This document summarizes an article from the International Journal of Electrical Engineering and Technology. The article discusses optimal placement of distributed generation (DG) in distribution systems using a multi-objective performance index. It studies DG placement on IEEE test feeders and a practical distribution system in India. It analyzes the impact of DG placement on transient stability, voltage, frequency and rotor angle during faults. It also examines coordination of overcurrent protection relays with and without DG, using directional and non-directional relays. The study aims to minimize power losses, improve voltage profiles and ensure reliable protection with high DG penetration.
OPTIMAL PLACEMENT AND SIZING OF CAPACITOR BANKS BASED ON VOLTAGE PROFILE AND ...Prashanta Sarkar
This document summarizes a thesis on optimally placing and sizing capacitor banks in a radial distribution system to improve voltage profile and reduce losses, and the effects of adding distributed generation. The study formulates an objective function to minimize losses and maximize voltages. Optimal capacitor placement is performed using genetic algorithms in ETAP software. Manual placement of capacitor banks is also evaluated. Adding distributed generation along with capacitors is found to further improve voltages and reduce losses compared to capacitors alone. The conclusion discusses benefits of compensation and future work on switching technologies and soft computing techniques for optimization.
Optimal Siting And Sizing Of Distributed Generation For Radial Distribution S...inventy
Research Inventy provides an outlet for research findings and reviews in areas of Engineering, Computer Science found to be relevant for national and international development, Research Inventy is an open access, peer reviewed international journal with a primary objective to provide research and applications related to Engineering. In its publications, to stimulate new research ideas and foster practical application from the research findings. The journal publishes original research of such high quality as to attract contributions from the relevant local and international communities.
PROTECTION OF MICROGRID FROM HIGH IMPEDANCE FAULT USING DIFFERENTIAL RELAYijiert bestjournal
As source of traditional energy is vanishes day by day,importance of microgrid increasing very effectively. In traditional generation and transmission of electrical power we have to rely on frequency and generation of power but in case of microgrid we have to depend on whether condition. Managing these systems to change of atmospheric condition becomes challenging . All study going on all over world related to microgrid protection of microgrid is one of them. Micro grids can either operate connected to the grid,or in the case of a grid fault,in an islanded mod e. Effect of high impedance fault is studied in this paper,by taking help of Matlab - Simulink�s SimPower Systems . We model a microgrid containing mix of renewable DG and one dispatch able source,we then simulate the HIF fault at one of the bus in both gri d - connect and island modes and analyze fault currents and voltage levels in order to determine how the protection scheme of the distribution network would need to be changed to facilitate microgrid functionality. We show that standard protection methods ar e insufficient and propose the use of digital relays which is different from traditional system.
This document summarizes recent developments in microgrid protection techniques. It discusses (1) a differential energy based protection scheme that uses time-frequency transforms to detect faults in grid-connected and island modes, (2) an autonomous protection method for low voltage DC microgrids using current sensors and circuit breakers to isolate faulty lines, and (3) an adaptive protection approach using communication between relays and a central protection unit to dynamically adjust settings based on distributed generator conditions and fault contributions. The challenges of microgrid protection include bidirectional power flow, topological changes, intermittent generation, insufficient fault currents, and potential nuisance tripping.
Analysis and Implementation of Power Quality Enhancement Techniques Using Cus...ijtsrd
Traditional power production has become challenging for utilities due to the depletion of fossil fuels, coal, and oil. This must be done in a less expensive and more efficient manner. To meet the consumers power needs, a new source is needed. The alternative source should be sustainable and capable of fulfilling the needs of the customer. The incorporation of renewable energy into the grid is a helpful method of meeting demand. The integration of renewable energy has three main challenges frequency fluctuation, power quality issues, and power system instability. The following issues were critical in nature. An expert system based on an analytic hierarchy method is used to detect and classify power quality issues. Previously, it could detect sag, swell, transients, harmonics, interruptions, and flickers. A method for categorizing events that is error free has been proposed. The streamlined process provides for more accurate identification and classification of power quality issues. an examination of power quality issues and their mitigation via the use of unified power quality conditioners UPQC To reduce different power quality problems, an Adaptive Neuro Fuzzy Inference System ANFIS is employed. Using renewable energy sources effectively reduces environmental impact. The proposed technique corrects voltage imbalances and reduces overall harmonic distortion at the point of common connection PCC . The installation of an ANFIS controlled DVR is utilized to minimize voltage fluctuations induced by the integration of renewable energy sources and transmission line failures. With the aim of using renewable energy, a fake fault was introduced to power quality events. The ANFIS controlled DVR plan is in place to mitigate the negative impacts of power quality events. ANFIS controlled DVR is compared to a conventional surveillance method. Nonlinear loads generate voltage flickers and total harmonic distortion, therefore a distributed static compensator D STATCOM is employed to avoid these. It is recommended that D STATCOM use three control methods instantaneous power theory, synchronous vector PI control, and harmonic elimination. The D efficacy of STATCOMs is tested under severe load conditions. Various control methods will be used to evaluate and debate the proposed expert system and customized power devices. Rahul Gokhle | Pramod Kumar Rathore "Analysis and Implementation of Power Quality Enhancement Techniques Using Custom Power Devices" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-6 , October 2021, URL: https://www.ijtsrd.com/papers/ijtsrd46380.pdf Paper URL : https://www.ijtsrd.com/engineering/electrical-engineering/46380/analysis-and-implementation-of-power-quality-enhancement-techniques-using-custom-power-devices/rahul-gokhle
This document discusses issues related to connecting renewable energy sources to the electric grid. It notes that renewable resources like wind and solar are intermittent and lack flexibility, posing challenges to balancing supply and demand. Various technical issues are explored, such as voltage fluctuations, frequency variation, power quality issues like harmonics. Solutions discussed include using inverters with voltage regulation modes, frequency ride-through systems, and distributing generation sources across three phases. The document advocates for grid-tied renewable systems and the development of new technologies to better integrate intermittent renewables at high penetration levels.
Challenges and Benefits of Integrating the Renewable Energy Technologies into...Power System Operation
In the recent decent, renewable energy has been becoming one of the independent energy sources in human life, and it will be a major resources for the future generation of power. Today, some people tend to use renewable energy in their home or land such as solar or wind energy. Most of those have two inputs of the power source; the utility power supply and renewable energy power supply, so the integration of renewable technologies variable generation sources within Ac grid has been made, but this connection is not easily reachable. This paper will be reviewed the challenges and benefits of integrating renewable energy into power system grid. A review of the integration process will be introduced. Also, the paper will discuss some difficulties that face the integration such as power quality requirements that must be achieved to get this connection successfully. Forecasting of renewable energy such availability of power at any time, the amount of variation in power output, the speed of variation, and the location of RE source are other challenges that may obstruct the successful incorporation of renewable energy and the grid. In addition, the paper will briefly show a device that can be used in homes to achieve this connection. Finally, advantages of the integration for both the power utility and the green energy owner will be present, and how this integration can affect our environment. Solar energy and wind energy will be used in this paper as examples of renewable energy. Keywords: grid, green energy, integration, global warming, renewable energy RE
An adaptive protection scheme to prevent recloser-fuse miscoordination in dis...iosrjce
IOSR Journal of Electrical and Electronics Engineering(IOSR-JEEE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of electrical and electronics engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electrical and electronics engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
OPTIMAL PLACEMENT AND SIZING OF CAPACITOR BANKS BASED ON VOLTAGE PROFILE AND ...Prashanta Sarkar
This document summarizes a thesis on optimally placing and sizing capacitor banks in a radial distribution system to improve voltage profile and reduce losses, and the effects of adding distributed generation. The study formulates an objective function to minimize losses and maximize voltages. Optimal capacitor placement is performed using genetic algorithms in ETAP software. Manual placement of capacitor banks is also evaluated. Adding distributed generation along with capacitors is found to further improve voltages and reduce losses compared to capacitors alone. The conclusion discusses benefits of compensation and future work on switching technologies and soft computing techniques for optimization.
Optimal Siting And Sizing Of Distributed Generation For Radial Distribution S...inventy
Research Inventy provides an outlet for research findings and reviews in areas of Engineering, Computer Science found to be relevant for national and international development, Research Inventy is an open access, peer reviewed international journal with a primary objective to provide research and applications related to Engineering. In its publications, to stimulate new research ideas and foster practical application from the research findings. The journal publishes original research of such high quality as to attract contributions from the relevant local and international communities.
PROTECTION OF MICROGRID FROM HIGH IMPEDANCE FAULT USING DIFFERENTIAL RELAYijiert bestjournal
As source of traditional energy is vanishes day by day,importance of microgrid increasing very effectively. In traditional generation and transmission of electrical power we have to rely on frequency and generation of power but in case of microgrid we have to depend on whether condition. Managing these systems to change of atmospheric condition becomes challenging . All study going on all over world related to microgrid protection of microgrid is one of them. Micro grids can either operate connected to the grid,or in the case of a grid fault,in an islanded mod e. Effect of high impedance fault is studied in this paper,by taking help of Matlab - Simulink�s SimPower Systems . We model a microgrid containing mix of renewable DG and one dispatch able source,we then simulate the HIF fault at one of the bus in both gri d - connect and island modes and analyze fault currents and voltage levels in order to determine how the protection scheme of the distribution network would need to be changed to facilitate microgrid functionality. We show that standard protection methods ar e insufficient and propose the use of digital relays which is different from traditional system.
This document summarizes recent developments in microgrid protection techniques. It discusses (1) a differential energy based protection scheme that uses time-frequency transforms to detect faults in grid-connected and island modes, (2) an autonomous protection method for low voltage DC microgrids using current sensors and circuit breakers to isolate faulty lines, and (3) an adaptive protection approach using communication between relays and a central protection unit to dynamically adjust settings based on distributed generator conditions and fault contributions. The challenges of microgrid protection include bidirectional power flow, topological changes, intermittent generation, insufficient fault currents, and potential nuisance tripping.
Analysis and Implementation of Power Quality Enhancement Techniques Using Cus...ijtsrd
Traditional power production has become challenging for utilities due to the depletion of fossil fuels, coal, and oil. This must be done in a less expensive and more efficient manner. To meet the consumers power needs, a new source is needed. The alternative source should be sustainable and capable of fulfilling the needs of the customer. The incorporation of renewable energy into the grid is a helpful method of meeting demand. The integration of renewable energy has three main challenges frequency fluctuation, power quality issues, and power system instability. The following issues were critical in nature. An expert system based on an analytic hierarchy method is used to detect and classify power quality issues. Previously, it could detect sag, swell, transients, harmonics, interruptions, and flickers. A method for categorizing events that is error free has been proposed. The streamlined process provides for more accurate identification and classification of power quality issues. an examination of power quality issues and their mitigation via the use of unified power quality conditioners UPQC To reduce different power quality problems, an Adaptive Neuro Fuzzy Inference System ANFIS is employed. Using renewable energy sources effectively reduces environmental impact. The proposed technique corrects voltage imbalances and reduces overall harmonic distortion at the point of common connection PCC . The installation of an ANFIS controlled DVR is utilized to minimize voltage fluctuations induced by the integration of renewable energy sources and transmission line failures. With the aim of using renewable energy, a fake fault was introduced to power quality events. The ANFIS controlled DVR plan is in place to mitigate the negative impacts of power quality events. ANFIS controlled DVR is compared to a conventional surveillance method. Nonlinear loads generate voltage flickers and total harmonic distortion, therefore a distributed static compensator D STATCOM is employed to avoid these. It is recommended that D STATCOM use three control methods instantaneous power theory, synchronous vector PI control, and harmonic elimination. The D efficacy of STATCOMs is tested under severe load conditions. Various control methods will be used to evaluate and debate the proposed expert system and customized power devices. Rahul Gokhle | Pramod Kumar Rathore "Analysis and Implementation of Power Quality Enhancement Techniques Using Custom Power Devices" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-6 , October 2021, URL: https://www.ijtsrd.com/papers/ijtsrd46380.pdf Paper URL : https://www.ijtsrd.com/engineering/electrical-engineering/46380/analysis-and-implementation-of-power-quality-enhancement-techniques-using-custom-power-devices/rahul-gokhle
This document discusses issues related to connecting renewable energy sources to the electric grid. It notes that renewable resources like wind and solar are intermittent and lack flexibility, posing challenges to balancing supply and demand. Various technical issues are explored, such as voltage fluctuations, frequency variation, power quality issues like harmonics. Solutions discussed include using inverters with voltage regulation modes, frequency ride-through systems, and distributing generation sources across three phases. The document advocates for grid-tied renewable systems and the development of new technologies to better integrate intermittent renewables at high penetration levels.
Challenges and Benefits of Integrating the Renewable Energy Technologies into...Power System Operation
In the recent decent, renewable energy has been becoming one of the independent energy sources in human life, and it will be a major resources for the future generation of power. Today, some people tend to use renewable energy in their home or land such as solar or wind energy. Most of those have two inputs of the power source; the utility power supply and renewable energy power supply, so the integration of renewable technologies variable generation sources within Ac grid has been made, but this connection is not easily reachable. This paper will be reviewed the challenges and benefits of integrating renewable energy into power system grid. A review of the integration process will be introduced. Also, the paper will discuss some difficulties that face the integration such as power quality requirements that must be achieved to get this connection successfully. Forecasting of renewable energy such availability of power at any time, the amount of variation in power output, the speed of variation, and the location of RE source are other challenges that may obstruct the successful incorporation of renewable energy and the grid. In addition, the paper will briefly show a device that can be used in homes to achieve this connection. Finally, advantages of the integration for both the power utility and the green energy owner will be present, and how this integration can affect our environment. Solar energy and wind energy will be used in this paper as examples of renewable energy. Keywords: grid, green energy, integration, global warming, renewable energy RE
An adaptive protection scheme to prevent recloser-fuse miscoordination in dis...iosrjce
IOSR Journal of Electrical and Electronics Engineering(IOSR-JEEE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of electrical and electronics engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electrical and electronics engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
This document analyzes the optimal positioning of superconducting fault current limiters (SFCLs) in smart grids. It simulates different fault scenarios in a model smart grid containing distributed generation from wind farms. It finds that installing an SFCL at the substation or distribution network increases fault current from wind farms. The best performance is achieved by installing a single SFCL at the point of integration between the wind farm and the grid. This location limits fault current from both the wind farm and the main power system effectively without negative impacts. The analysis suggests strategic placement of SFCLs at integration points is most efficient for protecting multiple distributed resources in smart grids.
This document discusses optimal placement of distributed generation in distribution networks. It introduces different types of distributed generation and outlines the advantages of distributed generation integration. It then discusses various approaches for optimally placing type 1 distributed generation, which can only inject real power, to minimize power losses and improve voltage profiles. Particle swarm optimization is applied to determine the optimal size and location of type 1 distributed generation in 33-bus and 69-bus test systems. The document also considers optimal placement of type 1 distributed generation and capacitors together in order to compensate for reactive power losses.
Reduction of mismatch and shading loss by use of distributed power electronicsIAEME Publication
This document summarizes a journal article that analyzes how distributed power electronics can reduce losses from mismatch and shading in photovoltaic (PV) systems. It discusses how micro-inverters and DC-DC converters at the individual panel level can independently track the maximum power point for each panel. This allows recovery of 10-30% of annual performance losses from mismatch and shading that normally occur in centralized inverter systems. The document outlines different converter topologies and analyzes their effectiveness in reducing losses under various shading conditions for residential and commercial PV installations.
As the rapid development of photovoltaic (PV) technology in recent years with the growth of electricity demand, integration of photovoltaic distributed generation (PVDG) to the distribution system is emerging to fulfil the demand. There are benefits and drawbacks to the distribution system due to the penetration of PVDG. This paper discussed and investigated the impacts of PVDG location and size on distribution power systems. The medium voltage distribution network is connected to the grid with the load being supplied by PVDG. Load flow and short circuit calculation are analyzed by using DigSILENT Power Factory Software. Comparisons have been made between the typical distribution system and the distribution system with the penetration of PVDG. Impacts in which PVDG location and size integrates with distribution system are investigated with the results given from the load flow and short circuit analysis. The results indicate positive impacts on the system interconnected with PVDG such as improving voltage profile, reducing power losses, releasing transmission and distribution grid capacity. It also shows that optimal locations and sizes of DGs are needed to minimize the system’s power losses. On the other hand, it shows that PVDG interconnection to the system can cause reverse power flow at improper DG size and location and increases short circuit level.
This document discusses solar power integration with the power grid in India. It provides background on solar power potential and capacity in India. The government has set targets to significantly increase solar capacity through the 12th five-year plan, with a total capacity addition of over 9 GW. Integrating this additional solar power presents challenges for grid operators due to the variable nature of solar power production. The document aims to analyze issues around grid integration of solar power in India and provide suggestions to overcome these challenges.
GRID INTERCONNECTION OF RENEWABLE ENERGY SOURCES AT DISTRIBUTION LEVEL WITH P...Pradeep Avanigadda
Renewable energy resources (RES) are being increasingly connected in distribution systems utilizing power electronic converters. This project presents a novel control strategy for achieving maximum benefits from these grid-interfacing inverters when installed in 3-phase 4-wire distribution systems. The inverter is controlled to perform as a multi-function device by incorporating active power filter functionality. The inverter can thus be utilized as: 1) power converter to inject power generated from RES to the grid, and 2) shunt APF to compensate current unbalance, load current harmonics, load reactive power demand and load neutral current. All of these functions may be accomplished either individually or simultaneously. With such a control, the combination of grid-interfacing inverter and the 3-phase 4-wire linear/non-linear unbalanced load at point of common coupling appears as balanced linear load to the grid. This new control concept is demonstrated with extensive MATLAB/ Simulink simulation studies and validated through digital signal processor-based laboratory experimental results.
The document discusses various challenges related to smart grids and microgrids. It covers topics like short-circuit current levels, false tripping, blindness of protection, prohibition of automatic reclosing, unsychronized reclosing, reach of impedance relays, bidirectional power flow, and protection challenges in AC microgrids. The types of microgrids are described as AC, DC, and hybrid microgrids. Changes brought about by the transition to smart grids and microgrids are also summarized.
The wi-fi energy transfer (WPT) is an emerging era with increasingly more ability packages to transfer energy from a transmitter to a cellular receiver over a noticeably huge air gap. but, its extensive utility is hampered due to the relatively low performance of modern wireless power switch (WPT) structures. This study gives an idea to maximize the performance in addition to to increase the quantity of extractable electricity of a WPT system operating in resonant operation. The proposed method is primarily based on actively modifying the equal secondary-side load impedance by controlling the section-shift of the active rectifier and its output voltage degree. The offered hardware prototype represents an entire wireless charging machine, consisting of a dc–dc converter that is used to price a battery at the output of the system. Experimental results are shown for the proposed concept in comparison to a traditional synchronous rectification approach. The supplied optimization technique sincerely outperforms trendy solutions in phrases of efficiency and extractable power.
Optimal Placement of Distributed Generation on Radial Distribution System for...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Class-20: These slides present the related standards and specifications for the smart grid. Details about each standards can be accessed from the reference book specified.
Grid Interconnection of Renewable Energy Sources at the Distribution Level Wi...Pradeep Avanigadda
Renewable energy resources (RES) are being increasingly
connected in distribution systems utilizing power electronic
converters. This paper presents a novel control strategy for
achieving maximum benefits from these grid-interfacing inverters
when installed in 3-phase 4-wire distribution systems. The inverter
is controlled to perform as a multi-function device by incorporating
active power filter functionality. The inverter can thus be
utilized as: 1) power converter to inject power generated from
RES to the grid, and 2) shunt APF to compensate current unbalance,
load current harmonics, load reactive power demand and
load neutral current. All of these functions may be accomplished
either individually or simultaneously. With such a control, the
combination of grid-interfacing inverter and the 3-phase 4-wire
linear/non-linear unbalanced load at point of common coupling
appears as balanced linear load to the grid. This new control
concept is demonstrated with extensive MATLAB/Simulink simulation
studies and validated through digital signal processor-based
laboratory experimental results.
Index Terms—Active power filter
A grid connected dual voltage source inverter with power quality improvement ...LeMeniz Infotech
A grid connected dual voltage source inverter with power quality improvement features
Do Your Projects With Technology Experts...
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
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Abstract-- Microgrids are miniature versions of traditional grids.
They comprise of distributed energy resources like wind turbine, Photovoltaic, Storage devices like batteries and renewable resources of power systems. They can operate in two modes, viz. Connected mode, where they are connected to the Main grid; and island mode, where they are isolated from Main grid. While microgrids offer advantages like improved reliability, stability,and efficiency; their implementation poses different technical challenges specifically for protection of microgrid. It is essential to protect a micro grid in both the grid-connected and the island mode of operation against all different types of faults. This paper gives literature review for different challenges and protection of techniques for microgrid protection.
- Motivated Electrical Engineer with 1 year of experience in power transmission planning, generator interconnection studies, and NERC compliance studies seeking a position in power systems engineering.
- Master's degree in Electrical Engineering with a focus on power systems and experience in software development.
- Skilled in transmission planning tools like PSSE and experience analyzing power flows, contingencies, and reliability standards.
1) The document discusses a novel control strategy for microgrids that allows operation in both grid-connected and islanding modes without reconfiguration. The proposed controller is based on the synchronverter concept which emulates synchronous generator behavior.
2) Key aspects of synchronverters are described, including emulated inertia, controlled frequency dynamics, and power-frequency droop control for power sharing in island mode.
3) The proposed control strategy involves angle, frequency, and power loops instead of conventional current and voltage loops. It directly controls power output by varying power angle and voltage amplitude.
Matlab Implementation of Power Quality Improvement Based on Fast Dynamic Controlijtsrd
This document summarizes a research paper on implementing power quality improvement using a fast dynamic control method in MATLAB. It proposes a transformer-less unified power quality conditioner (TL-UPQC) using four switching devices to form two half-bridge voltage-source inverters, one connected in parallel with the load and one in series with the AC mains sharing the same DC link. The paper presents simulation results in MATLAB showing the TL-UPQC can mitigate voltage sags/swells and current harmonics under nonlinear loads. It concludes the TL-UPQC provides improved power quality compared to other single-phase UPQC configurations.
Optimal placement of distributed power flow controller for loss reduction usi...eSAT Journals
Abstract
The aim of this paper is to reduce power loss and improve the voltage profiles in an electrical system in optimal manner. The flexible AC transmission system (FACTS) device such as Distributed power flow controller (DPFC) can strongly improve the different parameters in a power system. DPFC can be used to reduce line losses and increase voltage profiles. The optimized allocation of FACTS devices is an important issue, so the Voltage stability index (L-index) has been used in order to place UPFC in power system. The advantage of the L-index is to accelerate the optimization process. After placing the DPFC, Firefly optimization method is used for finding the rating of DPFC. The results obtained using Firefly optimization method is compared with Genetic Algorithm. To show the validity of the proposed techniques and for comparison purposes, simulation carried out on an IEEE- 14 Bus and IEEE- 30 Bus test system for different loading conditions.
Keywords: Distributed power flow controllers (DPFC), Optimized Placement, Voltage stability index (L-index), Firefly optimization method, Genetic algorithm.
Developmental attitude towards science among girls of secondaryIAEME Publication
This document summarizes a research study that examined the developmental attitudes of female students towards science subjects from secondary school to college level. The study administered a questionnaire to over 250 female students to investigate whether their interest levels and attitudes changed as they continued their studies. Key findings included that enjoyment of science increased, especially in chemistry, difficulty levels reduced, and interest was higher in mathematics than physics or chemistry. The study also found that attitudes towards experiments and handling apparatus improved with higher education. Overall, the study aimed to identify instructional strategies for improving girls' attitudes towards science.
Comparative analysis of multi stage cordic using micro rotation techniqueIAEME Publication
This document presents a comparative analysis of multi-stage CORDIC algorithms using a micro-rotation technique. It proposes a novel pipelined CORDIC architecture for efficient hardware implementation of trigonometric functions. The architecture reduces critical path delay by dividing the CORDIC rotations into multiple pipeline stages. It also suggests a generalized micro-rotation selection technique to reduce the number of iterations needed. Simulation results on a Xilinx FPGA show the proposed design has 51.9% lower slice-delay product and consumes 0.192 watts of power, demonstrating improved efficiency over other CORDIC implementations.
Utilization of bentonite silt mixtures as seepage barriers in liner systemsIAEME Publication
This document summarizes a study on using bentonite-silt mixtures as seepage barriers in landfill liner systems. Standard proctor tests were conducted on silt samples stabilized with 3-15% bentonite by weight. For both silts, maximum dry density increased and optimum moisture content decreased with higher bentonite content. Permeability tests found that permeability decreased significantly for both silts as bentonite content increased, reducing permeability by over 99% in some mixtures. The study demonstrates that bentonite addition can improve the compaction and decrease the permeability of silts for use as landfill liner materials.
This document analyzes the optimal positioning of superconducting fault current limiters (SFCLs) in smart grids. It simulates different fault scenarios in a model smart grid containing distributed generation from wind farms. It finds that installing an SFCL at the substation or distribution network increases fault current from wind farms. The best performance is achieved by installing a single SFCL at the point of integration between the wind farm and the grid. This location limits fault current from both the wind farm and the main power system effectively without negative impacts. The analysis suggests strategic placement of SFCLs at integration points is most efficient for protecting multiple distributed resources in smart grids.
This document discusses optimal placement of distributed generation in distribution networks. It introduces different types of distributed generation and outlines the advantages of distributed generation integration. It then discusses various approaches for optimally placing type 1 distributed generation, which can only inject real power, to minimize power losses and improve voltage profiles. Particle swarm optimization is applied to determine the optimal size and location of type 1 distributed generation in 33-bus and 69-bus test systems. The document also considers optimal placement of type 1 distributed generation and capacitors together in order to compensate for reactive power losses.
Reduction of mismatch and shading loss by use of distributed power electronicsIAEME Publication
This document summarizes a journal article that analyzes how distributed power electronics can reduce losses from mismatch and shading in photovoltaic (PV) systems. It discusses how micro-inverters and DC-DC converters at the individual panel level can independently track the maximum power point for each panel. This allows recovery of 10-30% of annual performance losses from mismatch and shading that normally occur in centralized inverter systems. The document outlines different converter topologies and analyzes their effectiveness in reducing losses under various shading conditions for residential and commercial PV installations.
As the rapid development of photovoltaic (PV) technology in recent years with the growth of electricity demand, integration of photovoltaic distributed generation (PVDG) to the distribution system is emerging to fulfil the demand. There are benefits and drawbacks to the distribution system due to the penetration of PVDG. This paper discussed and investigated the impacts of PVDG location and size on distribution power systems. The medium voltage distribution network is connected to the grid with the load being supplied by PVDG. Load flow and short circuit calculation are analyzed by using DigSILENT Power Factory Software. Comparisons have been made between the typical distribution system and the distribution system with the penetration of PVDG. Impacts in which PVDG location and size integrates with distribution system are investigated with the results given from the load flow and short circuit analysis. The results indicate positive impacts on the system interconnected with PVDG such as improving voltage profile, reducing power losses, releasing transmission and distribution grid capacity. It also shows that optimal locations and sizes of DGs are needed to minimize the system’s power losses. On the other hand, it shows that PVDG interconnection to the system can cause reverse power flow at improper DG size and location and increases short circuit level.
This document discusses solar power integration with the power grid in India. It provides background on solar power potential and capacity in India. The government has set targets to significantly increase solar capacity through the 12th five-year plan, with a total capacity addition of over 9 GW. Integrating this additional solar power presents challenges for grid operators due to the variable nature of solar power production. The document aims to analyze issues around grid integration of solar power in India and provide suggestions to overcome these challenges.
GRID INTERCONNECTION OF RENEWABLE ENERGY SOURCES AT DISTRIBUTION LEVEL WITH P...Pradeep Avanigadda
Renewable energy resources (RES) are being increasingly connected in distribution systems utilizing power electronic converters. This project presents a novel control strategy for achieving maximum benefits from these grid-interfacing inverters when installed in 3-phase 4-wire distribution systems. The inverter is controlled to perform as a multi-function device by incorporating active power filter functionality. The inverter can thus be utilized as: 1) power converter to inject power generated from RES to the grid, and 2) shunt APF to compensate current unbalance, load current harmonics, load reactive power demand and load neutral current. All of these functions may be accomplished either individually or simultaneously. With such a control, the combination of grid-interfacing inverter and the 3-phase 4-wire linear/non-linear unbalanced load at point of common coupling appears as balanced linear load to the grid. This new control concept is demonstrated with extensive MATLAB/ Simulink simulation studies and validated through digital signal processor-based laboratory experimental results.
The document discusses various challenges related to smart grids and microgrids. It covers topics like short-circuit current levels, false tripping, blindness of protection, prohibition of automatic reclosing, unsychronized reclosing, reach of impedance relays, bidirectional power flow, and protection challenges in AC microgrids. The types of microgrids are described as AC, DC, and hybrid microgrids. Changes brought about by the transition to smart grids and microgrids are also summarized.
The wi-fi energy transfer (WPT) is an emerging era with increasingly more ability packages to transfer energy from a transmitter to a cellular receiver over a noticeably huge air gap. but, its extensive utility is hampered due to the relatively low performance of modern wireless power switch (WPT) structures. This study gives an idea to maximize the performance in addition to to increase the quantity of extractable electricity of a WPT system operating in resonant operation. The proposed method is primarily based on actively modifying the equal secondary-side load impedance by controlling the section-shift of the active rectifier and its output voltage degree. The offered hardware prototype represents an entire wireless charging machine, consisting of a dc–dc converter that is used to price a battery at the output of the system. Experimental results are shown for the proposed concept in comparison to a traditional synchronous rectification approach. The supplied optimization technique sincerely outperforms trendy solutions in phrases of efficiency and extractable power.
Optimal Placement of Distributed Generation on Radial Distribution System for...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Class-20: These slides present the related standards and specifications for the smart grid. Details about each standards can be accessed from the reference book specified.
Grid Interconnection of Renewable Energy Sources at the Distribution Level Wi...Pradeep Avanigadda
Renewable energy resources (RES) are being increasingly
connected in distribution systems utilizing power electronic
converters. This paper presents a novel control strategy for
achieving maximum benefits from these grid-interfacing inverters
when installed in 3-phase 4-wire distribution systems. The inverter
is controlled to perform as a multi-function device by incorporating
active power filter functionality. The inverter can thus be
utilized as: 1) power converter to inject power generated from
RES to the grid, and 2) shunt APF to compensate current unbalance,
load current harmonics, load reactive power demand and
load neutral current. All of these functions may be accomplished
either individually or simultaneously. With such a control, the
combination of grid-interfacing inverter and the 3-phase 4-wire
linear/non-linear unbalanced load at point of common coupling
appears as balanced linear load to the grid. This new control
concept is demonstrated with extensive MATLAB/Simulink simulation
studies and validated through digital signal processor-based
laboratory experimental results.
Index Terms—Active power filter
A grid connected dual voltage source inverter with power quality improvement ...LeMeniz Infotech
A grid connected dual voltage source inverter with power quality improvement features
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Abstract-- Microgrids are miniature versions of traditional grids.
They comprise of distributed energy resources like wind turbine, Photovoltaic, Storage devices like batteries and renewable resources of power systems. They can operate in two modes, viz. Connected mode, where they are connected to the Main grid; and island mode, where they are isolated from Main grid. While microgrids offer advantages like improved reliability, stability,and efficiency; their implementation poses different technical challenges specifically for protection of microgrid. It is essential to protect a micro grid in both the grid-connected and the island mode of operation against all different types of faults. This paper gives literature review for different challenges and protection of techniques for microgrid protection.
- Motivated Electrical Engineer with 1 year of experience in power transmission planning, generator interconnection studies, and NERC compliance studies seeking a position in power systems engineering.
- Master's degree in Electrical Engineering with a focus on power systems and experience in software development.
- Skilled in transmission planning tools like PSSE and experience analyzing power flows, contingencies, and reliability standards.
1) The document discusses a novel control strategy for microgrids that allows operation in both grid-connected and islanding modes without reconfiguration. The proposed controller is based on the synchronverter concept which emulates synchronous generator behavior.
2) Key aspects of synchronverters are described, including emulated inertia, controlled frequency dynamics, and power-frequency droop control for power sharing in island mode.
3) The proposed control strategy involves angle, frequency, and power loops instead of conventional current and voltage loops. It directly controls power output by varying power angle and voltage amplitude.
Matlab Implementation of Power Quality Improvement Based on Fast Dynamic Controlijtsrd
This document summarizes a research paper on implementing power quality improvement using a fast dynamic control method in MATLAB. It proposes a transformer-less unified power quality conditioner (TL-UPQC) using four switching devices to form two half-bridge voltage-source inverters, one connected in parallel with the load and one in series with the AC mains sharing the same DC link. The paper presents simulation results in MATLAB showing the TL-UPQC can mitigate voltage sags/swells and current harmonics under nonlinear loads. It concludes the TL-UPQC provides improved power quality compared to other single-phase UPQC configurations.
Optimal placement of distributed power flow controller for loss reduction usi...eSAT Journals
Abstract
The aim of this paper is to reduce power loss and improve the voltage profiles in an electrical system in optimal manner. The flexible AC transmission system (FACTS) device such as Distributed power flow controller (DPFC) can strongly improve the different parameters in a power system. DPFC can be used to reduce line losses and increase voltage profiles. The optimized allocation of FACTS devices is an important issue, so the Voltage stability index (L-index) has been used in order to place UPFC in power system. The advantage of the L-index is to accelerate the optimization process. After placing the DPFC, Firefly optimization method is used for finding the rating of DPFC. The results obtained using Firefly optimization method is compared with Genetic Algorithm. To show the validity of the proposed techniques and for comparison purposes, simulation carried out on an IEEE- 14 Bus and IEEE- 30 Bus test system for different loading conditions.
Keywords: Distributed power flow controllers (DPFC), Optimized Placement, Voltage stability index (L-index), Firefly optimization method, Genetic algorithm.
Developmental attitude towards science among girls of secondaryIAEME Publication
This document summarizes a research study that examined the developmental attitudes of female students towards science subjects from secondary school to college level. The study administered a questionnaire to over 250 female students to investigate whether their interest levels and attitudes changed as they continued their studies. Key findings included that enjoyment of science increased, especially in chemistry, difficulty levels reduced, and interest was higher in mathematics than physics or chemistry. The study also found that attitudes towards experiments and handling apparatus improved with higher education. Overall, the study aimed to identify instructional strategies for improving girls' attitudes towards science.
Comparative analysis of multi stage cordic using micro rotation techniqueIAEME Publication
This document presents a comparative analysis of multi-stage CORDIC algorithms using a micro-rotation technique. It proposes a novel pipelined CORDIC architecture for efficient hardware implementation of trigonometric functions. The architecture reduces critical path delay by dividing the CORDIC rotations into multiple pipeline stages. It also suggests a generalized micro-rotation selection technique to reduce the number of iterations needed. Simulation results on a Xilinx FPGA show the proposed design has 51.9% lower slice-delay product and consumes 0.192 watts of power, demonstrating improved efficiency over other CORDIC implementations.
Utilization of bentonite silt mixtures as seepage barriers in liner systemsIAEME Publication
This document summarizes a study on using bentonite-silt mixtures as seepage barriers in landfill liner systems. Standard proctor tests were conducted on silt samples stabilized with 3-15% bentonite by weight. For both silts, maximum dry density increased and optimum moisture content decreased with higher bentonite content. Permeability tests found that permeability decreased significantly for both silts as bentonite content increased, reducing permeability by over 99% in some mixtures. The study demonstrates that bentonite addition can improve the compaction and decrease the permeability of silts for use as landfill liner materials.
Optimization of surface roughness in high speed end milling operation usingIAEME Publication
This document summarizes an investigation into optimizing surface roughness in high-speed end milling of Al-Si-Mg-Fe alloy workpieces using Taguchi's method. The study used an L9 orthogonal array to experiment with cutting speed, feed rate, and depth of cut. Surface roughness was measured and ANOVA was performed. Results showed depth of cut had the strongest influence on surface roughness, contributing over 73% of the variation, while cutting speed and feed rate also significantly impacted surface roughness. Surface roughness decreased with increasing cutting speed and increased with higher feed rates and depths of cut. Overall, Taguchi's method was able to optimize the machining parameters to minimize surface roughness.
Consumer behaviour a key influencer of rural market potentialIAEME Publication
The document discusses consumer behavior in rural markets in India. Some key points:
- Rural markets in India offer huge potential due to their large population size and rising incomes and consumption. Over 70% of Indians live in rural areas.
- Rural incomes and standards of living have been rising due to factors like increased agricultural output and jobs in nearby towns. Rural households are projected to grow faster than urban households.
- However, rural areas still face issues like illiteracy, poverty, and lack of infrastructure. Consumer behavior in rural areas is influenced more by community and opinion leaders than in urban areas.
- As rural incomes and aspirations continue rising, the rural market is becoming increasingly attractive to marketers. Understanding diverse rural consumer
Effect of the welding process parameter in mmaw for joining of dissimilar metalsIAEME Publication
This document discusses optimizing welding parameters for joining dissimilar metals using manual metal arc welding and an artificial neural fuzzy interface system. Experimental results were analyzed using regression analysis to develop mathematical models relating welding current, voltage, speed, and electrode angle to weld strength and metal deposition rate. An artificial neural network was trained on the experimental data and used to predict the optimal parameters to achieve the highest weld strength. Validation experiments showed the artificial neural fuzzy interface system successfully optimized the welding parameters.
Simulation and optimization of unloading point of a sugarcane industryIAEME Publication
This document summarizes a case study of optimizing the unloading time at a sugarcane industry in India. Data was collected on inter-arrival times of delivery trucks and service times. Probability distributions were fitted using Minitab, with Weibull for inter-arrivals and Normal for service times. A simulation model was built in Extend simulating the existing 3 unloading point system, which matched actual average wait times of 14.15 hours. The model was used to test adding more unloading points, finding average wait dropped to 2.21 hours with 5 points. An optimization approach using wait and service costs determined the optimum number of points.
A mathematical model for predicting autoclave expansion for portland cement 2IAEME Publication
This document discusses:
[1] A mathematical model was developed to predict autoclave expansion test results for Iraqi Portland cements based on a statistical analysis of 130 test results from four Iraqi cement factories over several months.
[2] The autoclave expansion test measures unsoundness in cement by exposing specimens to high pressure steam and monitoring expansion. Factors that influence the test results include free CaO, MgO, sulfate content, and cement fineness.
[3] The developed model had a high coefficient of determination (R2 = 0.97) and correlated well (r = 0.92) with new experimental data, indicating it can accurately predict autoclave expansion and help save time and resources
Analyzing numerically study the effect of add a spacer layer in gires tournoisIAEME Publication
This document analyzes numerically the effect of adding a spacer layer in Gires-Tournois interferometer design. It demonstrates three GTI structures with different spacer layers to study the impact on pulse width and reflectivity. The first design uses TiO2/SiO2 layers without a spacer and shows high reflectance but near-zero group delay dispersion. The second design adds a spacer layer, broadening the reflectance bandwidth but introducing non-linear group delay dispersion. The third design further increases the spacer layer, increasing reflectance and dispersion values but narrowing the bandwidth and worsening non-linearity. Adding a spacer layer can impact pulse width, reflectivity, bandwidth and dispersion non-linearity in GTI design.
Consideration of reactive energy in the tariff structureIAEME Publication
The document discusses considerations for including the cost of reactive energy in electricity tariffs. It proposes a framework to charge penalties to consumers that violate grid codes by drawing reactive power. The key points are:
1) Reactive power is important for grid stability but its value varies locally, so pricing should consider location.
2) A penalty tariff structure is proposed to charge consumers extra for reactive power drawn in violation of grid codes like unity power factor.
3) The cost of reactive energy would be estimated based on the existing tariff structure for active energy and demand charges, using the ratio of reactive demand to active demand costs. This allows distribution companies to recover costs for procuring reactive power.
Achieving sustainable competitive advantage through resource configurIAEME Publication
This document summarizes a research paper that aims to examine how organizational learning, knowledge management, and innovation can lead to sustainable competitive advantage through the mediating factors of resource configuration and organizational identity. The paper provides background on key concepts like sustainable competitive advantage, knowledge management, organizational learning, innovation, resource configuration, and organizational identity. It discusses how these strategic factors can help information technology companies achieve long-term competitive advantage. The paper presents a model and methodology to test these relationships and their effect on competitive advantage within the IT industry.
Performance and emission study of jatropha biodiesel and its blendsIAEME Publication
The document analyzes the performance and emissions of a compression ignition engine fueled with jatropha biodiesel blends. Physicochemical properties and performance parameters like brake thermal efficiency, brake specific fuel consumption, and emissions like exhaust temperature and smoke were tested for diesel (D100), and blends containing 10%, 20%, 30% jatropha biodiesel and 70%, 80%, 90% diesel. Test results showed brake thermal efficiency was higher for biodiesel blends at lower loads. Exhaust temperature was higher for blends but the blend with 5% hexane additive had the lowest temperature. Smoke emissions were slightly higher for blends than diesel at medium brake mean effective pressures.
The document announces a call for papers to be published in the July-August 2013 issue of journals from the International Association for Engineering and Management Education. The submission deadline is August 25th, 2013, with notification of acceptance within a week. Accepted papers will be published in print format on September 5th, 2013. The document provides information on submitting papers and the journal publication process.
El documento propone varias ideas para mejorar la experiencia del cliente en las estaciones Petrobras, incluyendo (1) crear una base de datos de clientes frecuentes para ofrecer un servicio más personalizado, (2) calcular la contaminación causada por cada compra de gasolina para contribuir a fondos ambientales, y (3) incluir áreas de juego para niños mientras los padres llenan el tanque.
El documento explica por qué el autor se siente tan cansado. Enumera varias razones por las que la población de un país no puede trabajar, incluyendo jubilados, estudiantes, empleados del gobierno, fuerzas armadas, personal estatal, personas en hospitales, jubilados por invalidez, presos, guerrilleros, indígenas y desempleados. Calcula que solo quedan el autor y el lector para hacer todo el trabajo del país.
El Open Build Service es un repositorio genérico para construir y distribuir paquetes desde código fuente, permitiendo a los usuarios compilar software desde el código fuente y distribuir los paquetes resultantes.
La justificación ha sido mal interpretada, aquí les presento una revelación profética de este acto solemne a través del cual nuestro Padre y Juez nos declara justos
This document presents an economic order quantity (EOQ) model that considers stock-dependent demand rate and variable time. The model aims to overcome limitations of prior models that treated parameters like α and β as constant. Five cases of the model are analyzed with different functional relationships between demand rate (r) and stock level (q), including: (1) log(q) relationship; (2) linear relationship; (3) inverse relationship; (4) quadratic relationship; and (5) inverse-linear relationship. For each case, the total cost function is derived and optimized to determine the optimal stock quantity level. The analysis shows how allowing parameters and time to vary provides a more accurate EOQ model for situations where demand depends
El documento habla sobre la autoestima. Define la autoestima como la valoración positiva o negativa que una persona tiene de sí misma, la cual se construye a través de las opiniones de figuras significativas. Explica que la autoestima se desarrolla principalmente en la infancia y adolescencia y depende del afecto y reconocimiento de los padres. También describe los componentes de una autoestima positiva y cómo los padres pueden fomentar una autoestima sana en los hijos a través del afecto, elogios realistas y ayudándolos
Application of crowbar protection on dfig based wind turbine connected to grid-2IAEME Publication
This document summarizes a research paper about providing voltage stability support for doubly fed induction generator (DFIG) wind turbines connected to weak power grids. It introduces DFIG technology and describes the modeling and control of the DFIG, including its rotor side converter control strategy. It then analyzes the short circuit current contribution of DFIG wind turbines during faults using crowbar and DC chopper protection. The objectives are to analyze fault current, investigate voltage profiles during subtransmission and medium voltage faults, and develop methods to improve voltage support from wind farms during grid disturbances.
A new simplified approach for optimum allocation of a distributed generationIAEME Publication
The document describes a new methodology for optimal placement and sizing of distributed generation (DG) units in distribution networks. It involves:
1) Calculating the Tail End Nodes Voltage Deviation Index (TENVDI) by placing DG at each node to determine the optimal location with the minimum TENVDI.
2) Determining the optimal size of DG placed at the optimal location by varying the DG size and finding the size that results in minimum complex power losses.
3) The methodology is tested on IEEE 33-bus and 69-bus test systems in MATLAB. The results show reductions in losses and improvements in voltage profiles with optimal DG placement and sizing.
This document discusses an adaptive protection scheme to prevent recloser-fuse miscoordination in distribution feeders with distributed generation. The presence of distributed generation can interfere with the coordination between reclosers and fuses by changing fault current levels. The proposed method adaptively modifies recloser time dial settings to address this issue. The method is tested on a simulation of an actual distribution feeder assuming different distributed generation capacities and locations. Optimization is also performed to determine the optimal location and capacity of two distributed generation units while maintaining recloser-fuse coordination and minimizing losses.
A transient current based micro grid connected power system protection scheme...IJECEIAES
Micro-grids comprise Distributed Energy Resources (DER’s) with low voltage distribution networks having controllable loads those can operate with different voltage levels are connected to the micro-grid and operated in grid mode or islanding mode in a coordinated way of control. DER’s provides clear environment-economical benefits for society and consumer utilities. But their development poses great technical challenges mainly protection of main and micro grid. Protection scheme must have to respond to both the main grid and micro-grid faults. If the fault is occurs on main grid, the response must isolate the DER’s from the main grid rapidly to protect the system loads. If the fault ocuurs within the micro-grid, the protection scheme must coordinate and isolates the least priority possible part of the grid to eliminate the fault. In order to deal with the bidirectional energy flow due to large numbers of micro sources new protection schemes are required. The system is simulated using MATLAB Wavelet Tool box and Wavelet based Multi-resolution Analysis is considered. Wavelet based Multi-resolution Analysis is used for detection, discrimination and location of faults on transmission network. This paper is discussed a transient current based micro-grid connected power system protection scheme using Wavelet Approach described on wavelet detailed-coefficients of Mother Biorthogonal 1.5 wavelet. The proposed algorithm is tested in micro-grid connected power systems environment and proved for the detection, discrimination and location of faults which is almost independent of fault impedance, fault inception angle (FIA) and fault distance of feeder line.
Detection of Power Grid Synchronization Failure on Sensing Frequency and Volt...IRJET Journal
This document presents a system to detect power grid synchronization failures by sensing abnormalities in frequency and voltage. The system uses an Arduino microcontroller to monitor voltage and frequency from sensors. If the values go outside acceptable limits, it triggers a relay to disconnect the load and sends alerts by GSM and GPS. The system aims to prevent blackouts by detecting issues early and allowing time for response. It was tested using loads like lamps and successfully detected and responded to over/under voltage and frequency changes by displaying warnings on an LCD. This provides automatic grid protection while synchronizing multiple generation sources in parallel.
IRJET- Analysis of Demand Side Management of Distribution SystemsIRJET Journal
This document analyzes demand side management techniques in distribution systems using an IEEE 33 bus test system in DigSILent PowerFactory software. It implements different demand side management approaches like incorporating distributed energy sources, load shifting, and valley filling. The distributed energy sources used are distributed generators and batteries. Load shifting is done by shifting different percentages of load to off-peak hours. Valley filling is analyzed for different cases. The results of these demand side management techniques are compared to the base IEEE 33 bus system in terms of improvements to voltage profile and losses. The effectiveness of each technique is evaluated based on the losses.
This document proposes a novel three-level neutral-point-clamped (NPC) inverter for grid-tied photovoltaic applications. The proposed inverter can effectively balance the operation of two independent DC sources by solving unbalanced conditions caused by unequal irradiation and temperatures. Compared to traditional two-stage inverters, the proposed NPC inverter reduces voltage requirements, lowers DC-link capacitor ratings, and improves efficiency. It also introduces a new NPC inverter topology called N-3L-SNPC that uses hybrid IGBT-MOSFET modules along with a novel PWM strategy for complete inactive body diode control, lower switching losses, higher switching frequency, and reduced output filtering needs.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This paper reviews technologies for enhancing the low voltage ride through (LVRT) capability of wind farms using induction generators. It analyzes how FACTS controllers like STATCOMs or MERs can improve LVRT capability compared to thyristor controlled static var compensators (SVCs). It proposes using transient stability margin as an indicator of LVRT capability and describes a torque slip characteristic approach for estimating the rating of compensation devices needed to ensure stability after a fault. The paper also discusses different wind generator types, LVRT technologies like active crowbars and energy storage, and the role of grid codes in technical requirements for connecting wind farms to the grid.
This paper reviews technologies for enhancing the low voltage ride through (LVRT) capability of wind farms using induction generators. It analyzes how FACTS controllers like STATCOMs or MERs can improve LVRT capability compared to thyristor controlled static var compensators (SVCs). It proposes using transient stability margin as an indicator of LVRT capability and describes a torque slip characteristic approach for estimating the rating of compensation devices needed to ensure stability after a fault. The paper also discusses different wind generator types, LVRT technologies like active crowbars and energy storage, and the role of grid codes in technical requirements for connecting wind farms to the grid.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Investigation of the challenges in establishing plug and play low voltage dc ...PromiseBeshel
A research proposal to improve the stability, efficiency, and reliability problems of low voltage DC microgrids from a communication control strategy point of view.
Distributed generation (DG) provides benefits but also poses technical challenges for grid interconnection. A major issue is islanding, where a DG system continues operating isolated from the main grid, risking safety. Detection of islanding is important but challenging as various passive and active techniques have limitations. The document discusses islanding detection methods in detail and their limitations, as well as other technical issues like power quality, protection coordination, and stability impacts of high DG penetration. Commercial and regulatory interconnection challenges are also outlined. In conclusion, while DG benefits the grid, resolving technical and commercial issues is necessary to successfully integrate DG at large scale.
A Comprehensive Review of Protection Schemes for Distributed GenerationUmair Shahzad
Due to the increasing demand of energy and the need for nonconventional energy sources, distributed generation (DG) has come into play. The trend of unidirectional power flow has been gradually shifting. With new technology comes new challenges, the introduction of DG into the conventional power system brings various challenges; one of the major challenges is system protection under DG sources. These sources pose a significant challenge due to bidirectional flows from DGs as well as lower fault current contribution from inverter interfaced DGs. This paper reviews existing protection schemes that have been suggested for active distribution networks. Most of these protection strategies apply only to smaller distribution systems implying that they may need to be extended to larger systems with a much higher penetration of distributed generation. In the end, a potential protection scheme has also been recommended as a future work.
This document summarizes the key findings of a study on the impact of integrating AC microgrids with distributed generators (DGs) into the main grid. The study models and simulates radial and meshed microgrid configurations connected to the main grid. It finds that DGs improve voltage profiles by supplying power locally and reduce active and reactive power losses. Fault analysis shows short circuit currents increase with DGs due to reduced system impedance, though voltages are improved. In conclusion, microgrids can meet future electricity needs by generating and consuming power locally while minimizing losses on the main grid.
This document summarizes techniques for providing low voltage ride through (LVRT) capability for doubly fed induction generator (DFIG) wind turbine systems. It discusses three main techniques:
1) Active crowbar protection disconnects the rotor side converter during faults to protect it, turning the generator into a squirrel cage induction machine. This allows the DFIG to stay connected but draws a large reactive power.
2) Flexible AC transmission systems (FACTS) devices like STATCOM and dynamic voltage restorer (DVR) can provide external protection by injecting compensating voltages. Using a DVR avoids the need for internal DFIG protection methods.
3) Stator current feedback is investigated as another technique for
This document discusses selecting the optimal location and size of multiple distributed generations using the Kalman filter algorithm. It first provides background on distributed generation technologies and their benefits, such as reducing power losses, improving voltage stability and reliability. The objectives of distributed generation include meeting increasing power demand in a cost-effective way and integrating renewable sources. The document then describes modeling distributed generations using the Kalman filter and determining their optimal locations and sizes to minimize power losses and maximize system stability and reliability.
IRJET- ARC Fault and Flash Signal Analysis in DC Distribution SystemsIRJET Journal
This document discusses arc fault analysis in DC distribution systems. It proposes a new approach using wavelet transform-based spectral energy analysis to detect arc faults. Simulation and experimental results from a PV array are presented to validate the approach. Key aspects of the proposed method include using the wavelet transform to decompose PV output voltage signals and identify features indicating an arc fault. The Cassie arc model is also discussed to mathematically represent arc characteristics.
IRJET- ARC Fault and Flash Signal Analysis in DC Distribution SystemsIRJET Journal
This document presents a new approach for arc fault analysis in DC distribution systems using wavelet transform-based spectral energy calibration. It involves modeling DC arcs using the Cassie arc model and analyzing the arc voltage signatures. The arc voltage signals are decomposed using wavelet multiresolution analysis to extract detail and approximation signals. Spectral energy values are then calculated from these signals for arc fault classification and identification of the fault location. MATLAB simulations are performed to validate the proposed methodology. The results show increases in the arc voltage magnitude and higher frequency components in the wavelet decomposed signals when arcs occur, allowing identification of normal and fault conditions.
Dealing With Reactive Power in Islanded Micro Grid Corresponding Power Distri...ijtsrd
A Micro grid MG is a local energy system consisting of a number of energy sources e.g., wind turbine or solar panels among others , energy storage units, and loads that operate connected to the main electrical grid or autonomously. MGs provide flexibility, reduce the main electricity grid dependence, and contribute to changing large centralized production paradigm to local and distributed generation. However, such energy systems require complex management, advanced control, and optimization. Moreover, the power electronics converters have to be used to correct energy conversion and be interconnected through a common control structure is necessary. A classical droop control system is often implemented in MG. It allows correct operation of parallel voltage sourced converters in grid connection, as well as islanded mode of operation. However, it requires complex power management algorithms, especially in islanded MGs, which balance the system and improves reliability. The novel reactive power sharing algorithm is developed, which takes into account the parameters of the converter as apparent power limit and maximum active power. The developed solution is verified in simulation and compared with other known reactive power control methods. G. Amulya | Dr. S. V. D. Anil Kumar "Dealing With Reactive Power in Islanded Micro Grid-Corresponding Power Distribution in Hierarchical Droop Control using Photovoltaic System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd26498.pdfPaper URL: https://www.ijtsrd.com/engineering/electrical-engineering/26498/dealing-with-reactive-power-in-islanded-micro-grid-corresponding-power-distribution-in-hierarchical-droop-control-using-photovoltaic-system/g-amulya
Similar to Optimal dg placement using multiobjective index and its effect on stability 2 (20)
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfMalak Abu Hammad
Discover how MongoDB Atlas and vector search technology can revolutionize your application's search capabilities. This comprehensive presentation covers:
* What is Vector Search?
* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
Perfect for developers, AI enthusiasts, and tech leaders. Learn how to leverage MongoDB Atlas to deliver highly relevant, context-aware search results, transforming your data retrieval process. Stay ahead in tech innovation and maximize the potential of your applications.
#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
20 Comprehensive Checklist of Designing and Developing a WebsitePixlogix Infotech
Dive into the world of Website Designing and Developing with Pixlogix! Looking to create a stunning online presence? Look no further! Our comprehensive checklist covers everything you need to know to craft a website that stands out. From user-friendly design to seamless functionality, we've got you covered. Don't miss out on this invaluable resource! Check out our checklist now at Pixlogix and start your journey towards a captivating online presence today.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
Introducing Milvus Lite: Easy-to-Install, Easy-to-Use vector database for you...Zilliz
Join us to introduce Milvus Lite, a vector database that can run on notebooks and laptops, share the same API with Milvus, and integrate with every popular GenAI framework. This webinar is perfect for developers seeking easy-to-use, well-integrated vector databases for their GenAI apps.
UiPath Test Automation using UiPath Test Suite series, part 6DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
Full-RAG: A modern architecture for hyper-personalizationZilliz
Mike Del Balso, CEO & Co-Founder at Tecton, presents "Full RAG," a novel approach to AI recommendation systems, aiming to push beyond the limitations of traditional models through a deep integration of contextual insights and real-time data, leveraging the Retrieval-Augmented Generation architecture. This talk will outline Full RAG's potential to significantly enhance personalization, address engineering challenges such as data management and model training, and introduce data enrichment with reranking as a key solution. Attendees will gain crucial insights into the importance of hyperpersonalization in AI, the capabilities of Full RAG for advanced personalization, and strategies for managing complex data integrations for deploying cutting-edge AI solutions.
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!