The paper describes the design of D-STATCOM in single phase for voltage interruption mitigation of fault in an unbalance system. Speed of response is higher than static var compensator (SVC) and harmonic emission is less than SVC that is why D-STATCOM is used in place of static var compensator. It validates the performance of D-STATCOM for improving power quality and harmonics. It provides a guide for utilities to have an appropriate choice of FACTS devices for enhancing stability. The work proposes a two pulse STATCOM configurations in which voltage source inverter uses IGBT as a switching device have been simulated using MATLAB/SIMULINK. Accordingly, simulation is first carried out to illustrate use of D-STATCOM in mitigating voltage interruption in single phase. The scope of the paper is to explore the D-STATCOM in single phase. Normally, D-STATCOM is not used in single phase, so an attempt has been made to introduce DSTATCOM in single phase load or household applications. Simulation results of 3KVAR D-STATCOM validate that integrated D-STATCOM with 230V, 91μF capacitor is suited for single phase system with voltage interruption mitigation capacit
Application of Capacitors to Distribution System and Voltage RegulationAmeen San
Application of Capacitors to
Distribution System and Voltage
Regulation
POWER FACTOR IMPROVEMENT,
System Harmonics
Voltage Regulation
Methods of Voltage Control
LOW CAPACITANCE CASCADED H BRIDGE MULTILEVEL BASED STATCOMASWATHYSANAND1
This project aims at a new low capacitance cascade H-Bridge multilevel inverter based StatCom. This system is able to operate with extremely low dc capacitance values.
International Journal of Engineering Inventions (IJEI) provides a multidisciplinary passage for researchers, managers, professionals, practitioners and students around the globe to publish high quality, peer-reviewed articles on all theoretical and empirical aspects of Engineering and Science.
APPLICATION OF STATCOM to IMPROVED DYNAMIC PERFORMANCE OF POWER SYSTEMijsrd.com
Application of FACTS controller called Static Synchronous Compensator STATCOM to improve the performance of power grid with Wind Farms is investigated .The essential feature of the STATCOM is that it has the ability to absorb or inject fastly the reactive power with power grid . Therefore the voltage regulation of the power grid with STATCOM FACTS device is achieved. Moreover restoring the stability of the power system having wind farm after occurring severe disturbance such as faults or wind farm mechanical power variation is obtained with STATCOM controller . The dynamic model of the power system having wind farm controlled by proposed STATCOM is developed . To validate the powerful of the STATCOM FACTS controller, the studied power system is simulated and subjected to different severe disturbances. The results prove the effectiveness of the proposed STATCOM controller in terms of fast damping the power system oscillations and restoring the power system stability.
Application of Capacitors to Distribution System and Voltage RegulationAmeen San
Application of Capacitors to
Distribution System and Voltage
Regulation
POWER FACTOR IMPROVEMENT,
System Harmonics
Voltage Regulation
Methods of Voltage Control
LOW CAPACITANCE CASCADED H BRIDGE MULTILEVEL BASED STATCOMASWATHYSANAND1
This project aims at a new low capacitance cascade H-Bridge multilevel inverter based StatCom. This system is able to operate with extremely low dc capacitance values.
International Journal of Engineering Inventions (IJEI) provides a multidisciplinary passage for researchers, managers, professionals, practitioners and students around the globe to publish high quality, peer-reviewed articles on all theoretical and empirical aspects of Engineering and Science.
APPLICATION OF STATCOM to IMPROVED DYNAMIC PERFORMANCE OF POWER SYSTEMijsrd.com
Application of FACTS controller called Static Synchronous Compensator STATCOM to improve the performance of power grid with Wind Farms is investigated .The essential feature of the STATCOM is that it has the ability to absorb or inject fastly the reactive power with power grid . Therefore the voltage regulation of the power grid with STATCOM FACTS device is achieved. Moreover restoring the stability of the power system having wind farm after occurring severe disturbance such as faults or wind farm mechanical power variation is obtained with STATCOM controller . The dynamic model of the power system having wind farm controlled by proposed STATCOM is developed . To validate the powerful of the STATCOM FACTS controller, the studied power system is simulated and subjected to different severe disturbances. The results prove the effectiveness of the proposed STATCOM controller in terms of fast damping the power system oscillations and restoring the power system stability.
STATCOM for Improved Dynamic Performance of Wind Farms in Power Grid IJMER
Application of FACTS controller called Static Synchronous Compensator STATCOM to
improve the performance of power grid with Wind Farms is investigated .The essential feature of the
STATCOM is that it has the ability to absorb or inject the reactive power with power grid. Therefore,
the voltage regulation of the power grid with STATCOM FACTS device is achieved. Moreover restoring
the stability of the power system having wind farm after occurring severe disturbance such as faults or
wind farm mechanical power variation is obtained with STATCOM controller. The dynamic model of
the power system having wind farm controlled by proposed STATCOM is developed. To validate the
powerful of the STATCOM FACTS controller, the studied power system is simulated and subjected to
different severe disturbances. The results prove the effectiveness of the proposed STATCOM controller
in terms of fast damping the power system oscillations and restoring the power system stability.
Control of Active And reactive power flow in transmission line and power Osci...AM Publications
the continuous demand in electric power system network has caused the system to be heavily loaded
leading to voltage instability. This paper describe the active approach to series line compensation, in which static
voltage sourced converter, is used to provide controllable series compensation. This compensator is called as Static
synchronous series compensator (SSSC). It injects the compensating voltage in phase quadrature with line current, it
can emulate as inductive or capacitive reactance so as to influence the power flow in the line. With DC power supply it
can also compensate the voltage drop across the resistive component of the line impedance. In addition, the series
reactive compensation can greatly increase the power oscillation damping.
Simulations have been done in MATLAB SIMULINK. Simulation results obtained for selected bus-2 in two machine
power system. From the result we can investigate the effect of this device in controlling active and reactive power as
well as damping power system oscillations in transient mode.
1.compensation of reactive power using d statcom in grid interfaced pv systemEditorJST
This paper displays the upgrade of voltage droops, Harmonic mutilation and low power figure utilizing Distribution Static Compensator (D-STATCOM) with LCL Passive Filter in Distribution Framework. At whatever point there is an entrance of photovoltaic cell energy to the low voltage appropriated matrix, there happen the issue of confuse in voltage and recurrence in the system, maybe brought on by non-direct loads, creating music. The model depends on the Voltage Source Converter (VSC) guideline. The D-STATCOM infuses a current into the framework to alleviate the voltage lists. LCL Passive Filter Was then added to D-STATCOM to enhance symphonies bending and low power figure. The reproductions were performed utilizing MATLAB SIMULINK.
SOLID STATE TRANSFORMER - USING FLYBACK CONVERTERAbhin Mohan
FUTURISTIC ELECTRICAL ENGINEERING PROJECT.
A Device that can step up as well as step down coltage and get output as both DC or AC. Total flexibility of Power using DC link by Flyback Coverter.
Ieee 2015 2014 power electronics project titlespowerprojects
We offer IEEE 2014 power electronics projects, IEEE 2015 power electronics projects for B.E, M.E, B.Tech, M.Tech final year students in engineering colleges. We provide all project support with project training.
STATCOM for Improved Dynamic Performance of Wind Farms in Power Grid IJMER
Application of FACTS controller called Static Synchronous Compensator STATCOM to
improve the performance of power grid with Wind Farms is investigated .The essential feature of the
STATCOM is that it has the ability to absorb or inject the reactive power with power grid. Therefore,
the voltage regulation of the power grid with STATCOM FACTS device is achieved. Moreover restoring
the stability of the power system having wind farm after occurring severe disturbance such as faults or
wind farm mechanical power variation is obtained with STATCOM controller. The dynamic model of
the power system having wind farm controlled by proposed STATCOM is developed. To validate the
powerful of the STATCOM FACTS controller, the studied power system is simulated and subjected to
different severe disturbances. The results prove the effectiveness of the proposed STATCOM controller
in terms of fast damping the power system oscillations and restoring the power system stability.
Control of Active And reactive power flow in transmission line and power Osci...AM Publications
the continuous demand in electric power system network has caused the system to be heavily loaded
leading to voltage instability. This paper describe the active approach to series line compensation, in which static
voltage sourced converter, is used to provide controllable series compensation. This compensator is called as Static
synchronous series compensator (SSSC). It injects the compensating voltage in phase quadrature with line current, it
can emulate as inductive or capacitive reactance so as to influence the power flow in the line. With DC power supply it
can also compensate the voltage drop across the resistive component of the line impedance. In addition, the series
reactive compensation can greatly increase the power oscillation damping.
Simulations have been done in MATLAB SIMULINK. Simulation results obtained for selected bus-2 in two machine
power system. From the result we can investigate the effect of this device in controlling active and reactive power as
well as damping power system oscillations in transient mode.
1.compensation of reactive power using d statcom in grid interfaced pv systemEditorJST
This paper displays the upgrade of voltage droops, Harmonic mutilation and low power figure utilizing Distribution Static Compensator (D-STATCOM) with LCL Passive Filter in Distribution Framework. At whatever point there is an entrance of photovoltaic cell energy to the low voltage appropriated matrix, there happen the issue of confuse in voltage and recurrence in the system, maybe brought on by non-direct loads, creating music. The model depends on the Voltage Source Converter (VSC) guideline. The D-STATCOM infuses a current into the framework to alleviate the voltage lists. LCL Passive Filter Was then added to D-STATCOM to enhance symphonies bending and low power figure. The reproductions were performed utilizing MATLAB SIMULINK.
SOLID STATE TRANSFORMER - USING FLYBACK CONVERTERAbhin Mohan
FUTURISTIC ELECTRICAL ENGINEERING PROJECT.
A Device that can step up as well as step down coltage and get output as both DC or AC. Total flexibility of Power using DC link by Flyback Coverter.
Ieee 2015 2014 power electronics project titlespowerprojects
We offer IEEE 2014 power electronics projects, IEEE 2015 power electronics projects for B.E, M.E, B.Tech, M.Tech final year students in engineering colleges. We provide all project support with project training.
International Journal of Engineering Research and Development is an international premier peer reviewed open access engineering and technology journal promoting the discovery, innovation, advancement and dissemination of basic and transitional knowledge in engineering, technology and related disciplines.
We follow "Rigorous Publication" model - means that all articles appear on IJERD after full appraisal, effectiveness, legitimacy and reliability of research content. International Journal of Engineering Research and Development publishes papers online as well as provide hard copy of Journal to authors after publication of paper. It is intended to serve as a forum for researchers, practitioners and developers to exchange ideas and results for the advancement of Engineering & Technology.
International Journal of Engineering Research and Development is an international premier peer reviewed open access engineering and technology journal promoting the discovery, innovation, advancement and dissemination of basic and transitional knowledge in engineering, technology and related disciplines.
We follow "Rigorous Publication" model - means that all articles appear on IJERD after full appraisal, effectiveness, legitimacy and reliability of research content. International Journal of Engineering Research and Development publishes papers online as well as provide hard copy of Journal to authors after publication of paper. It is intended to serve as a forum for researchers, practitioners and developers to exchange ideas and results for the advancement of Engineering & Technology.
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.
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.
REDUCING SOURCE CURRENT HARMONICS DUE TO BALANCED AND UN-BALANCED VOLTAGE VAR...IJCI JOURNAL
Electricity demand has been increasing due to the increase of population and industries. Hence it is very
important to feed the demand with quality of generation. Improvement of power quality is the greater
concern in advanced power system element, it is essential to congregate the need of energy by employ the
renewable energy generating sources like pv, fuel cell, biomass, wind, etc and utilizing many more
applications like grid interconnected systems, power quality improvement. The situations like harmonic,
reactive power exchanging, power factor correction, balanced and un-balanced voltage variations & so on,
due to greater effect on highly susceptible loads are to be encouraged in power distribution system. To
enhance these circumstances, custom power appliances are used to achieve high grid voltage stability. In
this paper, a voltage distortions controlled D-STATCOM based on fuzzy controller is a meticulous power
appliance for enhancing harmonic distortions from high power semiconductor switching device,
exchanging the both active & reactive power, defend the gird stability by implementing DG technology, to
regulate the power quality issues in power distribution network. This paper implements the comparative
analysis of PI and Fuzzy controlled DSTATCOM with energy backup scheme, controlled by pwm control
technique and founded that fuzzy based IPQ theory for generation of reference current signals improves the
power quality than PI based IPQ theory and this analysis is dynamically evaluated with Matlab/Simulink.
Voltage Sag Mitigation in Utility Connected System Using Current Source Conve...IDES Editor
This paper discusses the implementation of current
source converter based distribution type static synchronous
compensator. For eliminating the lower order harmonics, the
power semiconductors are switched by pulse width modulation
technique. Current source converter, input filter, dc link
reactor are combined to design the proposed CSC based
STATCOM. Since the STATCOM is a current injection
device, the performance of the device is improved by a currentsource
converter (CSC) combination. So a controllable current
is generated at the output terminals of the device. Filter circuit
at the input terminal is designed to eliminate the higher order
harmonics. The proposed D- STATCOM is simulated and the
results are validated using MATLAB.
Improved Power Quality by using STATCOM Under Various Loading ConditionsIJMTST Journal
A Power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that
results in a failure or a mis-operation of end user equipment’s. Utility distribution networks, sensitive
industrial loads and critical commercial operations suffer from various types of outages and service
interruptions which can cost significant financial losses. With the restructuring of power systems and with
shifting trend towards distributed and dispersed generation, the issue of power quality is going to take
newer dimensions. Injection of the wind power into an electric grid affects the power quality. The
performance of the wind turbine and thereby power quality are determined on the basis of measurements
and the norms followed according to the guideline specified in International Electro-technical Commission
standard, IEC-61400. The influence of the wind turbine in the grid system concerning the power quality
measurements are-the active power, reactive power, variation of voltage, flicker, harmonics, and electrical
behavior of switching operation and these are measured according to national/international guidelines.
Static Compensator (STATCOM) is connected at a point of common coupling with a battery energy storage
system (BESS) to mitigate the power quality issues. The battery energy storage is integrated to sustain the
real power source under fluctuating wind power. Here two control schemes for STATCOM are Fuzzy logic
controller and hybrid Fuzzy logic controller. We can better response for hybrid fuzzy compare to fuzzy logic
controller. The STATCOM control scheme for the grid connected wind energy generation system for power
quality improvement is simulated using MATLAB/SIMULINK in power system block set. Finally the proposed
scheme is applied for both balanced and unbalanced linear nonlinear loads.
Power Quality Improvement Using Cascaded H-Bridge Multilevel Inverter Based D...IJERA Editor
Cascaded multilevel configuration of the inverter has the advantage of its simplicity and modularity over the
configurations of the diode-clamped and flying capacitor multilevel inverters. This paper presents a threephase,
five-level and seven level cascaded multilevel voltage source inverter based active filter for power line
conditioning to improve power quality in the distribution network. The DSTATCOM helps to improve the
power factor and eliminate the Total Harmonics Distortion (THD) drawn from a Non-Liner Diode Rectifier
Load (NLDRL). The compensation process is based on concept of p-q theory. A CHB Inverter is considered for
shunt compensation of a 11 kV distribution system. Finally a level shifted PWM (LSPWM) and phase shifted
PWM (PSPWM) techniques are adopted to investigate the performance of CHB Inverter. The results are
obtained through Matlab/Simulink software package.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Shunt Compensation for Power Quality Improvement using a STATCOM ControllerIDES Editor
This paper addresses the issue of the modeling
and analysis of STATCOM controller. The transient
analysis and modeling is performed with the state-of-theart
digital simulator PSCAD 4.2.1. Simulation were
carried out for both cases where, STATCOM was
connected into the system and not, with simulation
interval 3-5 sec. The aim of the STATCOM is to provide
good power quality at the point of common coupling
(PCC). Some simulation results are presented, which
shows the compensation effectiveness of the STATCOM
controller at the connected bus.
Power quality improvement based on hybrid coordinated design of renewable ene...IJECEIAES
This paper presents a comprehensive analysis of power quality for static synchronous compensator on the distribution power system (DSTATCOM) when different types of energy sources are used to supply the DC link channel of DSTATCOM. These types of power supplies have a different effect on the compensation of DSTATCOM due to operation nature of these sources. The dynamic response of the DSTATCOM has investigated that produced by individual and hybrid energy sources to evaluate the influence of these sources in terms of time response, compensation process and reduce the harmonics of current source. Three cases have been considered in this study. First the photovoltaic (PV) cells alone, second the battery storage alone, and third a hybrid coordinated design between (PV cells with battery storage) is used. A boost DC-DC circuit has connected to a photovoltaic cell with maximum power point tracking (MPPT) while DC-DC buck-boost circuit is used with a battery. High coordination between PV and battery circuits in the hybrid system is used to improve the performance. A synchronous reference frame (SRF) with a unit vector has used to control the DSTATCOM. The simulation results show that the hybrid design has a superiority response compared to the individual sources.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Vaccine management system project report documentation..pdf
An Approach of D-STATCOM in Single Phase System with Power Quality Improvement
1. Ms. Akansha Chourasia. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 5, ( Part -2) May 2017, pp.35-39
www.ijera.com DOI: 10.9790/9622-0705023539 35 | P a g e
An Approach of D-STATCOM in Single Phase System with
Power Quality Improvement
Ms. Akansha Chourasia
Assistant Professor (Department of Electrical Engineering, PIEMR, Indore)
ABSTRACT
The paper describes the design of D-STATCOM in single phase for voltage interruption mitigation of fault in an
unbalance system. Speed of response is higher than static var compensator (SVC) and harmonic emission is less
than SVC that is why D-STATCOM is used in place of static var compensator. It validates the performance of
D-STATCOM for improving power quality and harmonics. It provides a guide for utilities to have an
appropriate choice of FACTS devices for enhancing stability. The work proposes a two pulse STATCOM
configurations in which voltage source inverter uses IGBT as a switching device have been simulated using
MATLAB/SIMULINK. Accordingly, simulation is first carried out to illustrate use of D-STATCOM in
mitigating voltage interruption in single phase. The scope of the paper is to explore the D-STATCOM in single
phase. Normally, D-STATCOM is not used in single phase, so an attempt has been made to introduce D-
STATCOM in single phase load or household applications.
Simulation results of 3KVAR D-STATCOM validate that integrated D-STATCOM with 230V, 91μF capacitor
is suited for single phase system with voltage interruption mitigation capacity.
Keywords - FACTS, voltage interruption, D-STATCOM, load compensation, VS
I. INTRODUCTION
At present world, electricity demand is
undergoing a profound transformation. Today
various power quality and reliability issues are faced
by us to maintain security of the whole power
system. Installing new transmission lines is a costlier
process. The ever changing atmospheric condition
has an impact on the transmission network and load.
Available power production does not meet the
growing load demand and better power quality. So
FACTS device is an alternative way to enhance
power transmission capability and quality. Last few
decades ago synchronous condensers are used for
this purpose but it has some limitations which are
overcome by the use of FACTS devices. The reasons
are ofcourse lower investment cost, no rotating parts,
symmetrical lead-lag capacity, no resonance
problem, no loss of synchronism; interfacing is
provided and requires less space in power system
network. [5]
Now a days there are many power related
issues and voltage interruption is the one among
them and is considered the most critical power
quality problem. By definition, voltage interruption
is defined as “momentary interruption causes a
complete loss of voltage either for a short or long
duration”. Due to sudden change in load or
disturbances in the utility system, voltage
interruption takes place. [10] Faults occur may be
either single phase or multiphase which results in
voltage fluctuation issues at the end. [3] Real power
flow in a lossless power system is-
P =
V1V2 sin α
X
Where, V1, V2 are the bus voltage magnitude at
sending end and receiving end respectively and α is
the angle between voltages V1 and V2. X is the
reactance of transmission line. [4]
Capacitor is used for compensation purpose from
last few years but capacitor has following
drawbacks-
The reactive power supplied by the shunt
capacitor is directly proportional to the bus
voltage.
Precise and rapid control of voltage is not
possible because it is a discrete device. [6]
Due to above drawbacks, a great opportunity to
regulate transmission of AC is offered by FACTS
controller by balancing the power flow in a
designated transmission line almost instantaneously.
FACTS technology is a collection of controllers not
a single controller. According to the definition of
FACTS that “an AC transmission system
incorporating power electronic based and other static
controller to enhance controllability and increasing
power transfer capability.” [1]
RESEARCH ARTICLE OPEN ACCESS
2. Ms. Akansha Chourasia. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 5, ( Part -2) May 2017, pp.35-39
www.ijera.com DOI: 10.9790/9622-0705023539 36 | P a g e
Fig. 1 Symbol of FACTS Device
The main aim of utilizing FACTS controllers are as
follows-
It manages the flow of power in a system.
Transmission lines can be loaded nearer to their
thermal limits without damage.
Prevent contingency followed by an outage.
Damp out the oscillations which limits the use of
line capability.
II. STATIC SYNCHRONOUS
COMPENSATOR (STATCOM)
Key device of FACTS controller is
STATCOM. Controlled reactive power is provided
by STATCOM. It is also known as advanced SVC.
It is shunt connected FACTS device. Shunt
connected controllable reactors as connected in SVC
are replaced by voltage source converter in
STATCOM. To deliver constant DC at the input of
inverter, an energy source is connected. It provides
compensated var by either providing or consuming
var from the system.
A. PRINCIPLE
The principle of STATCOM is like a
synchronous condenser or compensator that it
balances the flow of reactive power and voltage of
the system to the desired value in which it is
connected but faster than it. System voltage changes
linearly with the DC voltage across the capacitor.
B. STRUCTURE
Fig. 2 STATCOM
Brief STATCOM configuration is described below-
a) Voltage source inverter
b) Coupling transformer
c) Controller
Coupling Transformer - The leakage inductance of it
work as a coupling reactor. Its leakage inductance
act as a filter which filter out the current harmonic
components produced by output voltage of the
voltage source converter. Its compensation does not
depend on the coupling voltage.
Controller - It generates firing pulses for the
converter. It performs a feedback control. Here it is
pulse generator block in simulink. Controller
develops synchronism between output voltages of
the converter with the system voltage. The controller
has two terminals one is reference and other to
provide the gate pulses to the converter.
Capacitor- The voltage across capacitor does not
change instantaneously; therefore STATCOM gives
the desired response. Constant DC voltage is
provided by a capacitor to the inverter. [7]
C. OPERATION
The STATCOM is connected to the power system at
sending or middle or receiving end of the
transmission line where the power quality is a matter
of concern. The supply to voltage source inverter is
given by capacitor C which generates synchronized
output voltages. Following are the modes of
operation of STATCOM-
Uref – Desired voltage across STATCOM, which is
set manually
STATCOM does not exchange any reactive power
with the system when magnitudes of output
voltage of both are same means no reactive current
flows in the system.
STATCOM provides leading reactive power to the
system that is capacitive var when voltage sag or
interruption takes place and reactive current flows
from device to system through transformer
reactance.
STATCOM consumes lagging reactive power that
is inductive var when voltage swell occurs and
reactive current flows from system to device
through transformer reactance.
Amount of reactive power generated or
absorbed depending upon the firing angle of the
converter.
III. DESIGN OF D-STATCOM
A. Inverter Design
Inverters are used to convert fixed DC input
quantity to variable AC output quantity. In this work
a single phase two pulse voltage source inverter has
been developed. The capacitor is charged by a
battery which is used as energy storage here. Phase
delay between devices used is 30°.
3. Ms. Akansha Chourasia. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 5, ( Part -2) May 2017, pp.35-39
www.ijera.com DOI: 10.9790/9622-0705023539 37 | P a g e
B. Capacitor Sizing
It depends on the fault current. The value of VCmax is
the present upper limit of Cdc, and is two or three
times the Vdc. [3] The following equation is used to
calculate Cdc for single phase –
Cdc =
Vs.∆I.T
VCmax 2− Vdc2
Where,
Vs = Peak voltage
IL = Load current
T = Time Period
VCmax = pre set voltage of energy storage C
Vdc = Voltage across capacitor C
IV. ADVANTAGES OF STATCOM OVER
SVC
Reactive Component – lesser than SVC
Better transient response
Interfacing – It can be interfaced with real power
sources such as battery, fuel cell, super conducting
magnetic energy storage (SMES).
Characteristics – It is superior to SVC because as
reactive current can be maintained constant in
STATCOM whereas in SVC it linearly increases
with voltage.
Space – It requires less space as bulky passive
components such as reactors are eliminated. [2]
[9]
V. INDIAN SCENARIO
TABLE 1. Proposed STATCOM projects in India
State Location
S/s
v/g
level
(KV)
MVA
R
Ratin
g
Estima
ted
Cost
(Cr.)
J & K Udhampur
,Budgam
220 (+)125
/(-)25
57.5*2
Rajasthan Tinwari 220 (+)50/
(-)100
57.5
Andhra
Pradesh
Urvakond
a
220 (+)100
/(-)100
57.5
Karnataka Chitradurg
a
220 (+)50/
(-)100
57.5
Gujarat Radhanpu
r
220 (+)50/
(-)100
57.5
The total estimated cost of STATCOM
project is Rs.704 Crores and it will plan located in
different parts of India from north to south. Its cost
as well as rating in comparison with SVC is less.
The above details are for three phase. In the present
work an attempt has been done for single phase
utilities. [8]
VI. SIMULATION RESULTS AND
DISCUSSION
The simulation of D-STATCOM followed by
voltage interruption from sim power system library.
Fig.3 and fig.4 shows the simulink model of single
phase system without D-STATCOM and with D-
STATCOM respectively. Following parameters are
used -
Table 2: System Parameters
Supply voltage 230 V
Source impedance 1Ω, 1mH
Line impedance 0.1Ω, 1mH
Load impedance 30Ω, 2mH
The percentage of sag or interruption is calculated
as-
Sag (%) =
Vpre −Vpost
Vpre
*100
Sag =
325−0
325
*100
Sag= 100%
Fig. 3 Simulation of system without D-STATCOM
Fig. 4 Simulation of system with D-STATCOM
It is observed from the results in figure 6
that the load current Irms changes from 0 to 10amp
and the load voltage (rms) dropped from 230 to 0V.
From these the value of Cdc is determined as
follows-
4. Ms. Akansha Chourasia. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 5, ( Part -2) May 2017, pp.35-39
www.ijera.com DOI: 10.9790/9622-0705023539 38 | P a g e
Cdc =
325×10×20
1000×(10002−5502)
Cdc = 93μF
Where, ∆I = 10amp
T = 20ms
VCmax = 1000 V
Vdc = 550V
The VAR rating of the D-STATCOM when Cdc =
93μF is calculated as –
VAR Rating = 314.2 × Cdc × Vs2
= 314.2 × 93 × 10−6
× 3252
= 3086.43 VAR ≈ 3 KVAR
Fig.5 Real, Reactive power, Load voltage, Load
current, Apparent power during normal condition
Fig.6 Real, Reactive power, Load voltage, Load
current, Apparent power during voltage interruption
Fig.7 Real, Reactive power, Load voltage, Load
current, Apparent power during D-STATCOM
operation
Fig.5 shows the normal operation of the AC
system . Fig.6. shows single line to ground fault and
the duration of voltage interruption is from 0.4 to
0.6 seconds. Here the fault resistance is 0.001ohm
and the ground resistance is 0.001ohm. In fig.7 D-
STATCOM become active, supplies reactive power
to the AC system. Due to charging and discharging
of capacitor connected across the inveter, spikes are
observed at the starting and end points of voltage
interruption.
Fig. 8 Total harmonic distortion under normal
condition
Fig. 9 Total harmonic distortion during voltage
interruption
Fig.10 Total harmonic distortion during D-
STATCOM operation
Above Fig.8, 9, 10 show that the factor
total harmonic distortion also affects during voltage
sag. During D-STATCOM operation it clearly
indicates that THD also improves.
Table 3: Comparison table
Position THD
(%)
Voltage
regulation (%)
Power
factor
Without
fault
0 3.83 0.4
With fault 91.66 100 0
With D-
STATCOM
1.96 8.33 0.7
5. Ms. Akansha Chourasia. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 5, ( Part -2) May 2017, pp.35-39
www.ijera.com DOI: 10.9790/9622-0705023539 39 | P a g e
VII. CONCLUSION
From the responses of simulation results it is
observed that the single phase D-STATCOM is
adequate to mitigate voltage interruption as well as
improving power quality of system efficiently. In
small utilities also if harmonics disturbs the whole
system and reduce the power factor then this method
will be useful. Large scale use of FACTS devices is
an assured scenario.
Lastly, D-STATCOM demonstrates the
excellent performance and will be an important
feature in household system and other single phase
utilities in mitigating power quality problems in the
near future.
REFERENCES
[1]. Yao Xu, Fangxing Li, “Adaptive PI control of
STATCOM for voltage regulation”, IEEE
transactions on power delivery, vol 29, no 3, pp.
1002-1011, June 2014.
[2]. Ganesh Barve, “Application study of FACTS
devices in Indian power system”, International
journal of computing & technology, volume 1,
issue 1, pp 57-59, February 2014.
[3]. S.B. Aruna, “Power flow control by using
optimal location of STATCOM”, Publications of
problems & application in engineering research
paper, volume 04, special issue 01, pp. 305-310,
2013.
[4]. Woei-Luen Chen, Wei-Gang Liang, Hrong-
Sheng Gau, “Design of a mode decoupling
STATCOM for voltage control of wind driven
induction generator system”, IEEE transactions
on power delivery. Volume 25, no.3, pp. 1758-
1767, July 2012.
[5]. Rupal Singh, Dushyant Kumar Singh,
“Simulation of D-STATCOM for voltage
fluctuation”, IEEE, pp. 225-230, 2012.
[6]. Hirak K. Shah, P.N. Kapil, M.T. Shah
“Simulation & analysis of distribution static
compensator”,Second international conference
on advanced computing and communication
technologies, IEEE, pp. 1-4, 2011.
[7]. Irinjila Kranti Kiran, Jaya Laxmi,“Shunt versus
series compensation in the improvement of
power system performance”, International
journal of applied engineering research,
Dindigul, volume 02, no 1, pp. 28-37, 2011.
[8]. Henri Masdi, Norman Mariun, Senan Mahmud,
Azah Mohamed, Sallehhudin Yusuf “ Design of
a prototype of D-STATCOM for voltage sag
mitigation”, National power and energy
conference proceedings, IEEE, pp. 61-66, 2004.
[9]. P. Rao, M.L. Crow and Z. Yang, “STATCOM
control for power system voltage control
applications”, IEEE transactions power delivery,
vol 15, no 4, pp. 1311-1317, Oct 2000.
[10]. K.R.Pandiyar,“FACTS controllers in power
transmission and distribution”, New age
International Ltd., pp. 173-175, 2007.
[11]. Narain G. Hingorani, Laszlo Gyugyi,
“Understanding FACTS, concepts and
technology of flexible AC transmission
systems”, New York IEEE press, pp. 16-19,
2000.