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1) The document discusses using PV inverters to enhance voltage profiles on low voltage distribution networks by supplying reactive power. 2) Many distribution networks experience voltage drops that cause issues for connected equipment, and electric vehicle charging may exacerbate the problem. 3) The proposal is to use PV inverters to supply reactive power at night when the PV panels are inactive, taking advantage of the inverter capacity. During the day, excess capacity beyond active power generation would supply reactive power.
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This document proposes using a static compensator (STATCOM) connected to a battery energy storage system (BESS) to mitigate power quality issues from wind energy generation. Wind power fluctuates due to changing wind speed, which affects power quality. The STATCOM injects reactive power from the BESS to absorb harmonic current and regulate voltage. This improves power quality by making the source current harmonic-free and stabilizing the system voltage. The combination of BESS and STATCOM helps compensate for wind power fluctuations and produces higher quality power from the wind generation system.
Transformer basics for solar power plants
Transformers are used in solar power plants to step up the voltage from the photovoltaic system to the distribution voltage of the electric grid. Transformers work by transforming voltages through electromagnetic induction between a primary and secondary winding. The ratio of turns between the windings determines whether the voltage is stepped up or down. For solar power plants, a common transformer size is 0.75-2.5 MVA and helps step up the 15kV output of the solar system to the 34.5kV distribution voltage.
Introduction to reactive power control in electrical power
Introduction to reactive power control in electrical power
Reactive power in transmission line :
Reactive power control
Reactive power and its importance
Apparent Power
Reactive Power
Apparent Power
Reactive Power Formula
significance of reactive power and its need of compensation
this presentation is about the significance of the reactive power in the power grid, what are the drawbacks of the low level of the reactive power and what is the need of its compensation.
REACTIVE POWER
Reactive power supplies stored energy in reactive elements and must be supplied to magnetic equipment like motors and transformers. Problems with reactive power include excess heat from reactive current, inaccurate utility billing that doesn't account for reactive power, and potential equipment issues if not properly managed. Solutions include fixed capacitors/inductors to boost voltage, static VAR compensators to provide reactive power on transmission networks using automated impedance matching, and static compensators (STATCOMs) that generate reactive power using voltage source converters driven by DC storage capacitors.
Power factor
The document summarizes information about power factor correction. It defines key terms like working power, reactive power, and apparent power. It then explains that power factor is a measure of efficiency and discusses common causes of low power factor like induction motors. The document lists devices used for power factor improvement like static capacitors and synchronous condensers. It outlines issues with low power factor like higher utility bills and lower system capacity. Finally, it discusses benefits of power factor correction like reduced electricity bills and environmental benefits from improved energy efficiency.
New control of pv solar farm as statcom (pv statcom) for increasing grid powe...
New control of pv solar farm as statcom (pv statcom) for increasing grid power transmission limits during night and day
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Capacitor bank and improvement of power factor
In these presentation ,we have discussed about power factor, disadvantages of low power factor and how to improve it. Also, capacitor bank and how to install capacitor bank are discussed.
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This document proposes using a static compensator (STATCOM) connected to a battery energy storage system (BESS) to mitigate power quality issues from wind energy generation. Wind power fluctuates due to changing wind speed, which affects power quality. The STATCOM injects reactive power from the BESS to absorb harmonic current and regulate voltage. This improves power quality by making the source current harmonic-free and stabilizing the system voltage. The combination of BESS and STATCOM helps compensate for wind power fluctuations and produces higher quality power from the wind generation system.
Transformer basics for solar power plants
Transformers are used in solar power plants to step up the voltage from the photovoltaic system to the distribution voltage of the electric grid. Transformers work by transforming voltages through electromagnetic induction between a primary and secondary winding. The ratio of turns between the windings determines whether the voltage is stepped up or down. For solar power plants, a common transformer size is 0.75-2.5 MVA and helps step up the 15kV output of the solar system to the 34.5kV distribution voltage.
Introduction to reactive power control in electrical power
Introduction to reactive power control in electrical power
Reactive power in transmission line :
Reactive power control
Reactive power and its importance
Apparent Power
Reactive Power
Apparent Power
Reactive Power Formula
significance of reactive power and its need of compensation
this presentation is about the significance of the reactive power in the power grid, what are the drawbacks of the low level of the reactive power and what is the need of its compensation.
REACTIVE POWER
Reactive power supplies stored energy in reactive elements and must be supplied to magnetic equipment like motors and transformers. Problems with reactive power include excess heat from reactive current, inaccurate utility billing that doesn't account for reactive power, and potential equipment issues if not properly managed. Solutions include fixed capacitors/inductors to boost voltage, static VAR compensators to provide reactive power on transmission networks using automated impedance matching, and static compensators (STATCOMs) that generate reactive power using voltage source converters driven by DC storage capacitors.
Power factor
The document summarizes information about power factor correction. It defines key terms like working power, reactive power, and apparent power. It then explains that power factor is a measure of efficiency and discusses common causes of low power factor like induction motors. The document lists devices used for power factor improvement like static capacitors and synchronous condensers. It outlines issues with low power factor like higher utility bills and lower system capacity. Finally, it discusses benefits of power factor correction like reduced electricity bills and environmental benefits from improved energy efficiency.
New control of pv solar farm as statcom (pv statcom) for increasing grid powe...
New control of pv solar farm as statcom (pv statcom) for increasing grid power transmission limits during night and day
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Capacitor bank and improvement of power factor
In these presentation ,we have discussed about power factor, disadvantages of low power factor and how to improve it. Also, capacitor bank and how to install capacitor bank are discussed.
Statcom control scheme for power quality improvement of grid connected wind e...
This project aims to improve power quality for a grid-connected wind energy system using a STATCOM. The objectives are to maintain unity power factor at the source, meet reactive power needs of the wind generator and non-linear load, and provide fast response using hysteresis current control for the STATCOM. MATLAB/Simulink software is used to simulate the system both with and without STATCOM. The simulation results show that with STATCOM, harmonic distortion is eliminated in the load current and power quality is maintained at the point of common coupling.
Ajal UPQC
UPQC a novel method to efficiently utilize Sustainable / Alternate Energy Sources is a presentation about power quality issues and solutions. It discusses different power quality problems such as voltage sags, swells, harmonics, and reactive power issues. It then introduces several custom power devices that can address these problems including the STATCOM, DVR, and UPQC. The UPQC is described as an active series-shunt power line conditioner that can compensate for various power quality issues such as voltage sags/swells, imbalance, flicker, and harmonics. The presentation concludes by discussing future trends in power semiconductor switches and the balanced application of these new technologies.
L2 introduction to power system
This document provides an introduction to electric power systems. It discusses the key components of power systems including generators, transformers, substations, and loads. It also outlines the different voltage levels used in transmission and distribution networks. Specifically, it notes that transmission occurs at voltages such as 765kV, 400kV, and 220kV, while distribution occurs at lower voltages like 11kV, 415V, and 230V for households. The document aims to give students an overview of the structure and components that make up electric power systems.
Sssc
This document discusses active and reactive power flow control using a Static Synchronous Series Compensator (SSSC). The SSSC injects a controllable voltage in series with a transmission line to regulate power flow. It can control both real and reactive power flow to improve transmission efficiency. The SSSC consists of a voltage source converter connected to the line via a transformer. It provides advantages like power factor correction, load balancing, and reducing harmonic distortion.
Reactive power
This document summarizes a seminar on reactive power compensation. It discusses the different types of power, including active power, reactive power, and apparent power. It explains that reactive power is needed by magnetic equipment like transformers and motors to produce magnetizing flux. The document outlines the need for reactive power compensation to improve power factor, reduce losses, increase capacity, and improve voltage regulation. It then describes different compensation techniques like shunt compensation using capacitors at the load, substation, or transmission level. The document also discusses synchronous condensers and power electronics devices like thyristor controlled reactors, static VAR compensators, and thyristor controlled series compensators for reactive power compensation.
Thyristor switched capacitor PPT
In the modern power system the reactive power compensation is one of the main issues, the transmission of active power requires a difference in angular phase between voltages at the sending and receiving points (which is feasible within wide limits), whereas the transmission of reactive power requires a difference in magnitude of these same voltages (which is feasible only within very narrow limits). The reactive power is consumed not only by most of the network elements, but also by most of the consumer loads, so it must be supplied somewhere. If we can't transmit it very easily, then it ought to be generated where it is needed." (Reference Edited by T. J. E. Miller, Forward Page ix).Thus we need to work on the efficient methods by which VAR compensation can be applied easily and we can optimize the modern power system. VAR control technique can provides appropriate placement of compensation devices by which a desirable voltage profile can be achieved and at the same time minimizing the power losses in the system. This report discusses the transmission line requirements for reactive power compensation. In this report thyristor switched capacitor is explained which is a static VAR compensator used for reactive power management in electrical systems.
Seminar Topic For Electrical and Electronics Engineering (EEE)
Instantaneous Reactive Power Theory And Its Applications
Instantaneous Reactive Power Theory and its Applications to Active Power Filtering
The document discusses instantaneous reactive power (P-Q) theory, which was introduced by Hirofumi Akagi in 1983. P-Q theory defines instantaneous real and imaginary powers in the time domain, allowing it to be applied to non-sinusoidal systems. It has been widely used for harmonic compensation in active power filters. The document outlines the mathematical basis of P-Q theory, including Clarke transformations, definitions of instantaneous real and imaginary powers, and applications for compensating nonlinear loads. It also discusses developments and applications of P-Q theory, including its use in simulation and compensation of harmonic currents.
Power factor improvement
This document discusses power factor improvement. It defines power factor as the ratio of real power to apparent power in an electrical system, and explains that power factors below 1 require utilities to generate more power than is needed. Inductive loads are the main cause of low power factors. Methods for improving power factor include using static capacitors, synchronous condensers, and phase advancers to minimize losses and costs associated with low power factors.
AC/DC/AC Converter Fed RLC Series
An all-electric driveline based on a double wound flywheel, connected in series between main energy storage and a wheel motor, is presented. The flywheel works as a power buffer, allowing the battery to deliver optimized power. It also separates electrically the system in two sides, with the battery connected to the low voltage side and the wheel motor connected to the high voltage side. This paper presents the implementation and control of the AC/DC/AC converter, used to connect the flywheel high voltage windings to the wheel motor. The converter general operation and the adopted control strategy are discussed. The implementation of the AC/DC/AC converter has been described from a practical perspective. Results from experimental tests performed in the full-system prototype are presented. The prototype system is running with satisfactory stability during acceleration mode. Good efficiency and unity power factor could be achieved, based on vector control and space vector modulation
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Improvement of power quality has to be treated as a matter of at most importance in the open
market economy due to the increased use of non linear loads. Several devices have been used to mitigate
the power quality problems. Now a days researchers are concentrating on the use of FACT devices to
overcome power quality issues. Unified Power Quality Conditioner is one among such FACT devices upon
which this paper has concentrated for mitigating the Power Quality problems. Here a 3 phase 3 wire
UPQC is realised using MATLAB/SIMULINK to mitigate voltage sag and swell as well as to maintain
sinusoidal voltage and current at PCC irrespective of load dynamics.
A STATCOM CONTROL SCHEME FOR POWER QUALITY IMPROVEMENT OF GRID CONNECTED TO W...
A STATCOM CONTROL SCHEME FOR POWER QUALITY IMPROVEMENT OF GRID CONNECTED TO W...Power System Operation
Introduction to the project
Aim of the project
Objective of the project
FACTS devices
Introduction to STATCOM
Control characteristics of STATCOM
Renewable energy sources
Introduction to wind energy
Operation of double fed induction generator
MATLAB/SIMULINK software
Simulation results.
Conclusion
Power Factors
By installing variable speed AC drives, you can improve process controls, increase energy savings, reduce wear on machinery, and improve power factor (PF). AC drives improve PF by circulating the motor's reactive current internally rather than sending it back to the power supply. This allows the drive's input current to be lower than the output current to the motor. For example, a drive might have an output current of 94.5A but only require an input current of 60A, reducing losses in the power system by 5%. While the primary benefits of drives are improved control and energy savings, higher PF is an added advantage that can save on utility penalties for low PF.
A multilevel medium voltage inverter
This document proposes a multilevel medium-voltage inverter for direct grid connection of photovoltaic power plants without a step-up transformer. Recently, large PV power plants require medium-voltage connections but current systems use heavy transformers for voltage step-up. The proposed system uses a magnetic link to interconnect multiple PV arrays into a single source and generate isolated DC supplies for a multilevel inverter. This allows direct connection to the medium-voltage grid while overcoming issues like voltage imbalance and providing electrical isolation. Experimental results validated the system and demonstrated its advantages over traditional approaches using transformers.
Harmonics in pv
Importance of correct modelling of zero sequence parameters and other system components for Harmonic level evaluation for an inverter based system
Simulation and Analysis of a D-STATCOM for Load Compensation and Power Facto...
Power Generation and Transmission is a complex process, requiring the working of many
components of the power system in tandem to maximize the output. One of the main components to form
a major part is the reactive power in the system. It is required to maintain the voltage to deliver the
active power through the lines. Loads like motor loads and other loads require reactive power for their
operation. To improve the performance of ac power systems, we need to manage this reactive power in
an efficient way and this is known as reactive power compensation. In developing countries like India,
where the variation of power frequency and many such other determinants of power quality are
themselves a serious question, it is very vital to take positive steps in this direction.
The work presented here illustrates a method to compensate for the load reactive power using a
DSTATCOM
A DSTATCOM injects a current into the system to provide for the reactive component of the load
current. The validity of proposed method and achievement of desired compensation are confirmed by
the results of the simulation in MATLAB/ Simulink.
Application of Capacitors to Distribution System and Voltage Regulation
Application of Capacitors to
Distribution System and Voltage
Regulation
POWER FACTOR IMPROVEMENT,
System Harmonics
Voltage Regulation
Methods of Voltage Control
power quality improvement of power system network using UPFC
This document presents a project on improving power quality in a power system network using a Unified Power Flow Controller (UPFC). It defines power quality and discusses causes of poor power quality such as non-linear loads and switching operations. It then introduces Flexible AC Transmission Systems (FACTS) devices as a way to improve power quality and lists benefits such as increasing power transfer capability and improving transient stability. Specifically, it describes a UPFC, which combines a static synchronous compensator (STATCOM) and static synchronous series compensator (SSSC) to independently control real and reactive power flow. The UPFC configuration and components are shown, and it is explained how the UPFC can improve power quality by regulating voltage, impedance
New academic final year projects for btech and mtech
This document contains information about electrical projects from 2014 and 2015 published by Asoka Technologies. It lists 20 projects from 2014 and 7 projects from 2015 related to topics such as DC-DC converters, inverters, active filters, renewable energy applications, motor drives, and flexible AC transmission systems. Contact information is provided for Asoka Technologies including their phone number, email address and website.
A MULTILEVEL MEDIUM VOLTAGE INVERTER FOR STEP UP TRANSFORMER LESS GRID CONNEC...
A MULTILEVEL MEDIUM VOLTAGE INVERTER FOR STEP UP TRANSFORMER LESS GRID CONNECTION OF PHOTOVOLTAIC POWER PLANT
Automation of capacitor banks based on MVAR Requirement
Power generation systems generate two power components, real power measured in watts, and reactive power measured in VARs. Both of these power components need to be produced and transmitted from the generator to the service customer. Real power flows from the generator to the load, and is used to drive loads such as electrical motors, create the heating effect in heaters, and the heating/lighting effect in lamps. Losses and associated voltage drops in the network are effected by the vector sum of real power and reactive power. Reactive power provided from a generation or capacitor source to the load is the component necessary for the operation of magnetizing currents in motors, transformers and solenoids which are part of a customer service load.
A capacitor bank is a grouping of several identical capacitors interconnected in parallel or in series with one another. These groups of capacitors are typically used to correct or counteract undesirable characteristics, such as power factor lag or phase shifts inherent in alternating current (AC) electrical power supplies. Shunt capacitor banks are used to an increasing extent at all voltage levels. There are a variety of reasons for this like the growing need for power transfer on existing lines while avoiding transfer of reactive power, better use of existing power systems, improving voltage stability, right-of-way and cost problems, voltage control and compensation of reactive loads. Three-phase capacitor bank sizes vary from a few tenths of MVAr to several hundreds of MVAr. Here we are using 25MVAR capacitor bank for this purpose.
Here, we have simulated an automatic scheme for switching of capacitor bank based on mvar requirement of the system. They automatically sense the voltage and reactive power using transducers. Output from these transducers are given to sensing circuit where it is compare with normal parameters (voltage and reactive power) of the system. If the condition satisfies it automatically switch on capacitor bank. And this normalises the system parameters.
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Statcom control scheme for power quality improvement of grid connected wind e...
This project aims to improve power quality for a grid-connected wind energy system using a STATCOM. The objectives are to maintain unity power factor at the source, meet reactive power needs of the wind generator and non-linear load, and provide fast response using hysteresis current control for the STATCOM. MATLAB/Simulink software is used to simulate the system both with and without STATCOM. The simulation results show that with STATCOM, harmonic distortion is eliminated in the load current and power quality is maintained at the point of common coupling.
Ajal UPQC
UPQC a novel method to efficiently utilize Sustainable / Alternate Energy Sources is a presentation about power quality issues and solutions. It discusses different power quality problems such as voltage sags, swells, harmonics, and reactive power issues. It then introduces several custom power devices that can address these problems including the STATCOM, DVR, and UPQC. The UPQC is described as an active series-shunt power line conditioner that can compensate for various power quality issues such as voltage sags/swells, imbalance, flicker, and harmonics. The presentation concludes by discussing future trends in power semiconductor switches and the balanced application of these new technologies.
L2 introduction to power system
This document provides an introduction to electric power systems. It discusses the key components of power systems including generators, transformers, substations, and loads. It also outlines the different voltage levels used in transmission and distribution networks. Specifically, it notes that transmission occurs at voltages such as 765kV, 400kV, and 220kV, while distribution occurs at lower voltages like 11kV, 415V, and 230V for households. The document aims to give students an overview of the structure and components that make up electric power systems.
Sssc
This document discusses active and reactive power flow control using a Static Synchronous Series Compensator (SSSC). The SSSC injects a controllable voltage in series with a transmission line to regulate power flow. It can control both real and reactive power flow to improve transmission efficiency. The SSSC consists of a voltage source converter connected to the line via a transformer. It provides advantages like power factor correction, load balancing, and reducing harmonic distortion.
Reactive power
This document summarizes a seminar on reactive power compensation. It discusses the different types of power, including active power, reactive power, and apparent power. It explains that reactive power is needed by magnetic equipment like transformers and motors to produce magnetizing flux. The document outlines the need for reactive power compensation to improve power factor, reduce losses, increase capacity, and improve voltage regulation. It then describes different compensation techniques like shunt compensation using capacitors at the load, substation, or transmission level. The document also discusses synchronous condensers and power electronics devices like thyristor controlled reactors, static VAR compensators, and thyristor controlled series compensators for reactive power compensation.
Thyristor switched capacitor PPT
In the modern power system the reactive power compensation is one of the main issues, the transmission of active power requires a difference in angular phase between voltages at the sending and receiving points (which is feasible within wide limits), whereas the transmission of reactive power requires a difference in magnitude of these same voltages (which is feasible only within very narrow limits). The reactive power is consumed not only by most of the network elements, but also by most of the consumer loads, so it must be supplied somewhere. If we can't transmit it very easily, then it ought to be generated where it is needed." (Reference Edited by T. J. E. Miller, Forward Page ix).Thus we need to work on the efficient methods by which VAR compensation can be applied easily and we can optimize the modern power system. VAR control technique can provides appropriate placement of compensation devices by which a desirable voltage profile can be achieved and at the same time minimizing the power losses in the system. This report discusses the transmission line requirements for reactive power compensation. In this report thyristor switched capacitor is explained which is a static VAR compensator used for reactive power management in electrical systems.
Seminar Topic For Electrical and Electronics Engineering (EEE)
Instantaneous Reactive Power Theory And Its Applications
Instantaneous Reactive Power Theory and its Applications to Active Power Filtering
The document discusses instantaneous reactive power (P-Q) theory, which was introduced by Hirofumi Akagi in 1983. P-Q theory defines instantaneous real and imaginary powers in the time domain, allowing it to be applied to non-sinusoidal systems. It has been widely used for harmonic compensation in active power filters. The document outlines the mathematical basis of P-Q theory, including Clarke transformations, definitions of instantaneous real and imaginary powers, and applications for compensating nonlinear loads. It also discusses developments and applications of P-Q theory, including its use in simulation and compensation of harmonic currents.
Power factor improvement
This document discusses power factor improvement. It defines power factor as the ratio of real power to apparent power in an electrical system, and explains that power factors below 1 require utilities to generate more power than is needed. Inductive loads are the main cause of low power factors. Methods for improving power factor include using static capacitors, synchronous condensers, and phase advancers to minimize losses and costs associated with low power factors.
AC/DC/AC Converter Fed RLC Series
An all-electric driveline based on a double wound flywheel, connected in series between main energy storage and a wheel motor, is presented. The flywheel works as a power buffer, allowing the battery to deliver optimized power. It also separates electrically the system in two sides, with the battery connected to the low voltage side and the wheel motor connected to the high voltage side. This paper presents the implementation and control of the AC/DC/AC converter, used to connect the flywheel high voltage windings to the wheel motor. The converter general operation and the adopted control strategy are discussed. The implementation of the AC/DC/AC converter has been described from a practical perspective. Results from experimental tests performed in the full-system prototype are presented. The prototype system is running with satisfactory stability during acceleration mode. Good efficiency and unity power factor could be achieved, based on vector control and space vector modulation
Power Quality Improvement Using FACT Devices
Improvement of power quality has to be treated as a matter of at most importance in the open
market economy due to the increased use of non linear loads. Several devices have been used to mitigate
the power quality problems. Now a days researchers are concentrating on the use of FACT devices to
overcome power quality issues. Unified Power Quality Conditioner is one among such FACT devices upon
which this paper has concentrated for mitigating the Power Quality problems. Here a 3 phase 3 wire
UPQC is realised using MATLAB/SIMULINK to mitigate voltage sag and swell as well as to maintain
sinusoidal voltage and current at PCC irrespective of load dynamics.
A STATCOM CONTROL SCHEME FOR POWER QUALITY IMPROVEMENT OF GRID CONNECTED TO W...
A STATCOM CONTROL SCHEME FOR POWER QUALITY IMPROVEMENT OF GRID CONNECTED TO W...Power System Operation
Introduction to the project
Aim of the project
Objective of the project
FACTS devices
Introduction to STATCOM
Control characteristics of STATCOM
Renewable energy sources
Introduction to wind energy
Operation of double fed induction generator
MATLAB/SIMULINK software
Simulation results.
Conclusion
Power Factors
By installing variable speed AC drives, you can improve process controls, increase energy savings, reduce wear on machinery, and improve power factor (PF). AC drives improve PF by circulating the motor's reactive current internally rather than sending it back to the power supply. This allows the drive's input current to be lower than the output current to the motor. For example, a drive might have an output current of 94.5A but only require an input current of 60A, reducing losses in the power system by 5%. While the primary benefits of drives are improved control and energy savings, higher PF is an added advantage that can save on utility penalties for low PF.
A multilevel medium voltage inverter
This document proposes a multilevel medium-voltage inverter for direct grid connection of photovoltaic power plants without a step-up transformer. Recently, large PV power plants require medium-voltage connections but current systems use heavy transformers for voltage step-up. The proposed system uses a magnetic link to interconnect multiple PV arrays into a single source and generate isolated DC supplies for a multilevel inverter. This allows direct connection to the medium-voltage grid while overcoming issues like voltage imbalance and providing electrical isolation. Experimental results validated the system and demonstrated its advantages over traditional approaches using transformers.
Harmonics in pv
Importance of correct modelling of zero sequence parameters and other system components for Harmonic level evaluation for an inverter based system
Simulation and Analysis of a D-STATCOM for Load Compensation and Power Facto...
Power Generation and Transmission is a complex process, requiring the working of many
components of the power system in tandem to maximize the output. One of the main components to form
a major part is the reactive power in the system. It is required to maintain the voltage to deliver the
active power through the lines. Loads like motor loads and other loads require reactive power for their
operation. To improve the performance of ac power systems, we need to manage this reactive power in
an efficient way and this is known as reactive power compensation. In developing countries like India,
where the variation of power frequency and many such other determinants of power quality are
themselves a serious question, it is very vital to take positive steps in this direction.
The work presented here illustrates a method to compensate for the load reactive power using a
DSTATCOM
A DSTATCOM injects a current into the system to provide for the reactive component of the load
current. The validity of proposed method and achievement of desired compensation are confirmed by
the results of the simulation in MATLAB/ Simulink.
Application of Capacitors to Distribution System and Voltage Regulation
Application of Capacitors to
Distribution System and Voltage
Regulation
POWER FACTOR IMPROVEMENT,
System Harmonics
Voltage Regulation
Methods of Voltage Control
power quality improvement of power system network using UPFC
This document presents a project on improving power quality in a power system network using a Unified Power Flow Controller (UPFC). It defines power quality and discusses causes of poor power quality such as non-linear loads and switching operations. It then introduces Flexible AC Transmission Systems (FACTS) devices as a way to improve power quality and lists benefits such as increasing power transfer capability and improving transient stability. Specifically, it describes a UPFC, which combines a static synchronous compensator (STATCOM) and static synchronous series compensator (SSSC) to independently control real and reactive power flow. The UPFC configuration and components are shown, and it is explained how the UPFC can improve power quality by regulating voltage, impedance
New academic final year projects for btech and mtech
This document contains information about electrical projects from 2014 and 2015 published by Asoka Technologies. It lists 20 projects from 2014 and 7 projects from 2015 related to topics such as DC-DC converters, inverters, active filters, renewable energy applications, motor drives, and flexible AC transmission systems. Contact information is provided for Asoka Technologies including their phone number, email address and website.
A MULTILEVEL MEDIUM VOLTAGE INVERTER FOR STEP UP TRANSFORMER LESS GRID CONNEC...
A MULTILEVEL MEDIUM VOLTAGE INVERTER FOR STEP UP TRANSFORMER LESS GRID CONNECTION OF PHOTOVOLTAIC POWER PLANT
Automation of capacitor banks based on MVAR Requirement
Power generation systems generate two power components, real power measured in watts, and reactive power measured in VARs. Both of these power components need to be produced and transmitted from the generator to the service customer. Real power flows from the generator to the load, and is used to drive loads such as electrical motors, create the heating effect in heaters, and the heating/lighting effect in lamps. Losses and associated voltage drops in the network are effected by the vector sum of real power and reactive power. Reactive power provided from a generation or capacitor source to the load is the component necessary for the operation of magnetizing currents in motors, transformers and solenoids which are part of a customer service load.
A capacitor bank is a grouping of several identical capacitors interconnected in parallel or in series with one another. These groups of capacitors are typically used to correct or counteract undesirable characteristics, such as power factor lag or phase shifts inherent in alternating current (AC) electrical power supplies. Shunt capacitor banks are used to an increasing extent at all voltage levels. There are a variety of reasons for this like the growing need for power transfer on existing lines while avoiding transfer of reactive power, better use of existing power systems, improving voltage stability, right-of-way and cost problems, voltage control and compensation of reactive loads. Three-phase capacitor bank sizes vary from a few tenths of MVAr to several hundreds of MVAr. Here we are using 25MVAR capacitor bank for this purpose.
Here, we have simulated an automatic scheme for switching of capacitor bank based on mvar requirement of the system. They automatically sense the voltage and reactive power using transducers. Output from these transducers are given to sensing circuit where it is compare with normal parameters (voltage and reactive power) of the system. If the condition satisfies it automatically switch on capacitor bank. And this normalises the system parameters.
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Simulation and Analysis of a D-STATCOM for Load Compensation and Power Facto...
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Application of Capacitors to Distribution System and Voltage Regulation
power quality improvement of power system network using UPFC
power quality improvement of power system network using UPFC
New academic final year projects for btech and mtech
New academic final year projects for btech and mtech
A MULTILEVEL MEDIUM VOLTAGE INVERTER FOR STEP UP TRANSFORMER LESS GRID CONNEC...
A MULTILEVEL MEDIUM VOLTAGE INVERTER FOR STEP UP TRANSFORMER LESS GRID CONNEC...
Automation of capacitor banks based on MVAR Requirement
Automation of capacitor banks based on MVAR Requirement
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This paper presents the grid-tied Solar Photovoltaic generator system supplying to nonlinear loads based
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Solar PV system is a promising source of energy with great interest in clean and renewable energy sources.
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such as harmonics, imbalance, sags, swells, flickers and frequency variation. Power quality problems may
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Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
Droop control approach for power sharing in AC microgrid
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It is very useful power point presentation on the "Grid Voltage Regulation"
it consist all thing related with topic.
I have already presented and got 100% credit.
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This document discusses coordinated voltage-frequency (V-f) and active-reactive power (P-Q) control of photovoltaic (PV) generators with maximum power point tracking (MPPT) and battery storage in microgrids. It describes the configuration of a PV system connected to a microgrid through an inverter, including an MPPT boost converter and a battery connected via a bi-directional DC-DC converter. The control system utilizes four loops - one for MPPT control, two for V-f control at the inverter, and one for battery power management. The control algorithms are demonstrated on a single PV generator but could be applied to coordinate multiple generators in future distribution systems.
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This document discusses a novel multiport converter for solar PV-battery systems powering standalone loads. The proposed converter uses a reduced stage power converter based on current fed dual active bridge (CF-DAB) topology, which offers galvanic isolation and a high voltage ratio without sacrificing efficiency. It connects a photovoltaic panel, battery, and load via a multiport DC/DC converter and DC/AC inverter to regulate the load voltage. This system aims to maximize energy harvesting from the solar panels and provide backup power from the battery for off-grid applications.
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This document discusses the integration of distributed generation (e.g. fuel cells) with distribution systems and the challenges it presents for protection. It proposes using a Unified Power Quality Conditioner (UPQC) to address these challenges by compensating for reactive power imbalance, preventing fault current increases, and regulating voltage. The document compares two configurations of the UPQC - between the distributed generator and point of common coupling, and between the load and point of common coupling. Simulation results show that the latter configuration more effectively reduces fault current and compensates reactive power.
Photovoltaic Cell Fed 3-Phase Induction Motor Using MPPT Technique
This Paper emphasizes on proposing a cost effective photovoltaic (PV) fed 3 phase Induction motor drive which serves for rural pumping applications. Generally in a standalone system, the PV unit will charge the battery and the battery set up in turn will serve as a source for the inverter. A new single stage battery less power conversion is employed by designing a maximum power point tracker (MPPT) embedded boost converter which makes the overall cost of the setup to go down considerably. The realized as a prototype consisting PV array of 500watts, MPPT aided boost converter, three phase inverter and a three phase squirrel cage induction drive of 300 watts. An efficient and low cost micro controller dspic4011 is used a platform to code and implement the prominent perturb and observe MPPT technique. Sinusoidal pulse width modulation (SPWM) is the control technique employed for the three phase inverter. To validate the experimental results simulation of the whole set up is carried out in matlab /simulink environment. Simulation and hardware results reveal that the system is versatile.
Modeling and Simulation of Cascaded Multilevel Inverter fed PMSM Drive with P...
In this paper is to present PV system directly coupled to water pumping system for such areas where no
facility for electricity. Solar PV system have, PV Module, non-isolated Boost converter, Sinusoidal Pulse
width modulation inverter and pumping system through PMSM drive. The system is controlled by PI
controller. DC-DC converter is controlled in order to extract the maximum power from Solar PV system. The
implementation of multilevel inverters improved the torque and speed response under various operating
conditions. PI controller is employed as speed controller and PWM technique is used to trigger switches of
multilevel inverter. PV water-pumping is highly competitive compared to traditional energy technologies and
best suited for remote site applications that have small to moderate power requirements. The proposed
system consists of solar PV panel, a boost converter, a three phase VSI (Voltage Source Inverter) and a PMSM
coupled with a centrifugal water pump. By using MATLAB/SIMULINK software.
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This document discusses advancements in inverter technology. It begins with an introduction to inverters and their uses in converting DC to AC power. It then provides technical background on standard inverter concepts and classifications. The document outlines key advancements in inverter functionalities such as reactive power control and voltage/frequency ride-through capabilities. It discusses impacts and challenges of adopting advanced inverters, including potential grid support benefits and interoperability challenges. Specific examples of inverter advancements in photovoltaics and air conditioners are also summarized.
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The document discusses micro inverters, which convert direct current from solar panels into alternating current. It examines two common inverter control methods - voltage source inverter control and power-type PWM inverter control. It then proposes an improved PWM inverter control system that can achieve maximum power point tracking and ensure high power quality from photovoltaic cells. Simulation results show the improved system controls grid current waveform and achieves unity power factor while allowing arbitrary power output. The methodology section outlines the system components and PWM pulse generation process. It examines types of single-phase grid-connected inverters and concludes the improved control method regulates voltage/current waveforms and stability while enabling flexible power transfer.
Comparison of upqc and dvr in wind turbine fed fsig under asymmetric faults
This paper presents the mitigation of faults in wind turbine connected fixed speed induction generator using unified power quality conditioner and static compensator. The UPQC consists of shunt and series converters connected back-to-back through a dc-to-dc step up converter. The presence of the dc-to-dc step converter permits the UPQC to compensate faults for long duration. The series converter is connected to the supply side whereas the shunt converter is connected to the load side. The control system of the proposed UPQC is based on Id-Iq theory. The DVR consists of shunt and series converters connected back-to-back through a dc-to-dc step up converter. The presence of the dc-to-dc step converter permits the DVR to compensate faults for long duration. The series converter is connected to the supply side whereas the shunt converter is connected to the load side. The control system of the proposed DVR is based on
hysteresis voltage controlThe proposed wind turbine fed fixed speed induction generator is evaluated and simulated using MATLAB/SIMULINK environment with UPQC and DVR under asymmetric faults
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Power Quality Improvement of Utility Current in Grid Connected Photovoltaic S...
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Reactive Power Compensation in Distribution Network with Slide Mode MPPT Cont...
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Integration of solar PV Plant to utility grod by improving its power quality
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Droop control approach for power sharing in AC microgrid
Droop control approach for power sharing in AC microgrid
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Grid fault Control Scheme for Peak Current Reduction in Photovoltaic Inverte...
Application of Unified Power Flow Controller in Nigeria Power System for Impr...
Application of Unified Power Flow Controller in Nigeria Power System for Impr...
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IRJET- Impact of UPQC on Protection of Distributed Generation Integrated Dist...
Photovoltaic Cell Fed 3-Phase Induction Motor Using MPPT Technique
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Comparison of upqc and dvr in wind turbine fed fsig under asymmetric faults
Comparison of upqc and dvr in wind turbine fed fsig under asymmetric faults
Abstract
- 1. PV INVERTERS TO ENHANCE THE UTILIZATION OF AC NETWORKS M. R. I. D. Senevirathne, A. F. M. Shameel, U. M. T. D. Udagedara Supervised by Prof. J. B. Ekanayke, Dr. P. J. Binduhewa Faculty of Engineering, University of Peradeniya, Sri Lanka. In many LV distribution networks voltage drops in distribution lines causing many problems for sensitive equipment connected to these lines. The issue of poor voltage profile on distribution lines may severe with the connection of electric vehicle as users will start charging them after returning home. As a solution to this problem, in this paper a reactive power compensation mode of PV inverters is investigated. As number of PV installations is rapidly growing and grid tie PV inverters operate only during the day time, the use of the PV inverters during the night to enhance the voltage profile of distribution line by supplying reactive power to the system is considered. During the day time active power generated by PV panels is delivered to the system through the PV inverter. Any express capacity is used to supply reactive power. At the night since PV panels are inactive, full capacity of the inverter used to generate reactive power. The flow of active power through the PV inverter is controlled by applying an appropriate phase shift to the inverter output voltage with reference to the line voltage. In order to control the reactive power flow, the magnitude of the inverter output voltage is varied with respect to the magnitude of the distribution line voltage. If inverter output voltage magnitude is maintained above that of the distribution line, inverter can be operated as a reactive power generator. And also it can be operated as a reactive power consumer if necessary. A controller for the PV inverter which regulates the active and reactive power was developed. Inverter output current was measured and depending on the measured current two orthogonal time invariant dc components as direct component and quadrature component were derived. These components were controlled to follow the given current references such that active and reactive power flow can be regulated independently. The operation of the concept was proved by simulations.