Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145388
V. M. Murthy Balijepalli, V. Pradhan, S. Khaparde, R. M. Shereef
Demand response (DR) has an important role to play in the electricity market for maintaining the balance between supply and demand by introducing load flexibility instead of only adjusting generation levels, at almost all operational time scales. There are many players in the market who benefit from DR, like the TSO, DSOs, retailers and end-customers themselves. The recent advent of smart grid technologies advanced the integration of DR by providing the needed information and communication infrastructure to the existing grid. Available literature on DR talks about the concept and definitions of DR, possible DR models for various region-specific market structures along with few DR implementation experiences in a system with ever increasing levels of loads along with evolution of innovative technologies like renewables, micro-grids, PEVs, etc. In this paper, the available literature on DR is categorized into general concept papers and papers on DR models applicable to the wholesale or retail markets, and are presented in a precise manner.
{"title":"Review of demand response under smart grid paradigm","authors":"V. M. Murthy Balijepalli, V. Pradhan, S. Khaparde, R. M. Shereef","doi":"10.1109/ISET-INDIA.2011.6145388","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145388","url":null,"abstract":"Demand response (DR) has an important role to play in the electricity market for maintaining the balance between supply and demand by introducing load flexibility instead of only adjusting generation levels, at almost all operational time scales. There are many players in the market who benefit from DR, like the TSO, DSOs, retailers and end-customers themselves. The recent advent of smart grid technologies advanced the integration of DR by providing the needed information and communication infrastructure to the existing grid. Available literature on DR talks about the concept and definitions of DR, possible DR models for various region-specific market structures along with few DR implementation experiences in a system with ever increasing levels of loads along with evolution of innovative technologies like renewables, micro-grids, PEVs, etc. In this paper, the available literature on DR is categorized into general concept papers and papers on DR models applicable to the wholesale or retail markets, and are presented in a precise manner.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127753458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145340
M. Akbari, M. Golkar, S. Tafreshi
The stability of dc and ac bus voltage is of the most important issues in all microgrids including ac, dc or ac/dc hybrid microgrids. In this paper, a hybrid ac/dc microgrid is proposed to reduce processes of multiple reverse conversions in an ac or dc microgrid and to facilitate the connection of various renewable ac and dc sources and loads to power system. Also, all control schemes used among all converters will be developed in order to improve the voltage stability of hybrid microgrid. To give robustness to improved dynamic voltage stability of the microgrid, a voltage stabilizer is proposed and applied to the doubly fed induction generator (DFIG) installed in ac part. Furthermore, a particle swarm optimization (PSO) solution is proposed to optimize the various control gains among various converters in order to quickly restore and stabilize the voltage of both ac and dc parts under the different disturbances. The achieved results verify the controllers robustness and optimization algorithm efficiency.
{"title":"A PSO solution for improved voltage stability of a hybrid ac-dc microgrid","authors":"M. Akbari, M. Golkar, S. Tafreshi","doi":"10.1109/ISET-INDIA.2011.6145340","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145340","url":null,"abstract":"The stability of dc and ac bus voltage is of the most important issues in all microgrids including ac, dc or ac/dc hybrid microgrids. In this paper, a hybrid ac/dc microgrid is proposed to reduce processes of multiple reverse conversions in an ac or dc microgrid and to facilitate the connection of various renewable ac and dc sources and loads to power system. Also, all control schemes used among all converters will be developed in order to improve the voltage stability of hybrid microgrid. To give robustness to improved dynamic voltage stability of the microgrid, a voltage stabilizer is proposed and applied to the doubly fed induction generator (DFIG) installed in ac part. Furthermore, a particle swarm optimization (PSO) solution is proposed to optimize the various control gains among various converters in order to quickly restore and stabilize the voltage of both ac and dc parts under the different disturbances. The achieved results verify the controllers robustness and optimization algorithm efficiency.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"9 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116787714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145371
M. Raj, M. Alexander, M. Lydia
Energy is available in two different alternatives, non-renewable (coal, fuel and natural gas) and renewable (solar, wind, hydro and wave) sources. Especially, after the industrial revolution in the nineteenth century, first coal and then fuel oil are used as primary energy sources for the needs of modern communities. As it is known, fossil fuels have limited potential, and at the current rate of exploitation they are expected to be depleted within the next centuries. This is one of the reasons why clean, sustainable and environmentally friendly alternative energy resources like wind, solar, etc are currently sought. This paper aims to characterize the power curve of the wind energy production and to estimate the power when a WTG operates between the cut-in wind speed and the rated wind speed. These are done by different methods and their performance is measured using the root mean square error(RMSE). Through the results, it is proved that cluster center estimation method is the best method among all of the other proposed methods.
{"title":"Modeling of wind turbine power curve","authors":"M. Raj, M. Alexander, M. Lydia","doi":"10.1109/ISET-INDIA.2011.6145371","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145371","url":null,"abstract":"Energy is available in two different alternatives, non-renewable (coal, fuel and natural gas) and renewable (solar, wind, hydro and wave) sources. Especially, after the industrial revolution in the nineteenth century, first coal and then fuel oil are used as primary energy sources for the needs of modern communities. As it is known, fossil fuels have limited potential, and at the current rate of exploitation they are expected to be depleted within the next centuries. This is one of the reasons why clean, sustainable and environmentally friendly alternative energy resources like wind, solar, etc are currently sought. This paper aims to characterize the power curve of the wind energy production and to estimate the power when a WTG operates between the cut-in wind speed and the rated wind speed. These are done by different methods and their performance is measured using the root mean square error(RMSE). Through the results, it is proved that cluster center estimation method is the best method among all of the other proposed methods.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128299671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145357
S. Srinath, C. Kumar, M. Selvan
The impact of voltage quality on the operation of sensitive equipment is very critical. Dynamic Voltage Compensator (DVC) is the prime solution to mitigate the voltage quality problems. This paper investigates the compensation performance of a DVC connected to a distribution system, equipped with a simple control based on in-phase compensation and without using any transformations for reference generation. The efficacy of the controller under steady state operation to mitigate voltage sag, swell and unbalance is analyzed through intensive simulation in MATLAB / SIMULINK. The present investigation is confined to balanced sinusoidal systems with a fixed balanced load. The transformation less approach leads to simple control with reduced computation.
{"title":"Dynamic Voltage Compensator: Transformationless control perspective","authors":"S. Srinath, C. Kumar, M. Selvan","doi":"10.1109/ISET-INDIA.2011.6145357","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145357","url":null,"abstract":"The impact of voltage quality on the operation of sensitive equipment is very critical. Dynamic Voltage Compensator (DVC) is the prime solution to mitigate the voltage quality problems. This paper investigates the compensation performance of a DVC connected to a distribution system, equipped with a simple control based on in-phase compensation and without using any transformations for reference generation. The efficacy of the controller under steady state operation to mitigate voltage sag, swell and unbalance is analyzed through intensive simulation in MATLAB / SIMULINK. The present investigation is confined to balanced sinusoidal systems with a fixed balanced load. The transformation less approach leads to simple control with reduced computation.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134399369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145376
S. Doolla, Jayesh G. Priolkar
The gap between supply and demand is never constant and is reflected as frequency deviation in power systems. Recent integration of renewable energy sources as distributed generators at the distribution level increase complexity in terms of control and stability. These distributed generators along with local load and storage constitute microgrids. Various control schemes and strategies with distributed storage is discussed in greater detail. Droop control for power electronic based distributed generators for frequency and voltage control in low voltage microgrid is also presented. The advantages and limitations of the various control strategies is discussed.
{"title":"Analysis of frequency control in isolated microgrids","authors":"S. Doolla, Jayesh G. Priolkar","doi":"10.1109/ISET-INDIA.2011.6145376","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145376","url":null,"abstract":"The gap between supply and demand is never constant and is reflected as frequency deviation in power systems. Recent integration of renewable energy sources as distributed generators at the distribution level increase complexity in terms of control and stability. These distributed generators along with local load and storage constitute microgrids. Various control schemes and strategies with distributed storage is discussed in greater detail. Droop control for power electronic based distributed generators for frequency and voltage control in low voltage microgrid is also presented. The advantages and limitations of the various control strategies is discussed.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122344974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145362
Sarasij Das, P. Rao
Growing use of digital instruments in smart grids (SG) is resulting in the rapid increase of the measured data volume. In future SG, vast amount of data will be generated by smart meters, PMU based WAMS, SCADA and other monitoring devices. While research has been done to find suitable compression technologies to store power system disturbance and PMU data; there is lack of research on the storage of SCADA data which is basically steady state operational data of the grid. Presently, utilities store some important SCADA data for a limited period and then they either delete them or store them in unreliable manner (CD/DVD etc.). The investigations presented here explore the application of Principal Component Analysis based lossy compression technique for archiving the steady state operational data. Four important operational data - voltage, line flow, MW and MVAr generation are considered for the study. The effectiveness of the proposed method is evaluated considering practical data pertaining to the Southern Regional Grid of India. The results illustrate the usefulness of the technique.
{"title":"Principal component analysis based compression scheme for power system steady state operational data","authors":"Sarasij Das, P. Rao","doi":"10.1109/ISET-INDIA.2011.6145362","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145362","url":null,"abstract":"Growing use of digital instruments in smart grids (SG) is resulting in the rapid increase of the measured data volume. In future SG, vast amount of data will be generated by smart meters, PMU based WAMS, SCADA and other monitoring devices. While research has been done to find suitable compression technologies to store power system disturbance and PMU data; there is lack of research on the storage of SCADA data which is basically steady state operational data of the grid. Presently, utilities store some important SCADA data for a limited period and then they either delete them or store them in unreliable manner (CD/DVD etc.). The investigations presented here explore the application of Principal Component Analysis based lossy compression technique for archiving the steady state operational data. Four important operational data - voltage, line flow, MW and MVAr generation are considered for the study. The effectiveness of the proposed method is evaluated considering practical data pertaining to the Southern Regional Grid of India. The results illustrate the usefulness of the technique.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"505 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115887613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145356
S. Arumugam, S. Ramareddy
This paper proposes a high efficiency full bridge series-parallel resonant inverter for high frequency applications (Induction Heating) by using asymmetrical voltage cancellation control. The operating frequency is automatically adjusted to maintain a small constant lagging phase angle under load parameter variation. The output power is controlled using the asymmetrical voltage cancellation technique. The full bridge series-parallel resonant tank is designed without the use of output transformer. This results in an increase of the net efficiency of the induction heating system. This system has an advantage like reduced volume and switching losses. The circuit model is developed for the closed loop system and they are used for simulation studies. The simulation results of closed loop systems are presented. Experimental results are compared with simulation results.
{"title":"A novel analysis of full bridge series-parallel resonant inverter for high frequency application","authors":"S. Arumugam, S. Ramareddy","doi":"10.1109/ISET-INDIA.2011.6145356","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145356","url":null,"abstract":"This paper proposes a high efficiency full bridge series-parallel resonant inverter for high frequency applications (Induction Heating) by using asymmetrical voltage cancellation control. The operating frequency is automatically adjusted to maintain a small constant lagging phase angle under load parameter variation. The output power is controlled using the asymmetrical voltage cancellation technique. The full bridge series-parallel resonant tank is designed without the use of output transformer. This results in an increase of the net efficiency of the induction heating system. This system has an advantage like reduced volume and switching losses. The circuit model is developed for the closed loop system and they are used for simulation studies. The simulation results of closed loop systems are presented. Experimental results are compared with simulation results.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"72 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131849914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145375
Xavier Raj.I Andrew, M. Anand, P. Sivakumar
Modern technology has given rise to a slew of forward looking enhancements for systems that transmit and distribute electricity. Distribution networks must be carefully controlled in order to maintain an acceptable power supply quality. In order to meet sustained load demands during varying natural conditions, different renewable energy sources need to be integrated with each other. This paper describes dynamic modeling and simulation results of a renewable energy based hybrid power system on the combination of solar cell ,fuel cell and wind turbine systems for power generation. Dynamic modeling of various components of this isolated system is presented. Transient responses of the system to step changes in the load, ambient temperature, radiation, and wind speed in a number of possible situations are studied. The results show that the proposed hybrid power system can tolerate the rapid changes in natural conditions and suppress the effects of these fluctuations on the voltage within the acceptable range. We designed a flexible DSP-controlled three-phase power electronic converter for the integration of distributed energy generation into networks. The further increase of energy conversion from renewable energy sources demands a share of the conventional centralized grid control. This requires a fast and flexible control system. The control is realized with embedded model details of DSC. The system structure, the special problems resulting from the use of a DSP-system and the implementation of the inverter control are described. The models have been developed by means of Simulink.
{"title":"Modelling and analysis of emulator for distributed generation sourced smart grid using digital signal controller (TMS320F28335)","authors":"Xavier Raj.I Andrew, M. Anand, P. Sivakumar","doi":"10.1109/ISET-INDIA.2011.6145375","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145375","url":null,"abstract":"Modern technology has given rise to a slew of forward looking enhancements for systems that transmit and distribute electricity. Distribution networks must be carefully controlled in order to maintain an acceptable power supply quality. In order to meet sustained load demands during varying natural conditions, different renewable energy sources need to be integrated with each other. This paper describes dynamic modeling and simulation results of a renewable energy based hybrid power system on the combination of solar cell ,fuel cell and wind turbine systems for power generation. Dynamic modeling of various components of this isolated system is presented. Transient responses of the system to step changes in the load, ambient temperature, radiation, and wind speed in a number of possible situations are studied. The results show that the proposed hybrid power system can tolerate the rapid changes in natural conditions and suppress the effects of these fluctuations on the voltage within the acceptable range. We designed a flexible DSP-controlled three-phase power electronic converter for the integration of distributed energy generation into networks. The further increase of energy conversion from renewable energy sources demands a share of the conventional centralized grid control. This requires a fast and flexible control system. The control is realized with embedded model details of DSC. The system structure, the special problems resulting from the use of a DSP-system and the implementation of the inverter control are described. The models have been developed by means of Simulink.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"17 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130646710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145393
C. Sreeja, S. Arun
Multilevel technology permits the achievement of high power ratings with voltage limited devices. Voltage source multilevel inverter has become more and more popular, thanks to their capability to meet the increasing demand of power ratings and power quality associated with reduced harmonic distortion and lower electromagnetic interference. Pulse width modulation based on space vectors (SVPWM) technique has become the most popular and important PWM technique for three phase voltage source inverter. The dwell time of the neighbouring voltage space vectors in SVPWM is considered according to volt-second balancing principle. Three switching points are obtained from the dwell times. According to the compared results and location of the triangle, that the reference vector falls in the switching sequence can be changed. The corresponding simulation model is build using Matlab/Simulink and the simulation result shows the correctness and feasibility of the algorithm.
{"title":"A novel control algorithm for three phase multilevel inverter using SVM","authors":"C. Sreeja, S. Arun","doi":"10.1109/ISET-INDIA.2011.6145393","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145393","url":null,"abstract":"Multilevel technology permits the achievement of high power ratings with voltage limited devices. Voltage source multilevel inverter has become more and more popular, thanks to their capability to meet the increasing demand of power ratings and power quality associated with reduced harmonic distortion and lower electromagnetic interference. Pulse width modulation based on space vectors (SVPWM) technique has become the most popular and important PWM technique for three phase voltage source inverter. The dwell time of the neighbouring voltage space vectors in SVPWM is considered according to volt-second balancing principle. Three switching points are obtained from the dwell times. According to the compared results and location of the triangle, that the reference vector falls in the switching sequence can be changed. The corresponding simulation model is build using Matlab/Simulink and the simulation result shows the correctness and feasibility of the algorithm.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132890367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145339
T. Logenthiran, D. Srinivasan
Demand response programs play a much important role in smart grid. Plug-in Hybrid Electrical Vehicles (PHEV) have potential to increase the ability of residential customers to participate in demand response programs. Therefore, a new infrastructure that enables vehicle to participate in demand response programs is needed. Smart charging and discharging plans will lower the operational cost of electric vehicles and reduces peak system load. In order to identify the best solution, a decentralized Multi-Agent System (MAS), and a hybrid algorithm combined with an Evolutionary Algorithm (EA) and a Linear Programming (LP) were developed to manage a power distribution system with PHEVs in this paper. Outcomes of simulation studies show that a central scheduling system can obtain an optimal way of charging and discharging of PHEVs, but it is unfeasible in practice. Centralized methods require complete information on when and how much PHEVs are needed to charge and discharge beforehand. This is not available in practical systems. The multi-agent system approach proves that it is a scalable decentralized methodology which can adapt to incomplete and unpredictable information while the numerical outcomes are not much worse than that from a central scheduler.
{"title":"Multi-agent system for managing a power distribution system with Plug-in Hybrid Electrical vehicles in smart grid","authors":"T. Logenthiran, D. Srinivasan","doi":"10.1109/ISET-INDIA.2011.6145339","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145339","url":null,"abstract":"Demand response programs play a much important role in smart grid. Plug-in Hybrid Electrical Vehicles (PHEV) have potential to increase the ability of residential customers to participate in demand response programs. Therefore, a new infrastructure that enables vehicle to participate in demand response programs is needed. Smart charging and discharging plans will lower the operational cost of electric vehicles and reduces peak system load. In order to identify the best solution, a decentralized Multi-Agent System (MAS), and a hybrid algorithm combined with an Evolutionary Algorithm (EA) and a Linear Programming (LP) were developed to manage a power distribution system with PHEVs in this paper. Outcomes of simulation studies show that a central scheduling system can obtain an optimal way of charging and discharging of PHEVs, but it is unfeasible in practice. Centralized methods require complete information on when and how much PHEVs are needed to charge and discharge beforehand. This is not available in practical systems. The multi-agent system approach proves that it is a scalable decentralized methodology which can adapt to incomplete and unpredictable information while the numerical outcomes are not much worse than that from a central scheduler.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130144864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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