Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145352
F. Pazheri, Hammad Khan, I. Ahamed
Energy consumption across the world is increasing at a rapid rate and governments are concerned about the environmental pollution. Thus a modern power grid needs to become smarter in order to provide an affordable, reliable and sustainable supply of electricity. For these reasons, considerable activity has been carried out in the world to formulate and promote a vision for the development of future smart power grid. This paper reviews the initiatives taken by various governments across the world and also highlights how Saudi Arabia can benefit by implementing Smart grid technologies.
{"title":"Smart grid implementation across the globe: A survey","authors":"F. Pazheri, Hammad Khan, I. Ahamed","doi":"10.1109/ISET-INDIA.2011.6145352","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145352","url":null,"abstract":"Energy consumption across the world is increasing at a rapid rate and governments are concerned about the environmental pollution. Thus a modern power grid needs to become smarter in order to provide an affordable, reliable and sustainable supply of electricity. For these reasons, considerable activity has been carried out in the world to formulate and promote a vision for the development of future smart power grid. This paper reviews the initiatives taken by various governments across the world and also highlights how Saudi Arabia can benefit by implementing Smart grid technologies.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"1 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":"114779250","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.2011.6145391
S. Reshma, M. Mohammed, J. Abdul Jaleel, P. Sreejaya
A Distributed Power System (DPS) which consists of two Uninterruptible Power Supplies (UPS) system is investigated. The focus of work is on the inverter control stages. A key feature of the control scheme is that it uses only those variables which are locally measured at the inverter. So there is no need of communication between the inverters. Real and reactive power sharing between the inverters is achieved by controlling two independent parameters at the inverter- the power angle and the fundamental inverter voltage magnitude. The control algorithm makes sure that the total load is shared between the supplies in accordance with their rated power levels and the frequency of the supplies are restored to the rated values after the transition. Simulations are performed in MATLAB SIMULINK environment with Sine PWM control and Space Vector PWM control.
{"title":"Control of parallel operated inverters","authors":"S. Reshma, M. Mohammed, J. Abdul Jaleel, P. Sreejaya","doi":"10.1109/ISET-INDIA.2011.6145391","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145391","url":null,"abstract":"A Distributed Power System (DPS) which consists of two Uninterruptible Power Supplies (UPS) system is investigated. The focus of work is on the inverter control stages. A key feature of the control scheme is that it uses only those variables which are locally measured at the inverter. So there is no need of communication between the inverters. Real and reactive power sharing between the inverters is achieved by controlling two independent parameters at the inverter- the power angle and the fundamental inverter voltage magnitude. The control algorithm makes sure that the total load is shared between the supplies in accordance with their rated power levels and the frequency of the supplies are restored to the rated values after the transition. Simulations are performed in MATLAB SIMULINK environment with Sine PWM control and Space Vector PWM control.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"39 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":"128321772","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.2011.6145398
N. Zaveri, A. Chudasama
This paper focuses on the various control techniques of reference current generation for harmonic mitigation with a view to the problem of source current harmonics caused by the non-linear loads. All the techniques are analyzed mathematically and simulation results are compared in terms of compensation performance under different supply voltage conditions. Control strategies analyzed are the Instantaneous power theory, Symmetrical current component theory and an improved d-q theory. Simulation results are obtained under sinusoidal voltage source condition and distorted source voltage condition with voltage source convertor. The comparison and effectiveness of all the methods are based on the mathematical and theoretical analysis. Simulation results have been obtained with MATLAB employing a three phase three wire test system.
{"title":"Evaluation of control strategies for parallel active filter under different supply voltage conditions","authors":"N. Zaveri, A. Chudasama","doi":"10.1109/ISET-INDIA.2011.6145398","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145398","url":null,"abstract":"This paper focuses on the various control techniques of reference current generation for harmonic mitigation with a view to the problem of source current harmonics caused by the non-linear loads. All the techniques are analyzed mathematically and simulation results are compared in terms of compensation performance under different supply voltage conditions. Control strategies analyzed are the Instantaneous power theory, Symmetrical current component theory and an improved d-q theory. Simulation results are obtained under sinusoidal voltage source condition and distorted source voltage condition with voltage source convertor. The comparison and effectiveness of all the methods are based on the mathematical and theoretical analysis. Simulation results have been obtained with MATLAB employing a three phase three wire test system.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"189 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":"133677242","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.2011.6145327
V. V., S. Ashok
ELECTRIC traction is considered one of the most widely used means of transportation because of its advantages such as being economical, environment friendly etc. Indian Railways has been using electric traction fed by 25kV single-phase AC supply obtained from three phase utility. This paper analyses the harmonic issues of the electric traction system by measuring voltage, current and harmonics at different traction substations. A passive harmonic LC filter is designed to filter out the prominent harmonics in the system.
{"title":"Harmonic filter for electric traction system","authors":"V. V., S. Ashok","doi":"10.1109/ISET-INDIA.2011.6145327","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145327","url":null,"abstract":"ELECTRIC traction is considered one of the most widely used means of transportation because of its advantages such as being economical, environment friendly etc. Indian Railways has been using electric traction fed by 25kV single-phase AC supply obtained from three phase utility. This paper analyses the harmonic issues of the electric traction system by measuring voltage, current and harmonics at different traction substations. A passive harmonic LC filter is designed to filter out the prominent harmonics in the system.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"10 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":"121054069","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.2011.6145396
Mohit Chhabra, Michelle Lim, F. Barnes
Increasing solar power penetration onto the electrical grid can lead to excessive power and frequency variations. This paper demonstrates the use of energy storage as a solution to reduce these variations by using certain operational modes.These modes will lead to reducing the cycling of conventional power plants thus, leading to a more stable grid frequency and also minimize the mechanical stress on turbines. With an increase in ancillary resources, utilities can generate higher revenues, and reduce variations in their area control error (ACE). A nonlinear model for a lead acid battery is used to implement the operational modes. A load-frequency control model, is used model the frequency variations within the band of ±1% of grid frequency.
{"title":"Frequency stabilization using solar smoothing, leveling and time shifting in a hybrid renewablenetwork","authors":"Mohit Chhabra, Michelle Lim, F. Barnes","doi":"10.1109/ISET-INDIA.2011.6145396","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145396","url":null,"abstract":"Increasing solar power penetration onto the electrical grid can lead to excessive power and frequency variations. This paper demonstrates the use of energy storage as a solution to reduce these variations by using certain operational modes.These modes will lead to reducing the cycling of conventional power plants thus, leading to a more stable grid frequency and also minimize the mechanical stress on turbines. With an increase in ancillary resources, utilities can generate higher revenues, and reduce variations in their area control error (ACE). A nonlinear model for a lead acid battery is used to implement the operational modes. A load-frequency control model, is used model the frequency variations within the band of ±1% of grid frequency.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"44 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":"121333068","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.2011.6145405
V. Verma, P. Pant, Bhim Singh
The paper proposes current control scheme for back-to-back voltage source converter (BTB-VSC) to regulate small capacity turbines run cage-rotor induction generator (CRIG) for small capacity power generation. The CRIG is connected to a local grid and supported by a BTB-VSC which regulates bidirectional power flow through a d.c. link. The CRIG is capable to feed partial load connected at the local grid in grid connected mode. In case of isolation, the connected load on local grid is scheduled to match the power rating of CRIG. Frequency at CRIG terminal is regulated by supplying/drawing real power to/from the local grid, whereas voltage is regulated by dynamically compensating reactive power demanded by the load. The scheme thus enforces the drawl of only the rated real power component of current from the CRIG terminals. The proposed scheme is current controlled and thus have better response, simple, easily implementable and requires lesser hardware. Implementation of the proposed scheme done through simulation in Matlab/Power System Blockset and the effectiveness of the system is gauged through simulation results.
提出了一种背靠背电压源变换器(BTB-VSC)的电流控制方案，用于调节小容量水轮机运行的笼式转子感应发电机(CRIG)的小容量发电。CRIG连接到本地电网，并由BTB-VSC支持，BTB-VSC通过直流链路调节双向功率流。在并网模式下，CRIG能够馈送局部电网连接的部分负荷。在隔离情况下，本地电网的接入负荷被调度为匹配CRIG的额定功率。CRIG终端的频率通过向本地电网提供/提取实际功率来调节，而电压通过动态补偿负载所需的无功功率来调节。因此，该方案强制从CRIG端子只抽取额定实际功率分量的电流。该方案采用电流控制，响应速度快，结构简单，易于实现，硬件需求少。在Matlab/Power System Blockset中对所提出的方案进行了仿真实现，并通过仿真结果对系统的有效性进行了检验。
{"title":"Indirect current control of BTB-VSC with cage-rotor induction generator operating in grid connected and isolated mode","authors":"V. Verma, P. Pant, Bhim Singh","doi":"10.1109/ISET-INDIA.2011.6145405","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145405","url":null,"abstract":"The paper proposes current control scheme for back-to-back voltage source converter (BTB-VSC) to regulate small capacity turbines run cage-rotor induction generator (CRIG) for small capacity power generation. The CRIG is connected to a local grid and supported by a BTB-VSC which regulates bidirectional power flow through a d.c. link. The CRIG is capable to feed partial load connected at the local grid in grid connected mode. In case of isolation, the connected load on local grid is scheduled to match the power rating of CRIG. Frequency at CRIG terminal is regulated by supplying/drawing real power to/from the local grid, whereas voltage is regulated by dynamically compensating reactive power demanded by the load. The scheme thus enforces the drawl of only the rated real power component of current from the CRIG terminals. The proposed scheme is current controlled and thus have better response, simple, easily implementable and requires lesser hardware. Implementation of the proposed scheme done through simulation in Matlab/Power System Blockset and the effectiveness of the system is gauged through simulation results.","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":"117300797","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.2011.6145347
Sweta Belliwali, Aravind Chakravarti, A. B. Raju
A mathematical model and simulation of directly coupled Photovoltaic(PV) water pumping system employing Switched Reluctance Motor is considered in this paper. This system is simple and consists of a switched reluctance motor driving a centrifugal water pump powered by a PV array. This motor is cheaper, efficient and reliable than conventional AC and DC electrical machines used for this type of application. This is because of its simple construction. PV array in this system is always operated at its maximum power point (MPP) by controlling the motor input current. A simple control system has been devised to achieve maximum power point tracking of the PV array. The feasibility of this control system has been demonstrated through dynamic simulation of the system developed in MATLAB/Simulink environment. Various simulation results are presented for different insolation levels of sunlight and at different temperatures.
{"title":"Mathematical modelling and simulation of directly coupled PV water pumping system employing Switched Reluctance Motor","authors":"Sweta Belliwali, Aravind Chakravarti, A. B. Raju","doi":"10.1109/ISET-INDIA.2011.6145347","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145347","url":null,"abstract":"A mathematical model and simulation of directly coupled Photovoltaic(PV) water pumping system employing Switched Reluctance Motor is considered in this paper. This system is simple and consists of a switched reluctance motor driving a centrifugal water pump powered by a PV array. This motor is cheaper, efficient and reliable than conventional AC and DC electrical machines used for this type of application. This is because of its simple construction. PV array in this system is always operated at its maximum power point (MPP) by controlling the motor input current. A simple control system has been devised to achieve maximum power point tracking of the PV array. The feasibility of this control system has been demonstrated through dynamic simulation of the system developed in MATLAB/Simulink environment. Various simulation results are presented for different insolation levels of sunlight and at different temperatures.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"49 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":"115732253","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.2011.6145359
Amit Kumar, S. Chakrabarti
The paper presents an artificial neural network (ANN)-based hybrid state estimator for estimating the states of a power system in the presence of conventional asynchronous as well as synchronous phasor measurements. Case studies on test systems show promising results for the ANN-based estimator. The paper also presents methodologies to enhance the visualization of the power system during the intervals between successive outputs of the conventional state estimator. The ANN-based state estimators trained with measurements from phasor measurement units (PMUs) are shown to be useful for enhancing the visualization of the power system during such intervals.
{"title":"ANN-based hybrid state estimation and enhanced visualization of power systems","authors":"Amit Kumar, S. Chakrabarti","doi":"10.1109/ISET-INDIA.2011.6145359","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145359","url":null,"abstract":"The paper presents an artificial neural network (ANN)-based hybrid state estimator for estimating the states of a power system in the presence of conventional asynchronous as well as synchronous phasor measurements. Case studies on test systems show promising results for the ANN-based estimator. The paper also presents methodologies to enhance the visualization of the power system during the intervals between successive outputs of the conventional state estimator. The ANN-based state estimators trained with measurements from phasor measurement units (PMUs) are shown to be useful for enhancing the visualization of the power system during such intervals.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"7 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":"123689611","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.2011.6145392
M. Rihan, M. Ahmad, M. S. Beg
Indian power grid has evolved into a huge complex infrastructure. The process of making a National grid is also underway. The developments in the area of smart grid technology around the World have led to a paradigm shift in the way power grids have been monitored and controlled. In order to have a national smart grid, the government of India has also initiated various projects. The installation of phasor measurement units is one such major initiative. This paper outlines the developments and present status of the Indian power grid and explores the key areas in which a wider deployment of PMUs may be utilized to make the national grid smart.
{"title":"Phasor measurement units in the Indian smart grid","authors":"M. Rihan, M. Ahmad, M. S. Beg","doi":"10.1109/ISET-INDIA.2011.6145392","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145392","url":null,"abstract":"Indian power grid has evolved into a huge complex infrastructure. The process of making a National grid is also underway. The developments in the area of smart grid technology around the World have led to a paradigm shift in the way power grids have been monitored and controlled. In order to have a national smart grid, the government of India has also initiated various projects. The installation of phasor measurement units is one such major initiative. This paper outlines the developments and present status of the Indian power grid and explores the key areas in which a wider deployment of PMUs may be utilized to make the national grid smart.","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":"116781444","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.2011.6145370
M. Venkata Kirthiga, S. Gurunathan, S. A. Daniel
Owing to urbanization and industrialization, there has been a steep increase in the electric power demand on contrary to the limited power generation facilities. This paper has attempted re-configuration of non-autonomous and autonomous micro-grids based on ranking of buses, formed with 60% and 100% penetration of the distributed generation respectively. Reconfiguration has been suggested in this work as a measure to improve the voltage profile of the system and to reduce the real power distribution losses. MATLAB code has been developed for ranking of buses based on loading capability and for optimal sizing of the DGs using Genetic algorithm and Particle Swarm Optimization techniques. The standard 33 bus distribution system has been used to validate the proposed reconfiguration algorithm.
{"title":"Optimal re-configuration of micro-grids based on ranking of buses","authors":"M. Venkata Kirthiga, S. Gurunathan, S. A. Daniel","doi":"10.1109/ISET-INDIA.2011.6145370","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145370","url":null,"abstract":"Owing to urbanization and industrialization, there has been a steep increase in the electric power demand on contrary to the limited power generation facilities. This paper has attempted re-configuration of non-autonomous and autonomous micro-grids based on ranking of buses, formed with 60% and 100% penetration of the distributed generation respectively. Reconfiguration has been suggested in this work as a measure to improve the voltage profile of the system and to reduce the real power distribution losses. MATLAB code has been developed for ranking of buses based on loading capability and for optimal sizing of the DGs using Genetic algorithm and Particle Swarm Optimization techniques. The standard 33 bus distribution system has been used to validate the proposed reconfiguration algorithm.","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":"127633122","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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