Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145381
Chandira Prabhu T Thiruvedhi, S. Sankaramoorthy, G. Venkataramani, S. Suresh
Demand Response (DR) in an electricity market means the change in the customer's normal consumption pattern in response to changing electricity price over time. More over it minimizes the need to build new lines and network expansions by efficient usage of current capacity of distribution system infrastructure. This paper evaluates the successful practice of DR programs in the US electricity market; its striking features and benefits. The theory behind relating temperature conditions and load data to determine when a DR program could be adopted. Thereupon the ideology of this paper is to propose an effective way to implement such a worthy notion in the regulated Indian electricity market. Espousing this idea, could bring in a vital improvement against load shedding practice adopted currently to reduce excessive power in a populous and heavy power demanding country like India.
{"title":"Demand response: A decisive approach for regulated market","authors":"Chandira Prabhu T Thiruvedhi, S. Sankaramoorthy, G. Venkataramani, S. Suresh","doi":"10.1109/ISET-INDIA.2011.6145381","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145381","url":null,"abstract":"Demand Response (DR) in an electricity market means the change in the customer's normal consumption pattern in response to changing electricity price over time. More over it minimizes the need to build new lines and network expansions by efficient usage of current capacity of distribution system infrastructure. This paper evaluates the successful practice of DR programs in the US electricity market; its striking features and benefits. The theory behind relating temperature conditions and load data to determine when a DR program could be adopted. Thereupon the ideology of this paper is to propose an effective way to implement such a worthy notion in the regulated Indian electricity market. Espousing this idea, could bring in a vital improvement against load shedding practice adopted currently to reduce excessive power in a populous and heavy power demanding country like India.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"18 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":"115421950","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.2011.6145403
H. T. Jadhav, R. Roy
Due to rise in awareness about the environmental protection and economical considerations there is increased interest in integrating wind into existing power systems. It has, therefore, become necessary to include wind energy conversion systems in the ELD problem. The study presented in this paper introduces a craziness based shuffled frog leaping optimization algorithm to solve the economic load dispatch (ELD) problem for different types of cost functions considering wind power as a negative load. The results are compared with well-established optimization techniques by considering thirteen and forty unit test systems.
{"title":"Economic load dispatch of a power system with wind energy using craziness based shuffled frog leaping algorithm","authors":"H. T. Jadhav, R. Roy","doi":"10.1109/ISET-INDIA.2011.6145403","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145403","url":null,"abstract":"Due to rise in awareness about the environmental protection and economical considerations there is increased interest in integrating wind into existing power systems. It has, therefore, become necessary to include wind energy conversion systems in the ELD problem. The study presented in this paper introduces a craziness based shuffled frog leaping optimization algorithm to solve the economic load dispatch (ELD) problem for different types of cost functions considering wind power as a negative load. The results are compared with well-established optimization techniques by considering thirteen and forty unit test systems.","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":"115625960","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.2011.6145355
K. Sundareswaran, P. S. Nayak, Ch Durga Venkatesh, H. B
The identification of optimal locations for 3 Static VAr Compensators (SVCs) in an IEEE 30 bus system is considered in this paper. The problem is drafted as an optimization task and the solution is achieved through a novel optimization method termed as probabilistic Particle Swarm Optimization (PPSO). The proposed algorithm is a suitable modification of the standard Particle Swarm Optimization (PSO) technique by incorporating probabilistic particle movement with discrete positions. The performance of the new algorithm is illustrated through extensive computer simulations.
{"title":"Optimal placement of FACTS devices using probabilistic Particle Swarm Optimization","authors":"K. Sundareswaran, P. S. Nayak, Ch Durga Venkatesh, H. B","doi":"10.1109/ISET-INDIA.2011.6145355","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145355","url":null,"abstract":"The identification of optimal locations for 3 Static VAr Compensators (SVCs) in an IEEE 30 bus system is considered in this paper. The problem is drafted as an optimization task and the solution is achieved through a novel optimization method termed as probabilistic Particle Swarm Optimization (PPSO). The proposed algorithm is a suitable modification of the standard Particle Swarm Optimization (PSO) technique by incorporating probabilistic particle movement with discrete positions. The performance of the new algorithm is illustrated through extensive computer simulations.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"46 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":"126158255","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.2011.6145390
M. Sham, K. Chethan, K. Vittal
Flexible AC Transmission System (FACTS) devices are inserted into power grids in series, in shunt, and in some cases, both in shunt and series for the improved power transmission capability. They also improve the controllability, stability and power quality of the power system. Static Synchronous Compensator (STATCOM) is a shunt type FACTS device connected at the midpoint of the transmission line to maintain the voltage at desired level by injecting/absorbing the reactive power. These devices have fast dynamic response time, which overlap with the response time of the line protection distance relays. This interaction affects the performance of distance protection relay during line faults. In this paper the design and development of a new adaptive distance relaying scheme to mitigate the adverse effects of the STATCOM is presented. A ±100MVA 48 pulse STATCOM with associated control system, connected at the midpoint of a typical 400KV transmission system is selected for simulation. The line faults of different types at various locations of the line are simulated using EMTDC/PSCAD® and the performance of newly developed adaptive distance protection scheme has been evaluated and efficacy of the proposed scheme is illustrated.
{"title":"Development of adaptive distance relay for STATCOM connected transmission line","authors":"M. Sham, K. Chethan, K. Vittal","doi":"10.1109/ISET-INDIA.2011.6145390","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145390","url":null,"abstract":"Flexible AC Transmission System (FACTS) devices are inserted into power grids in series, in shunt, and in some cases, both in shunt and series for the improved power transmission capability. They also improve the controllability, stability and power quality of the power system. Static Synchronous Compensator (STATCOM) is a shunt type FACTS device connected at the midpoint of the transmission line to maintain the voltage at desired level by injecting/absorbing the reactive power. These devices have fast dynamic response time, which overlap with the response time of the line protection distance relays. This interaction affects the performance of distance protection relay during line faults. In this paper the design and development of a new adaptive distance relaying scheme to mitigate the adverse effects of the STATCOM is presented. A ±100MVA 48 pulse STATCOM with associated control system, connected at the midpoint of a typical 400KV transmission system is selected for simulation. The line faults of different types at various locations of the line are simulated using EMTDC/PSCAD® and the performance of newly developed adaptive distance protection scheme has been evaluated and efficacy of the proposed scheme is illustrated.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"13 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":"128605379","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.2011.6145400
Nampuraja Enose, Research Analyst
Smart Grid is seeing one of the largest implementation of Communication infrastructure in the power utilities. The basic component that makes the Smart Grid work is this underlying robust information & communication technologies (ICT), which enables shared understanding between each of the complex systems in the grid. Traditionally utilities have implemented operations technology (OT) independently of information technology (IT). However in smart grid you see diverse communication networks and advanced IT systems coalesced into the traditional electrical grid, for a huge implementation of intelligent infrastructure. Therefore the greater challenge is to efficiently maintain and manage this mountain of infrastructure across diverse technologies, with multiple protocols and from different vendors in a coordinated manner. This paper therefore brings out the critical need of a Unified management system for a complex Smart Grid and proposes a system which is a combination of the Telecom Network Management System (NMS) and Utility Infrastructure Management System. This management system is built on the industry accepted and proven model of FCAPS (viz. Fault Management, Configuration Management, Accounting Management, Performance Management, Security Management) along with the set of best practices for IT Service Management (ITIL). This blend of concepts in a single pane view would provide a better platform to manage the complex Smart Grid infrastructure.
{"title":"A Unified management system for Smart Grid","authors":"Nampuraja Enose, Research Analyst","doi":"10.1109/ISET-INDIA.2011.6145400","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145400","url":null,"abstract":"Smart Grid is seeing one of the largest implementation of Communication infrastructure in the power utilities. The basic component that makes the Smart Grid work is this underlying robust information & communication technologies (ICT), which enables shared understanding between each of the complex systems in the grid. Traditionally utilities have implemented operations technology (OT) independently of information technology (IT). However in smart grid you see diverse communication networks and advanced IT systems coalesced into the traditional electrical grid, for a huge implementation of intelligent infrastructure. Therefore the greater challenge is to efficiently maintain and manage this mountain of infrastructure across diverse technologies, with multiple protocols and from different vendors in a coordinated manner. This paper therefore brings out the critical need of a Unified management system for a complex Smart Grid and proposes a system which is a combination of the Telecom Network Management System (NMS) and Utility Infrastructure Management System. This management system is built on the industry accepted and proven model of FCAPS (viz. Fault Management, Configuration Management, Accounting Management, Performance Management, Security Management) along with the set of best practices for IT Service Management (ITIL). This blend of concepts in a single pane view would provide a better platform to manage the complex Smart Grid infrastructure.","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":"126924653","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.2011.6145366
G. Renukadevi, K. Rajambal
This paper presents a generalized model of multi-phase induction motor drive using matlab/simulink. Multiphase induction motor (more than three phases) drives possess several advantages over conventional three-phase drives, such as lower torque pulsation, higher torque density, fault tolerance, stability, high efficiency and lower current ripple. When the number of phases increases, it is also possible to increase the power /torque per rms ampere for the same volume machine. In this paper, a generalized dq-axis model is developed in Matlab/Simulink for a multi-phase induction motor. The simulation results are presented for 5, 6, 7, 9 and 12 phase induction motor under varying load conditions. Transient response of the multi-phase induction motors are given for different number of phases.
{"title":"Generalized model of multi-phase induction motor drive using matlab/simulink","authors":"G. Renukadevi, K. Rajambal","doi":"10.1109/ISET-INDIA.2011.6145366","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145366","url":null,"abstract":"This paper presents a generalized model of multi-phase induction motor drive using matlab/simulink. Multiphase induction motor (more than three phases) drives possess several advantages over conventional three-phase drives, such as lower torque pulsation, higher torque density, fault tolerance, stability, high efficiency and lower current ripple. When the number of phases increases, it is also possible to increase the power /torque per rms ampere for the same volume machine. In this paper, a generalized dq-axis model is developed in Matlab/Simulink for a multi-phase induction motor. The simulation results are presented for 5, 6, 7, 9 and 12 phase induction motor under varying load conditions. Transient response of the multi-phase induction motors are given for different number of phases.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"358 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":"124515272","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.2011.6145348
S. Deb, P. Bhowmik, A. Paul
At present, illegal usage of electricity is a serious problem facing the power industry in many countries. An efficacious and worthwhile solution to counteract this problem can be realized by using: a) already existing electrical network for communication i.e. PLC(Power Line communication) b) smart metering system. In the prototype of detection system presented in this paper, test signal at high frequency is transmitted through the network and software at supplier's end compares data with reference data. Based on the outcome of this comparison, it can remotely be detected if there is any illegal electricity usage or not. The study documented in this paper puts forward a new and unprecedented current-based technique to tackle the problem of illegal electricity usage. This paper reveals the existence of very small line current during the detection test which proves to be the key to unlock the problem of illegal electricity usage detection.
{"title":"Remote detection of illegal electricity usage employing smart energy meter - A current based technique","authors":"S. Deb, P. Bhowmik, A. Paul","doi":"10.1109/ISET-INDIA.2011.6145348","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145348","url":null,"abstract":"At present, illegal usage of electricity is a serious problem facing the power industry in many countries. An efficacious and worthwhile solution to counteract this problem can be realized by using: a) already existing electrical network for communication i.e. PLC(Power Line communication) b) smart metering system. In the prototype of detection system presented in this paper, test signal at high frequency is transmitted through the network and software at supplier's end compares data with reference data. Based on the outcome of this comparison, it can remotely be detected if there is any illegal electricity usage or not. The study documented in this paper puts forward a new and unprecedented current-based technique to tackle the problem of illegal electricity usage. This paper reveals the existence of very small line current during the detection test which proves to be the key to unlock the problem of illegal electricity usage detection.","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":"128826405","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.2011.6145341
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 are developed in order to improve the voltage stability of the dc grid. Results are achieved considering the uncertainty of the generators and loads existed in microgrid verifying the robustness of the controllers to restore and stabilize quickly the voltage of the dc grid.
{"title":"Voltage control of a hybrid ac/dc microgrid in grid-connected operation mode","authors":"M. Akbari, M. Golkar, S. Tafreshi","doi":"10.1109/ISET-INDIA.2011.6145341","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145341","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 are developed in order to improve the voltage stability of the dc grid. Results are achieved considering the uncertainty of the generators and loads existed in microgrid verifying the robustness of the controllers to restore and stabilize quickly the voltage of the dc grid.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"211 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":"115973325","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.2011.6145374
F. Fernandez, P. Nair
Power factor and harmonic pollution are inseparable entities in power systems and both of them affect the overall efficiency of operation of the system. To increase the utilization factor of the system a power factor based billing scheme is already in place and a similar disincentive scheme is envisaged for the harmonic pollution as well. In this paper a new frequency domain expression for power factor is presented. The method involves acquisition of voltage and current waveforms at the measuring point and an analysis based on the waveform data. The expression is presented as a common index for determining power factor and its variation due to harmonic contents in voltage and current.
{"title":"A new expression for power factor under nonsinusoidal conditions","authors":"F. Fernandez, P. Nair","doi":"10.1109/ISET-INDIA.2011.6145374","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145374","url":null,"abstract":"Power factor and harmonic pollution are inseparable entities in power systems and both of them affect the overall efficiency of operation of the system. To increase the utilization factor of the system a power factor based billing scheme is already in place and a similar disincentive scheme is envisaged for the harmonic pollution as well. In this paper a new frequency domain expression for power factor is presented. The method involves acquisition of voltage and current waveforms at the measuring point and an analysis based on the waveform data. The expression is presented as a common index for determining power factor and its variation due to harmonic contents in voltage and current.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"19 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":"114621212","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.2011.6145377
A. Kulasekera, R. Gopura, K.T.M.U. Hemapala, N. Perera
The application of Multi-Agent Systems (MAS) in electrical power systems are becoming popular due to their inherent benefits such as increased autonomy, reactivity, proactivity and social ability. This paper reviews current research on the application of multi-agent systems in microgrid schemes. The paper is mainly focused on recent developments of multi-agent systems in different aspects of microgrids such as control, market modeling, optimization and power restoration. The future directions of multi-agent systems in microgrid applications are also discussed briefly. Furthermore, this review is concluded by discussing the development of an enhanced multi-agent based distributed control framework for microgrids.
{"title":"A review on multi-agent systems in microgrid applications","authors":"A. Kulasekera, R. Gopura, K.T.M.U. Hemapala, N. Perera","doi":"10.1109/ISET-INDIA.2011.6145377","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145377","url":null,"abstract":"The application of Multi-Agent Systems (MAS) in electrical power systems are becoming popular due to their inherent benefits such as increased autonomy, reactivity, proactivity and social ability. This paper reviews current research on the application of multi-agent systems in microgrid schemes. The paper is mainly focused on recent developments of multi-agent systems in different aspects of microgrids such as control, market modeling, optimization and power restoration. The future directions of multi-agent systems in microgrid applications are also discussed briefly. Furthermore, this review is concluded by discussing the development of an enhanced multi-agent based distributed control framework for microgrids.","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":"115131199","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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