Pub Date : 2011-12-01DOI: 10.1109/ISET-INDIA.2011.6145380
P. Latha, S. Anand, T. Ahamed
Demand response plays a key role in balancing the demand and supply in an electricity grid. Though the demand response measures implemented with industrial and large commercial consumers are very effective, some alternate solutions may be required in the case of systems predominated by domestic loads. Pumped storage schemes (PSS) are widely used for Demand Side Management (DSM) applications due to their high efficiency and quick response rate. But PSS often become unavailable if the environmental issues are considered. A practical method is to upgrade an existing hydro plant to a mixed pumped storage plant. This paper proposes a method to determine the optimum capacity of a mixed pumped storage unit/units which can be augmented to an existing hydro plant. In addition the proposed approach can be easily extended for scheduling applications in deregulated environment.
{"title":"Improvement of demand response using mixed pumped storage hydro plant","authors":"P. Latha, S. Anand, T. Ahamed","doi":"10.1109/ISET-INDIA.2011.6145380","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145380","url":null,"abstract":"Demand response plays a key role in balancing the demand and supply in an electricity grid. Though the demand response measures implemented with industrial and large commercial consumers are very effective, some alternate solutions may be required in the case of systems predominated by domestic loads. Pumped storage schemes (PSS) are widely used for Demand Side Management (DSM) applications due to their high efficiency and quick response rate. But PSS often become unavailable if the environmental issues are considered. A practical method is to upgrade an existing hydro plant to a mixed pumped storage plant. This paper proposes a method to determine the optimum capacity of a mixed pumped storage unit/units which can be augmented to an existing hydro plant. In addition the proposed approach can be easily extended for scheduling applications in deregulated environment.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"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":"114224335","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.2011.6145353
S. K. Jain, S. Singh
High resolution parametric methods offer many distinct advantage over conventional nonparametric methods for numerous applications in smart grid e.g. power quality monitoring and control, islanding detection, low frequency oscillations analysis, etc. Higher computational burden is the main cause of under utilization of these methods, which is dependent on the size of the autocorrelation matrix. The computational burden and the estimation accuracy pose contradictory requirements on the size of the autocorrelation matrix, thus making its selection rather challenging. This paper analyses the effect of various signal attributes (sampling frequency, noise, number of frequency components, number of samples, etc.) on the appropriate dimension of the autocorrelation matrix. The results of this study assist in selecting optimal dimension of the autocorrelation matrix for improved performance of the model based parametric estimation techniques.
{"title":"Impact of signal attributes on autocorrelation matrix dimension for smart grid solutions","authors":"S. K. Jain, S. Singh","doi":"10.1109/ISET-INDIA.2011.6145353","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145353","url":null,"abstract":"High resolution parametric methods offer many distinct advantage over conventional nonparametric methods for numerous applications in smart grid e.g. power quality monitoring and control, islanding detection, low frequency oscillations analysis, etc. Higher computational burden is the main cause of under utilization of these methods, which is dependent on the size of the autocorrelation matrix. The computational burden and the estimation accuracy pose contradictory requirements on the size of the autocorrelation matrix, thus making its selection rather challenging. This paper analyses the effect of various signal attributes (sampling frequency, noise, number of frequency components, number of samples, etc.) on the appropriate dimension of the autocorrelation matrix. The results of this study assist in selecting optimal dimension of the autocorrelation matrix for improved performance of the model based parametric estimation techniques.","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":"127822170","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.2011.6145372
Bipasha Mallick, S. Chakrabarti
This paper proposes a method for optimal placement of phasor measurement units (PMUs) for complete observability of power systems consisting of multiple areas. Binary integer programming is used to minimize the total number of PMUs and maximize the measurement redundancy at the boundary buses. The proposed method is applied to the IEEE 14-bus and IEEE 118-bus test system.
{"title":"Optimal placement of phasor measurement units for multi-area observability","authors":"Bipasha Mallick, S. Chakrabarti","doi":"10.1109/ISET-INDIA.2011.6145372","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145372","url":null,"abstract":"This paper proposes a method for optimal placement of phasor measurement units (PMUs) for complete observability of power systems consisting of multiple areas. Binary integer programming is used to minimize the total number of PMUs and maximize the measurement redundancy at the boundary buses. The proposed method is applied to the IEEE 14-bus and IEEE 118-bus test system.","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":"125839939","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.2011.6145399
M. Govardhan, R. Roy
Due to ever increasing energy demand and expectation, the renewable distributed generation (DG) sources such as fuel cells, wind and solar has received a great attention. Microgrid can be viewed as a cluster of loads and parallel DG units installed at consumer's sites. Microgrid has remained as promising research area for many researchers due to many reasons. This paper presents a critical survey on some of the key issues of microgrid operating in grid connected and islanding mode of operation.
{"title":"Notice of Violation of IEEE Publication PrinciplesA review on key issues of microgrid","authors":"M. Govardhan, R. Roy","doi":"10.1109/ISET-INDIA.2011.6145399","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145399","url":null,"abstract":"Due to ever increasing energy demand and expectation, the renewable distributed generation (DG) sources such as fuel cells, wind and solar has received a great attention. Microgrid can be viewed as a cluster of loads and parallel DG units installed at consumer's sites. Microgrid has remained as promising research area for many researchers due to many reasons. This paper presents a critical survey on some of the key issues of microgrid operating in grid connected and islanding mode of operation.","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":"125916432","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.2011.6145402
G. Kartheek
This paper presents a new technique named Phasor Relativity based Mathematical Technique (PRM Technique) for coordinated automatic voltage control of the power system for enhanced voltage stability. The PRM control system is implemented on standard IEEE 14 bus system and an equivalent South Indian EHV system and results are presented for three different cases. The first case is the system with no control of reactive power. The second case is system with shunt reactors permanently connected while coordinated voltage control is present only at generators, tap changers and switched shunt capacitors. In the third case a new variable reactive power device called Controlled Shunt Reactor (CSR) is introduced in the place of fixed reactors and the same control strategy is implemented. All the cases are studied and compared to analyze the advantages of the CSR implementation in EHV systems. While CSR can provide variable reactive power support independently based on prevailing local voltages, the implementation of coordinated control provides additional system security and optimum operation. PRM control system with PMU technology can be proposed as a good smart grid technology.
{"title":"An improved system operation for better voltage stability and reduced losses","authors":"G. Kartheek","doi":"10.1109/ISET-INDIA.2011.6145402","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145402","url":null,"abstract":"This paper presents a new technique named Phasor Relativity based Mathematical Technique (PRM Technique) for coordinated automatic voltage control of the power system for enhanced voltage stability. The PRM control system is implemented on standard IEEE 14 bus system and an equivalent South Indian EHV system and results are presented for three different cases. The first case is the system with no control of reactive power. The second case is system with shunt reactors permanently connected while coordinated voltage control is present only at generators, tap changers and switched shunt capacitors. In the third case a new variable reactive power device called Controlled Shunt Reactor (CSR) is introduced in the place of fixed reactors and the same control strategy is implemented. All the cases are studied and compared to analyze the advantages of the CSR implementation in EHV systems. While CSR can provide variable reactive power support independently based on prevailing local voltages, the implementation of coordinated control provides additional system security and optimum operation. PRM control system with PMU technology can be proposed as a good smart grid technology.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"707 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":"122975052","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.2011.6145369
H. K. Nunna, S. Doolla
The mismatch between supply and demand in microgrids can be overcome by effectively utilizing distributed energy resources and/or encouraging demand side management. Demand response is one of the popular techniques to demand side management. In this paper an agent based architecture to simulate virtual markets enabling customers of the market to participate in demand response and trade power using intelligent trading strategy which makes the market more realistic and microgrids smarter is proposed. The proposed concept is verified on a system with two microgrids. The proposed MAS is developed using Java Application Development (JADE) framework.
{"title":"Demand response in smart microgrids","authors":"H. K. Nunna, S. Doolla","doi":"10.1109/ISET-INDIA.2011.6145369","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145369","url":null,"abstract":"The mismatch between supply and demand in microgrids can be overcome by effectively utilizing distributed energy resources and/or encouraging demand side management. Demand response is one of the popular techniques to demand side management. In this paper an agent based architecture to simulate virtual markets enabling customers of the market to participate in demand response and trade power using intelligent trading strategy which makes the market more realistic and microgrids smarter is proposed. The proposed concept is verified on a system with two microgrids. The proposed MAS is developed using Java Application Development (JADE) framework.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"5 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":"123266861","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.2011.6145345
S. H. Elyas, Sogol Babaeinejad Sarookolaee, Asghar Akbari Foroud
This paper proposes a novel approach for maintenance scheduling of generation units in a competitive environment. In the restructured power systems, the objective function of the generation units is to maximize their benefit. In addition, the aim of the Independent System Operator (ISO) is to maximize the reliability throughout the year as much as possible. The main contribution of this paper is considering the condition of demand side in the Maintenance Scheduling (MS) of generation units and scheduling the outage windows of generation units to attain maximum Annual Social Welfare (ASW). In this scheme, unit maintenance scheduling is considered as a single-stage process instead of a repetitive and multi-stage process and authority of maintenance scheduling has been granted to the ISO. Broadly defined, independent operator system tries to maximize both ASW and units' annual benefit. This method is tested in bilateral energy market and the IEEE-RTS system is used as a system test to demonstrate the efficiency of proposed method. In this paper CLONAL Selection Algorithm is applied for finding the optimum maintenance scheduling of generation units.
{"title":"A novel approach for maintenance scheduling of generation units in restructured power system","authors":"S. H. Elyas, Sogol Babaeinejad Sarookolaee, Asghar Akbari Foroud","doi":"10.1109/ISET-INDIA.2011.6145345","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145345","url":null,"abstract":"This paper proposes a novel approach for maintenance scheduling of generation units in a competitive environment. In the restructured power systems, the objective function of the generation units is to maximize their benefit. In addition, the aim of the Independent System Operator (ISO) is to maximize the reliability throughout the year as much as possible. The main contribution of this paper is considering the condition of demand side in the Maintenance Scheduling (MS) of generation units and scheduling the outage windows of generation units to attain maximum Annual Social Welfare (ASW). In this scheme, unit maintenance scheduling is considered as a single-stage process instead of a repetitive and multi-stage process and authority of maintenance scheduling has been granted to the ISO. Broadly defined, independent operator system tries to maximize both ASW and units' annual benefit. This method is tested in bilateral energy market and the IEEE-RTS system is used as a system test to demonstrate the efficiency of proposed method. In this paper CLONAL Selection Algorithm is applied for finding the optimum maintenance scheduling of generation units.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"70 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":"126772622","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.2011.6145373
R. Sheeba, M. Jayaraju, Muhammed Mansoor.O, T. N. Shanavas, K. Sundareswaran
In this paper, a stochastic search technique, namely Particle Swarm Optimization (PSO) is used to determine the optimal locations of two Static Var Compensators (SVCs) in an IEEE 14-bus system. Static Var compensators (SVC) are the most widely used shunt FACTS devices within power networks because of their smaller costs and significant system enhancements. Appeared about two decades ago, the SVC is mainly installed for voltage support and furthermore, when installed in a proper location, it can reduce the power loss. Here the problem is framed as an optimization task and the optimal locations of SVC are identified using the novel technique. The efficacy of the new algorithm is tested with extensive computer simulations and further compared with Genetic Algorithm (GA) based approach. The performance analysis is done through extensive simulations and shows that the proposed dispensation is on a par with existing techniques.
{"title":"Identification of optimal location of SVC through artificial intelligence techniques","authors":"R. Sheeba, M. Jayaraju, Muhammed Mansoor.O, T. N. Shanavas, K. Sundareswaran","doi":"10.1109/ISET-INDIA.2011.6145373","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145373","url":null,"abstract":"In this paper, a stochastic search technique, namely Particle Swarm Optimization (PSO) is used to determine the optimal locations of two Static Var Compensators (SVCs) in an IEEE 14-bus system. Static Var compensators (SVC) are the most widely used shunt FACTS devices within power networks because of their smaller costs and significant system enhancements. Appeared about two decades ago, the SVC is mainly installed for voltage support and furthermore, when installed in a proper location, it can reduce the power loss. Here the problem is framed as an optimization task and the optimal locations of SVC are identified using the novel technique. The efficacy of the new algorithm is tested with extensive computer simulations and further compared with Genetic Algorithm (GA) based approach. The performance analysis is done through extensive simulations and shows that the proposed dispensation is on a par with existing techniques.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"33 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":"127402514","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.2011.6145361
P. Thomas, P. Balakrishnan
A smart grid comprises of several genres of generating units; DG sets, wind turbines, solar plants and the like. Depending on the contingent power situation at any given time, it is expedient on the part of the system operator to extract optimum generation from all the units. Unit Commitment (UC) techniques can be applied in such a situation. Each of these units has associated variables like continuous ratings, start-up and shut-down characteristics, failure and repair rates, reliability indices etc. UC has been explored in depth for many years. Its application to smart grids is complex owing to the disparate characteristics of the different power plants within the smart grid. It is proposed to reduce the complexity by introducing redundant state analysis. It weeds out the redundant states that arise by the combination of failures and repairs on this pool of machines. It is based on the concept of sequential machines in the context of digital electronics.
{"title":"Reliability analysis of smart-grid generation pools","authors":"P. Thomas, P. Balakrishnan","doi":"10.1109/ISET-INDIA.2011.6145361","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145361","url":null,"abstract":"A smart grid comprises of several genres of generating units; DG sets, wind turbines, solar plants and the like. Depending on the contingent power situation at any given time, it is expedient on the part of the system operator to extract optimum generation from all the units. Unit Commitment (UC) techniques can be applied in such a situation. Each of these units has associated variables like continuous ratings, start-up and shut-down characteristics, failure and repair rates, reliability indices etc. UC has been explored in depth for many years. Its application to smart grids is complex owing to the disparate characteristics of the different power plants within the smart grid. It is proposed to reduce the complexity by introducing redundant state analysis. It weeds out the redundant states that arise by the combination of failures and repairs on this pool of machines. It is based on the concept of sequential machines in the context of digital electronics.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"8 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":"130238982","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.2011.6145363
A. Babu, S. Ashok, R. Sreeram Kumar
Increased demand for non-polluting mechanized transportation has revived the interest in the use of electric power for personal transportation and also reduced reliance on petrol or diesel driven automobiles. Moreover the fast depletion rate of petroleum & such conventional energy resources have forced mankind to lay much emphasis on the concept of Energy Conservation. This paper makes an effort to divert the attention of mankind more in this direction. A low cost alternative to an automobile is a bicycle. However, the use of bicycles has been limited to very short trips or as a recreational activity. This paper presents preliminary design aspects and simulation analysis for a Fuzzy Logic Controlled Hybrid Bicycle.
{"title":"Priliminary design considerations towards building of a hybrid electric bicycle","authors":"A. Babu, S. Ashok, R. Sreeram Kumar","doi":"10.1109/ISET-INDIA.2011.6145363","DOIUrl":"https://doi.org/10.1109/ISET-INDIA.2011.6145363","url":null,"abstract":"Increased demand for non-polluting mechanized transportation has revived the interest in the use of electric power for personal transportation and also reduced reliance on petrol or diesel driven automobiles. Moreover the fast depletion rate of petroleum & such conventional energy resources have forced mankind to lay much emphasis on the concept of Energy Conservation. This paper makes an effort to divert the attention of mankind more in this direction. A low cost alternative to an automobile is a bicycle. However, the use of bicycles has been limited to very short trips or as a recreational activity. This paper presents preliminary design aspects and simulation analysis for a Fuzzy Logic Controlled Hybrid Bicycle.","PeriodicalId":265646,"journal":{"name":"ISGT2011-India","volume":"63 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":"122810994","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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