Pub Date : 2002-08-07DOI: 10.1109/PESW.2002.985036
Fubin Liu, Y. Li, Y. Ni, G. Tang, N. Leeprechanon
Security in power systems refers to the ability of the system to withstand imminent disturbances (contingencies). Maintaining security is an issue that must be addressed at the system level. Although the power industry is undergoing restructuring process worldwide, pricing for security is one of problems remaining unresolved. As risk assessment technology has been developed very quickly, with the application of both it and economical theory, the paper suggests an approach to solve the above problem. Therefore, the security of power systems, risk assessment and economical theory are combined to give a mathematical model for security price in the new deregulated environment to trade-off technology and economy.
{"title":"A novel strategy of pricing for steady-state security in deregulated environment","authors":"Fubin Liu, Y. Li, Y. Ni, G. Tang, N. Leeprechanon","doi":"10.1109/PESW.2002.985036","DOIUrl":"https://doi.org/10.1109/PESW.2002.985036","url":null,"abstract":"Security in power systems refers to the ability of the system to withstand imminent disturbances (contingencies). Maintaining security is an issue that must be addressed at the system level. Although the power industry is undergoing restructuring process worldwide, pricing for security is one of problems remaining unresolved. As risk assessment technology has been developed very quickly, with the application of both it and economical theory, the paper suggests an approach to solve the above problem. Therefore, the security of power systems, risk assessment and economical theory are combined to give a mathematical model for security price in the new deregulated environment to trade-off technology and economy.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114823681","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 : 2002-08-07DOI: 10.1109/PESW.2002.985151
S. Zhong, A. Abur
This paper investigates the errors introduced in the positive sequence state estimation due to the usual assumptions of having fully balanced bus loads/generations and continuously transposed transmission lines. A three-phase state estimator is first developed in order to verify the actual error free solution in the phase coordinates. Then, several tests are conducted using different assumptions regarding the availability of single and multi-phase measurements. It is demonstrated that incomplete metering of three-phase system quantities may lead to significant errors in the positive sequence state estimates for certain cases. Such cases may also lead to incorrect bad data detection and elimination, further deteriorating the quality of the state estimate. IEEE 30 bus test system is used to illustrate these cases.
{"title":"Effects of nontransposed lines and unbalanced loads on state estimation","authors":"S. Zhong, A. Abur","doi":"10.1109/PESW.2002.985151","DOIUrl":"https://doi.org/10.1109/PESW.2002.985151","url":null,"abstract":"This paper investigates the errors introduced in the positive sequence state estimation due to the usual assumptions of having fully balanced bus loads/generations and continuously transposed transmission lines. A three-phase state estimator is first developed in order to verify the actual error free solution in the phase coordinates. Then, several tests are conducted using different assumptions regarding the availability of single and multi-phase measurements. It is demonstrated that incomplete metering of three-phase system quantities may lead to significant errors in the positive sequence state estimates for certain cases. Such cases may also lead to incorrect bad data detection and elimination, further deteriorating the quality of the state estimate. IEEE 30 bus test system is used to illustrate these cases.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124305721","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 : 2002-08-07DOI: 10.1109/PESW.2002.985157
M. Henderson, R. Berryman, W. Coste
Summary form only given, as follows. Conservation and load response programs can reduce the cost of electric energy that includes congestion as well as ancillary services. The provision of price elasticity on the demand side of the equation is particularly important to ensure robust markets. ISO New England has encouraged demand responses through the provision of market signals and the filing of a load response program. This paper provides a summary of many conservation and load response issues, a methodology for determining the benefits of a demand response, a summary of the impacts of conservation and load responses for New England and a description of the load response program for the Summer 2002.
{"title":"Impact of conservation and a load response program","authors":"M. Henderson, R. Berryman, W. Coste","doi":"10.1109/PESW.2002.985157","DOIUrl":"https://doi.org/10.1109/PESW.2002.985157","url":null,"abstract":"Summary form only given, as follows. Conservation and load response programs can reduce the cost of electric energy that includes congestion as well as ancillary services. The provision of price elasticity on the demand side of the equation is particularly important to ensure robust markets. ISO New England has encouraged demand responses through the provision of market signals and the filing of a load response program. This paper provides a summary of many conservation and load response issues, a methodology for determining the benefits of a demand response, a summary of the impacts of conservation and load responses for New England and a description of the load response program for the Summer 2002.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124320209","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 : 2002-08-07DOI: 10.1109/PESW.2002.985273
A. Andreoiu, Kankar Bhattacharya
The paper presents the design of a genetic algorithm based power system stabilizer (PSS) for multi-machine power systems. The proposed method makes use of the classical parameter tuning approach based on Lyapunov's equations and integrates it within the genetic process. The search process provides a globally optimal set of PSS parameters for all generators simultaneously, and hence dispenses with the eigenvalue drift problems associated with sequential tuning methods. Robustness of the proposed PSS is ensured since the genetic algorithm uses a wide operating horizon as its search domain and dynamic performance with the proposed PSS shows improved results, over conventionally tuned PSS, particularly during heavy load conditions.
{"title":"Lyapunov's method based genetic algorithm for multi-machine PSS tuning","authors":"A. Andreoiu, Kankar Bhattacharya","doi":"10.1109/PESW.2002.985273","DOIUrl":"https://doi.org/10.1109/PESW.2002.985273","url":null,"abstract":"The paper presents the design of a genetic algorithm based power system stabilizer (PSS) for multi-machine power systems. The proposed method makes use of the classical parameter tuning approach based on Lyapunov's equations and integrates it within the genetic process. The search process provides a globally optimal set of PSS parameters for all generators simultaneously, and hence dispenses with the eigenvalue drift problems associated with sequential tuning methods. Robustness of the proposed PSS is ensured since the genetic algorithm uses a wide operating horizon as its search domain and dynamic performance with the proposed PSS shows improved results, over conventionally tuned PSS, particularly during heavy load conditions.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124085355","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 : 2002-08-07DOI: 10.1109/PESW.2002.985116
T. Ohtsuka, M. Matsuoka, T. Inaba
The lightning damage on low voltage power distribution systems is almost a burning of low voltage distribution equipment due to a flashover and arc dynamic or short circuit current. The lightning overvoltage causes a flashover in low voltage distribution equipment. After that, the flashover causes burning because of impressing the commercial frequency voltage. The authors conducted two kinds of experiments. The first was using low voltage distribution equipment. The second was using a real scale low voltage distribution line model. According to the first experiment, the authors suggest that the flashover current due to lightning overvoltage becomes 0 A at once when the flashover current switches to the arc dynamic current. In the second experiment, a lightning overvoltage causes burning of equipment on a low voltage power distribution system. As a result, it became possible to know the equipment burnt on a low voltage distribution system.
{"title":"Mechanism of lightning damage on low voltage distribution equipment due to arc current","authors":"T. Ohtsuka, M. Matsuoka, T. Inaba","doi":"10.1109/PESW.2002.985116","DOIUrl":"https://doi.org/10.1109/PESW.2002.985116","url":null,"abstract":"The lightning damage on low voltage power distribution systems is almost a burning of low voltage distribution equipment due to a flashover and arc dynamic or short circuit current. The lightning overvoltage causes a flashover in low voltage distribution equipment. After that, the flashover causes burning because of impressing the commercial frequency voltage. The authors conducted two kinds of experiments. The first was using low voltage distribution equipment. The second was using a real scale low voltage distribution line model. According to the first experiment, the authors suggest that the flashover current due to lightning overvoltage becomes 0 A at once when the flashover current switches to the arc dynamic current. In the second experiment, a lightning overvoltage causes burning of equipment on a low voltage power distribution system. As a result, it became possible to know the equipment burnt on a low voltage distribution system.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126238358","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 : 2002-08-07DOI: 10.1109/PESW.2002.985124
C. Rehtanz, J. Bertsch
When a major power system disturbance occurs, protection and control systems have to limit the impact, stop the degradation and restore the system to a normal state by appropriate remedial actions. Wide area measurement and protection systems limit the severity of disturbances by early recognition as well as proposition and execution of coordinated stabilizing actions. These systems complement classical protection and SCADA/EMS applications. This paper proposes a system design based on phasor measurement units, encouraging system protection schemes for frequency, small signal angle and voltage instability. The system is compared to classical protection and SCADA/EMS systems showing its benefits. A new algorithm for long-term voltage stability prediction is introduced using the proposed system setup.
{"title":"Wide area measurement and protection system for emergency voltage stability control","authors":"C. Rehtanz, J. Bertsch","doi":"10.1109/PESW.2002.985124","DOIUrl":"https://doi.org/10.1109/PESW.2002.985124","url":null,"abstract":"When a major power system disturbance occurs, protection and control systems have to limit the impact, stop the degradation and restore the system to a normal state by appropriate remedial actions. Wide area measurement and protection systems limit the severity of disturbances by early recognition as well as proposition and execution of coordinated stabilizing actions. These systems complement classical protection and SCADA/EMS applications. This paper proposes a system design based on phasor measurement units, encouraging system protection schemes for frequency, small signal angle and voltage instability. The system is compared to classical protection and SCADA/EMS systems showing its benefits. A new algorithm for long-term voltage stability prediction is introduced using the proposed system setup.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126496605","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 : 2002-08-07DOI: 10.1109/PESW.2002.985117
S. Jang, Kwang-Ho Kim
The islanding protection for distributed resources (DR) becomes an important and emerging issue in power system protection since the distributed resources installations are rapidly increasing and most of the installed systems are interconnected with distribution network. In order to avoid the negative impacts from islanding operations of DR to protection, operation, and management of distribution system, it is necessary to effectively detect the islanding operations of DR and disconnect it from distribution network rapidly. Generally, it is difficult to detect islanding operation by monitoring only single system parameter. This paper presents a new logic based islanding detection algorithm for distributed resources that is interconnected with distribution network. The proposed islanding detection algorithm utilizes four system parameters that include the conventionally used ones of voltage magnitude, phase, and frequency and the newly proposed one in this paper of total harmonic distortion (THD) of current. The method monitors changes in four parameters and detects the islanding operations by logical rules. The authors verified the efficiency of the proposed method using the radial distribution network of IEEE 34 bus model.
{"title":"Development of a logical rule-based islanding detection method for distributed resources","authors":"S. Jang, Kwang-Ho Kim","doi":"10.1109/PESW.2002.985117","DOIUrl":"https://doi.org/10.1109/PESW.2002.985117","url":null,"abstract":"The islanding protection for distributed resources (DR) becomes an important and emerging issue in power system protection since the distributed resources installations are rapidly increasing and most of the installed systems are interconnected with distribution network. In order to avoid the negative impacts from islanding operations of DR to protection, operation, and management of distribution system, it is necessary to effectively detect the islanding operations of DR and disconnect it from distribution network rapidly. Generally, it is difficult to detect islanding operation by monitoring only single system parameter. This paper presents a new logic based islanding detection algorithm for distributed resources that is interconnected with distribution network. The proposed islanding detection algorithm utilizes four system parameters that include the conventionally used ones of voltage magnitude, phase, and frequency and the newly proposed one in this paper of total harmonic distortion (THD) of current. The method monitors changes in four parameters and detects the islanding operations by logical rules. The authors verified the efficiency of the proposed method using the radial distribution network of IEEE 34 bus model.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121967629","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 : 2002-08-07DOI: 10.1109/PESW.2002.985228
P.S. Sensarma, M. Rahmani, A. Carvalho
This paper proposes a holistic approach to planning transmission networks. This is necessitated by the need for entrepreneurs to evaluate the costs and returns of a merchant transmission project, before committing actual investment. Most papers addressing this problem are probably limited in scope to subsets of the total gamut of relevant issues. Although some of the cost items, mentioned here, deal with average cost, the parametric approach, which is adopted here, enables easy introduction of stochastic variation on these mean values. Thus the proposed approach is amenable to a more thorough risk analysis. The entire problem is formulated as an optimization problem and solved using particle swarm optimization. The results of a few case studies are presented.
{"title":"A comprehensive method for optimal expansion planning using particle swarm optimization","authors":"P.S. Sensarma, M. Rahmani, A. Carvalho","doi":"10.1109/PESW.2002.985228","DOIUrl":"https://doi.org/10.1109/PESW.2002.985228","url":null,"abstract":"This paper proposes a holistic approach to planning transmission networks. This is necessitated by the need for entrepreneurs to evaluate the costs and returns of a merchant transmission project, before committing actual investment. Most papers addressing this problem are probably limited in scope to subsets of the total gamut of relevant issues. Although some of the cost items, mentioned here, deal with average cost, the parametric approach, which is adopted here, enables easy introduction of stochastic variation on these mean values. Thus the proposed approach is amenable to a more thorough risk analysis. The entire problem is formulated as an optimization problem and solved using particle swarm optimization. The results of a few case studies are presented.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132803300","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 : 2002-08-07DOI: 10.1109/PESW.2002.985005
G. Venkataramanan, M. Illindala
This paper discusses the issues related to the operation of a microgrid being called to feed reliable electric power to sensitive electrical loads. Challenges and solutions involved in terms maintaining adequate voltage quality and load tracking capabilities are discussed in the paper.
{"title":"Microgrids and sensitive loads","authors":"G. Venkataramanan, M. Illindala","doi":"10.1109/PESW.2002.985005","DOIUrl":"https://doi.org/10.1109/PESW.2002.985005","url":null,"abstract":"This paper discusses the issues related to the operation of a microgrid being called to feed reliable electric power to sensitive electrical loads. Challenges and solutions involved in terms maintaining adequate voltage quality and load tracking capabilities are discussed in the paper.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130717166","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 : 2002-08-07DOI: 10.1109/PESW.2002.984986
Zhang Tao, M. Nakamura, H. Hatazaki
Proper maintenance scheduling of equipment can keep high availability of power system, avoid the damage of failure and reduce the waste of cost. In the authors' research, facing up to the difficulty of short of data for maintenance scheduling in the electric power industry, element availabilities with various kinds of maintenance intervals can be calculated by the dimensional reduction method. Considering the system availability, maintenance scheduling of equipment can be optimized by element maintenance interval adjustment. In this paper, sacrificing system availability within allowance and keeping system availability during the process of optimizing maintenance scheduling was discussed in detail. There effectiveness was verified by the proper maintenance scheduling for the electrical elements of thermal power stations.
{"title":"Optimizing maintenance scheduling of equipment by element maintenance interval adjustment considering system availability","authors":"Zhang Tao, M. Nakamura, H. Hatazaki","doi":"10.1109/PESW.2002.984986","DOIUrl":"https://doi.org/10.1109/PESW.2002.984986","url":null,"abstract":"Proper maintenance scheduling of equipment can keep high availability of power system, avoid the damage of failure and reduce the waste of cost. In the authors' research, facing up to the difficulty of short of data for maintenance scheduling in the electric power industry, element availabilities with various kinds of maintenance intervals can be calculated by the dimensional reduction method. Considering the system availability, maintenance scheduling of equipment can be optimized by element maintenance interval adjustment. In this paper, sacrificing system availability within allowance and keeping system availability during the process of optimizing maintenance scheduling was discussed in detail. There effectiveness was verified by the proper maintenance scheduling for the electrical elements of thermal power stations.","PeriodicalId":198760,"journal":{"name":"2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131005138","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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