Pub Date : 2002-07-25DOI: 10.1109/PESS.2002.1043238
M. Akizuki, O. Fujii, S. Ito, T. Irie, S. Nishimura
Insulator contamination is one of many serious problems for power systems. Outages due to insulator contamination flashover may affect a wide area and continue for a long time. Also, the corona noise causes radio and TV interference. Therefore, efforts have been made by many around the world to prevent such phenomena. Presently, fog type and semi-conducting glaze insulators have been developed, and successfully used. However, the former cannot suppress the corona and the latter has a subject to study from the viewpoint of thermal stability in heavy contamination conditions. A new concept insulator, with a stress graded zone on the bottom surface, has been studied. It has been determined that a dry band is not formed on this stress graded zone and a long dry band is formed at the first rib. This means the insulator has a high discharge starting voltage and high contamination withstand voltage.
{"title":"A study on anti-contamination design of suspension insulators-a stress grading insulator","authors":"M. Akizuki, O. Fujii, S. Ito, T. Irie, S. Nishimura","doi":"10.1109/PESS.2002.1043238","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043238","url":null,"abstract":"Insulator contamination is one of many serious problems for power systems. Outages due to insulator contamination flashover may affect a wide area and continue for a long time. Also, the corona noise causes radio and TV interference. Therefore, efforts have been made by many around the world to prevent such phenomena. Presently, fog type and semi-conducting glaze insulators have been developed, and successfully used. However, the former cannot suppress the corona and the latter has a subject to study from the viewpoint of thermal stability in heavy contamination conditions. A new concept insulator, with a stress graded zone on the bottom surface, has been studied. It has been determined that a dry band is not formed on this stress graded zone and a long dry band is formed at the first rib. This means the insulator has a high discharge starting voltage and high contamination withstand voltage.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115795146","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043498
T. Kumai, H. Nakabayashi, Y. Hirata, M. Takahashi, K. Terai, T. Kaminishi, K. Uehara
The optical current transformers (OCTs) using silica optical fiber as Faraday sensor were manufactured and tested in the field (275 kV substation) for 2 years to confirm their long-term reliability. Regarding the initial performance the current characteristic or the ratio error of the OCT for measurement satisfied the Japanese Electrotechnical Committee (JEC)-1201 class 1PS and that of the OCT for protection satisfied class 1T in the range from -20/spl deg/C to 55/spl deg/C. Regarding the field performance the ratio error of the OCT for measurement was stable within /spl plusmn/1% for 2 years. The current characteristic of the ratio error of the OCT for measurement satisfied class 1PS and a good result was also obtained for the OCT for protection. Also the OCTs measured accurately transient current that arose from a fault in the system. Therefor we confirm the long-term reliability of the OCT in the field through the field trial.
{"title":"Field trial of optical current transformer using optical fiber as Faraday sensor","authors":"T. Kumai, H. Nakabayashi, Y. Hirata, M. Takahashi, K. Terai, T. Kaminishi, K. Uehara","doi":"10.1109/PESS.2002.1043498","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043498","url":null,"abstract":"The optical current transformers (OCTs) using silica optical fiber as Faraday sensor were manufactured and tested in the field (275 kV substation) for 2 years to confirm their long-term reliability. Regarding the initial performance the current characteristic or the ratio error of the OCT for measurement satisfied the Japanese Electrotechnical Committee (JEC)-1201 class 1PS and that of the OCT for protection satisfied class 1T in the range from -20/spl deg/C to 55/spl deg/C. Regarding the field performance the ratio error of the OCT for measurement was stable within /spl plusmn/1% for 2 years. The current characteristic of the ratio error of the OCT for measurement satisfied class 1PS and a good result was also obtained for the OCT for protection. Also the OCTs measured accurately transient current that arose from a fault in the system. Therefor we confirm the long-term reliability of the OCT in the field through the field trial.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132463308","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043502
E. Gunther, M. McGranaghan
The definitions and formulas used today for common power system measures such as active, reactive, and apparent power have been in use since the 1940's. When these definitions were developed, loads were dominated by motors, lighting and other linear loads. Simplifications in calculations could then be made by taking advantage of the assumption of relatively balanced and non-distorted voltages and currents. Times have changed. Power electronic devices such as computer power supplies, phase controlled rectifiers, static VAr systems, cycloconverters, and other nonlinear, harmonic producing loads dominate today's loads. Also loads are more dense in commercial environments and due to the increased loads being added in an unplanned fashion in individual office environments, the assumptions regarding balanced loads are less valid than before. This paper summarizes how the new IEEE 1459 Trial-Use Standard addresses these issues with mathematically rigorous, yet useful and often intuitive definitions for power related quantities under sinusoidal, nonsinusoidal, balanced or unbalanced conditions.
{"title":"Power measurements in distorted and unbalanced conditions-an overview of IEEE Trial-Use Standard 1459-2000","authors":"E. Gunther, M. McGranaghan","doi":"10.1109/PESS.2002.1043502","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043502","url":null,"abstract":"The definitions and formulas used today for common power system measures such as active, reactive, and apparent power have been in use since the 1940's. When these definitions were developed, loads were dominated by motors, lighting and other linear loads. Simplifications in calculations could then be made by taking advantage of the assumption of relatively balanced and non-distorted voltages and currents. Times have changed. Power electronic devices such as computer power supplies, phase controlled rectifiers, static VAr systems, cycloconverters, and other nonlinear, harmonic producing loads dominate today's loads. Also loads are more dense in commercial environments and due to the increased loads being added in an unplanned fashion in individual office environments, the assumptions regarding balanced loads are less valid than before. This paper summarizes how the new IEEE 1459 Trial-Use Standard addresses these issues with mathematically rigorous, yet useful and often intuitive definitions for power related quantities under sinusoidal, nonsinusoidal, balanced or unbalanced conditions.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131797866","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043598
Xingwang Ma, D.I. Sun, A. Ott
This paper introduces the fundamental features of the financial transmission rights (FTR) auction market and the implementation of the market clearing system in PJM. With the FTR auction market, PJM electricity market participants can more readily buy or sell FTRs to hedge their financial exposure to price risks caused by transmission congestion which is inherent to the LMP based market mechanism. The FTR Auction market bid-clearing system follows a rigorous optimization-based framework and has the capability to handle various types of sophisticated security constraints, such as reactive transfer limits and contingency constraints. Numerical examples, including the one using the PJM network model, are included to demonstrate the various aspects of the FTR auction mechanism.
{"title":"Implementation of the PJM financial transmission rights auction market system","authors":"Xingwang Ma, D.I. Sun, A. Ott","doi":"10.1109/PESS.2002.1043598","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043598","url":null,"abstract":"This paper introduces the fundamental features of the financial transmission rights (FTR) auction market and the implementation of the market clearing system in PJM. With the FTR auction market, PJM electricity market participants can more readily buy or sell FTRs to hedge their financial exposure to price risks caused by transmission congestion which is inherent to the LMP based market mechanism. The FTR Auction market bid-clearing system follows a rigorous optimization-based framework and has the capability to handle various types of sophisticated security constraints, such as reactive transfer limits and contingency constraints. Numerical examples, including the one using the PJM network model, are included to demonstrate the various aspects of the FTR auction mechanism.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130824211","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043299
M. Kezunovic, C. Nail, Z. Ren, D. Sevcik, J. Lucey, W. Cook, E. Koch
The automated circuit breaker diagnostic system described in this paper is an extension of the widely used portable circuit breaker testing device concept. The testing devices can be connected to the circuit breaker's control circuit to record analog and digital signals. The automated system consists of a signal processing module and an expert system module. The two modules process the voltage and current signals recorded by the testing device, diagnose and report any abnormalities that are discovered. The paper describes the system requirements, the implementation of the two system modules, and provides an example that demonstrates the entire process. Real data recorded in a substation has been used to test the system.
{"title":"Automated circuit breaker monitoring and analysis","authors":"M. Kezunovic, C. Nail, Z. Ren, D. Sevcik, J. Lucey, W. Cook, E. Koch","doi":"10.1109/PESS.2002.1043299","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043299","url":null,"abstract":"The automated circuit breaker diagnostic system described in this paper is an extension of the widely used portable circuit breaker testing device concept. The testing devices can be connected to the circuit breaker's control circuit to record analog and digital signals. The automated system consists of a signal processing module and an expert system module. The two modules process the voltage and current signals recorded by the testing device, diagnose and report any abnormalities that are discovered. The paper describes the system requirements, the implementation of the two system modules, and provides an example that demonstrates the entire process. Real data recorded in a substation has been used to test the system.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133539609","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043227
C. Lewis
The ALSTOM Advanced Induction Motor has evolved over a period of around 15 years, during which time function and performance have steadily improved. In the electric warship, compactness of the propulsion motor is important, but so also must be reliability, structureborne noise signature, and shock withstand ability. This has been achieved in the Advanced Induction Motor through optimization of the electromagnetic design and material properties to suit the operating conditions of a propulsion motor. One of the advantages of an induction motor is its mechanical simplicity. This leads to not only to inherent reliability, but also to simpler design for shock requirements. Through careful motor and system design, it has been possible reduce structureborne noise signatures to levels that permit hard mounting of the motor to the hull of a surface combatant. The paper reviews the evolution of the Advanced Induction Motor from industrial induction motors, and the considerations necessary to achieve low noise signature and shock requirements.
{"title":"The Advanced Induction Motor","authors":"C. Lewis","doi":"10.1109/PESS.2002.1043227","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043227","url":null,"abstract":"The ALSTOM Advanced Induction Motor has evolved over a period of around 15 years, during which time function and performance have steadily improved. In the electric warship, compactness of the propulsion motor is important, but so also must be reliability, structureborne noise signature, and shock withstand ability. This has been achieved in the Advanced Induction Motor through optimization of the electromagnetic design and material properties to suit the operating conditions of a propulsion motor. One of the advantages of an induction motor is its mechanical simplicity. This leads to not only to inherent reliability, but also to simpler design for shock requirements. Through careful motor and system design, it has been possible reduce structureborne noise signatures to levels that permit hard mounting of the motor to the hull of a surface combatant. The paper reviews the evolution of the Advanced Induction Motor from industrial induction motors, and the considerations necessary to achieve low noise signature and shock requirements.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127844476","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043486
R. Abbott
Utility power lines serving as a communications medium is an idea that is probably as old as the existence of the power lines themselves. It has been done for years. Several of the most commercially and technically successful AMR systems in the last 20 years are based upon power line communications (PLC). One contribution this paper seeks to make to the industry is to set forth a context or framework against which various PLC systems may be characterized.
{"title":"High speed power line communications","authors":"R. Abbott","doi":"10.1109/PESS.2002.1043486","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043486","url":null,"abstract":"Utility power lines serving as a communications medium is an idea that is probably as old as the existence of the power lines themselves. It has been done for years. Several of the most commercially and technically successful AMR systems in the last 20 years are based upon power line communications (PLC). One contribution this paper seeks to make to the industry is to set forth a context or framework against which various PLC systems may be characterized.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115511061","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043402
J.D.F. McDonald, T. K. Saha
This paper presents the development of a method for quantitatively determining the potential impact that the design of a single generator may have upon the performance of power system under fault conditions. Initially it is illustrated that the impact that a single generator may have on network fault behaviour is limited by the configuration of the existing network to which the new generator is connected. These constraints are then used to develop a quantitative measure of variability in network-wide fault currents and the subsequent voltage disturbances that can be produced under balanced fault conditions by changing the design of a new generator, irrespective of its point of connection. Finally comparisons with the observed variation in network fault behaviour obtained from the simulation in PSS/E of a realistic 600-bus transmission network are used to demonstrate the technique's apparent effectiveness.
{"title":"Development of a technique for calculation of the influence of generator design on power system balanced fault behaviour","authors":"J.D.F. McDonald, T. K. Saha","doi":"10.1109/PESS.2002.1043402","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043402","url":null,"abstract":"This paper presents the development of a method for quantitatively determining the potential impact that the design of a single generator may have upon the performance of power system under fault conditions. Initially it is illustrated that the impact that a single generator may have on network fault behaviour is limited by the configuration of the existing network to which the new generator is connected. These constraints are then used to develop a quantitative measure of variability in network-wide fault currents and the subsequent voltage disturbances that can be produced under balanced fault conditions by changing the design of a new generator, irrespective of its point of connection. Finally comparisons with the observed variation in network fault behaviour obtained from the simulation in PSS/E of a realistic 600-bus transmission network are used to demonstrate the technique's apparent effectiveness.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115624682","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043171
M. Begovic
From small initiatives targeting residential customers for small installations to big projects, green programs are becoming familiar terms to customers, and many believe that such programs can ultimately make a difference in global energy portfolio. The purpose of the presentation is to offer some rationale for marketing of green power, provide a brief overview of some of the existing efforts in the United States and abroad, and attempt to identify the conditions and future trends for survival of renewable energy in the energy marketplace.
{"title":"Sustainable energy development: incentive programs","authors":"M. Begovic","doi":"10.1109/PESS.2002.1043171","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043171","url":null,"abstract":"From small initiatives targeting residential customers for small installations to big projects, green programs are becoming familiar terms to customers, and many believe that such programs can ultimately make a difference in global energy portfolio. The purpose of the presentation is to offer some rationale for marketing of green power, provide a brief overview of some of the existing efforts in the United States and abroad, and attempt to identify the conditions and future trends for survival of renewable energy in the energy marketplace.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115905255","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 : 2002-07-25DOI: 10.1109/PESS.2002.1043622
B. Townsend, W. Rosehart
As North American centers grow larger there has been a trend towards building bigger and more efficient generators. However, it is becoming more important that new power sources adhere to society's demands for cleaner energy, as awareness of environment impact has increased. Therefore, we must be prepared, in some cases, to move away from traditional forms of generation and adopt plans to use the abundance of the planet's renewable energy resources. One of the most promising sources of renewable energy is wind power. This form of energy is widely used in Europe, however not enough is being done in North America, particularly in regions of high wind. This paper studies the feasibility of constructing a wind generating facility in the Medicine Hat, Alberta region in order to meet the city's growing energy needs. A final recommendation will be made about the feasibility of such an initiative.
{"title":"Feasibility of a wind-based generating facility in Medicine Hat, Alberta","authors":"B. Townsend, W. Rosehart","doi":"10.1109/PESS.2002.1043622","DOIUrl":"https://doi.org/10.1109/PESS.2002.1043622","url":null,"abstract":"As North American centers grow larger there has been a trend towards building bigger and more efficient generators. However, it is becoming more important that new power sources adhere to society's demands for cleaner energy, as awareness of environment impact has increased. Therefore, we must be prepared, in some cases, to move away from traditional forms of generation and adopt plans to use the abundance of the planet's renewable energy resources. One of the most promising sources of renewable energy is wind power. This form of energy is widely used in Europe, however not enough is being done in North America, particularly in regions of high wind. This paper studies the feasibility of constructing a wind generating facility in the Medicine Hat, Alberta region in order to meet the city's growing energy needs. A final recommendation will be made about the feasibility of such an initiative.","PeriodicalId":117177,"journal":{"name":"IEEE Power Engineering Society Summer Meeting,","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114483483","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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