Pub Date : 2001-07-15DOI: 10.1109/PESS.2001.970150
Xuechun Yu, M. Khammash, V. Vittal
Summary form only given as follows. This paper presents a systematic procedure for the synthesis of a supplementary damping controller (SDC) for static VAr compensators (SVC) in multimachine power systems. The robust performance in terms of the structured singular value (SSV or /spl mu/) is used as the measure of control performance. A wide range of operating conditions are used for testing. Simulation results on standard test systems show that the resulting SDC effectively enhances the damping of the interarea oscillations, providing robust stability and good performance characteristics both in frequency domain and in time domain.
{"title":"Robust design of a damping controller for static VAr compensators in power systems","authors":"Xuechun Yu, M. Khammash, V. Vittal","doi":"10.1109/PESS.2001.970150","DOIUrl":"https://doi.org/10.1109/PESS.2001.970150","url":null,"abstract":"Summary form only given as follows. This paper presents a systematic procedure for the synthesis of a supplementary damping controller (SDC) for static VAr compensators (SVC) in multimachine power systems. The robust performance in terms of the structured singular value (SSV or /spl mu/) is used as the measure of control performance. A wide range of operating conditions are used for testing. Simulation results on standard test systems show that the resulting SDC effectively enhances the damping of the interarea oscillations, providing robust stability and good performance characteristics both in frequency domain and in time domain.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124446555","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 : 2001-07-15DOI: 10.1109/PESS.2001.969984
F. Rossouw, H.J. Beukes
34% of the South African population is still without electricity. Most of these people stay in deep rural areas where the cost of electrification is very high. Radial lines are characteristic of rural networks and methods to stretch existing lines or constructing cost-effective new networks are of high priority. Cheap conductors with large voltage drops and voltage regulating network devices are on the forefront of research in rural electrification. Network devices are classified as one of four generic devices, namely shunt, series, series-shunt and in-line devices. The paper proposes a method in which all solutions to a specific voltage regulation problem can be evaluated to determine the best solution. The Cathedral Peak case study is presented as a working example.
{"title":"Compensator rating for radial distribution lines","authors":"F. Rossouw, H.J. Beukes","doi":"10.1109/PESS.2001.969984","DOIUrl":"https://doi.org/10.1109/PESS.2001.969984","url":null,"abstract":"34% of the South African population is still without electricity. Most of these people stay in deep rural areas where the cost of electrification is very high. Radial lines are characteristic of rural networks and methods to stretch existing lines or constructing cost-effective new networks are of high priority. Cheap conductors with large voltage drops and voltage regulating network devices are on the forefront of research in rural electrification. Network devices are classified as one of four generic devices, namely shunt, series, series-shunt and in-line devices. The paper proposes a method in which all solutions to a specific voltage regulation problem can be evaluated to determine the best solution. The Cathedral Peak case study is presented as a working example.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122154559","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 : 2001-07-15DOI: 10.1109/PESS.2001.970131
H. Maru, M. Farooque, J. Leitman
Worldwide demand for electricity has been growing rapidly. Recent rolling blackouts in California and anticipated power shortages in many regions have highlighted the urgent need for low-cost, efficient, and clean power. The demand for power can be fulfilled through traditional central power stations, or distributed generation at or near the customer site. Distributed power generation is being increasingly favored for high reliability, combined heat and power production, permitting, and other benefits. Direct carbonate fuel cells being developed by FuelCell Energy provide an attractive alternative for efficient, cost-effective and clean distributed generation. The technology has been verified in 250 kW size building block stacks and several commercial field trials have been planned for 2001. Manufacturing facilities and strategic alliances are also being developed. In parallel, at national and international level interconnection requirements, codes and standards are being developed to facilitate introduction of fuel cell power plants.
{"title":"Progress in direct carbonate fuel cell for distributed generation","authors":"H. Maru, M. Farooque, J. Leitman","doi":"10.1109/PESS.2001.970131","DOIUrl":"https://doi.org/10.1109/PESS.2001.970131","url":null,"abstract":"Worldwide demand for electricity has been growing rapidly. Recent rolling blackouts in California and anticipated power shortages in many regions have highlighted the urgent need for low-cost, efficient, and clean power. The demand for power can be fulfilled through traditional central power stations, or distributed generation at or near the customer site. Distributed power generation is being increasingly favored for high reliability, combined heat and power production, permitting, and other benefits. Direct carbonate fuel cells being developed by FuelCell Energy provide an attractive alternative for efficient, cost-effective and clean distributed generation. The technology has been verified in 250 kW size building block stacks and several commercial field trials have been planned for 2001. Manufacturing facilities and strategic alliances are also being developed. In parallel, at national and international level interconnection requirements, codes and standards are being developed to facilitate introduction of fuel cell power plants.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122177077","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 : 2001-07-15DOI: 10.1109/PESS.2001.970349
Zhiping Yang, C. Shen, L. Zhang, M. Crow, S. Atcitty
Summary form only given as follows. The integration of an energy storage system, such as battery energy storage (BESS), into a FACTS device can provide dynamic decentralized active power capabilities and much needed flexibility for mitigating transmission level power flow problems. This paper introduces an integrated StatCom/BESS for the improvement of dynamic and transient stability and transmission capability; compare the performance of the different FACTS/BESS combinations, and provide experimental verification of the proposed controls on a scaled StatCom/BESS system.
{"title":"Integration of a StatCom and battery energy storage","authors":"Zhiping Yang, C. Shen, L. Zhang, M. Crow, S. Atcitty","doi":"10.1109/PESS.2001.970349","DOIUrl":"https://doi.org/10.1109/PESS.2001.970349","url":null,"abstract":"Summary form only given as follows. The integration of an energy storage system, such as battery energy storage (BESS), into a FACTS device can provide dynamic decentralized active power capabilities and much needed flexibility for mitigating transmission level power flow problems. This paper introduces an integrated StatCom/BESS for the improvement of dynamic and transient stability and transmission capability; compare the performance of the different FACTS/BESS combinations, and provide experimental verification of the proposed controls on a scaled StatCom/BESS system.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131742696","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 : 2001-07-15DOI: 10.1109/PESS.2001.970258
Juhwan Jung, Chen-Ching Liu
Power systems can become vulnerable due to human errors, natural calamities, impacts of power markets, and cascading events caused by hidden failures of protective devices. The technologies of intelligent agents and multi-agent system are proposed for handling of complex, dynamic, and distributed systems. This paper reports a multi-agent system that provides preventive and corrective self-healing strategies to avoid catastrophic failures of a power system. This paper is focused on the agent technology and multi-agent system specifications.
{"title":"Multi-agent technology for vulnerability assessment and control","authors":"Juhwan Jung, Chen-Ching Liu","doi":"10.1109/PESS.2001.970258","DOIUrl":"https://doi.org/10.1109/PESS.2001.970258","url":null,"abstract":"Power systems can become vulnerable due to human errors, natural calamities, impacts of power markets, and cascading events caused by hidden failures of protective devices. The technologies of intelligent agents and multi-agent system are proposed for handling of complex, dynamic, and distributed systems. This paper reports a multi-agent system that provides preventive and corrective self-healing strategies to avoid catastrophic failures of a power system. This paper is focused on the agent technology and multi-agent system specifications.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131505919","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 : 2001-07-15DOI: 10.1109/PESS.2001.970163
L. Clarke
Summary form only given. The GIS in a utility is a major source of important information in the company, and often is, or should be, the master repository of the utility's facilities and equipment. The SCADA control room requires a particular view of the facilities, and therefore needs access to the GIS data. It is expensive to manually re-create the graphics and equipment definitions in the SCADA system, especially in a system subject to continual expansion, upgrades, and changes. Rather, a mechanism to easily and periodically move the information into the SCADA system and convert it to a suitable form, or in some other way make the GIS data available to the SCADA system, is needed. The operators often can benefit from being able to access the information about a specific piece of equipment, so providing a mechanism for the SCADA user interface to be able to query the GIS or AM/FM system for this information is valuable. This paper explores these issues, identify some possible solutions, and discuss one vendor's implementation that has attempted to solve these issues.
{"title":"Integrating GIS with high performance SCADA","authors":"L. Clarke","doi":"10.1109/PESS.2001.970163","DOIUrl":"https://doi.org/10.1109/PESS.2001.970163","url":null,"abstract":"Summary form only given. The GIS in a utility is a major source of important information in the company, and often is, or should be, the master repository of the utility's facilities and equipment. The SCADA control room requires a particular view of the facilities, and therefore needs access to the GIS data. It is expensive to manually re-create the graphics and equipment definitions in the SCADA system, especially in a system subject to continual expansion, upgrades, and changes. Rather, a mechanism to easily and periodically move the information into the SCADA system and convert it to a suitable form, or in some other way make the GIS data available to the SCADA system, is needed. The operators often can benefit from being able to access the information about a specific piece of equipment, so providing a mechanism for the SCADA user interface to be able to query the GIS or AM/FM system for this information is valuable. This paper explores these issues, identify some possible solutions, and discuss one vendor's implementation that has attempted to solve these issues.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132107965","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 : 2001-07-15DOI: 10.1109/PESS.2001.970338
Xiuli Wang, Xifan Wang, Yubin Mao
This paper presents an improved GA approach to optimal multistage transmission network planning. A fitness function including investment and overload constraint is constructed. The overload is checked by DC load flow. A concise codification model called redundant binary coded technique is proposed. By this technique the crossover operation can be executed inside the gene so that the re-combinatorial and search function of the crossover operator are well utilized. The simulated annealing selector is used to adjust the fitness function in the evolution process. Some improvements are employed to speed up the algorithm convergence such as keeping excellent seeds, mutation in pair, etc. Based on the proposed model, a computational program has been developed. Three case studies are applied to demonstrate the usefulness and effectiveness of the suggested multistage transmission network planning model.
{"title":"Improved genetic algorithm for optimal multistage transmission system planning","authors":"Xiuli Wang, Xifan Wang, Yubin Mao","doi":"10.1109/PESS.2001.970338","DOIUrl":"https://doi.org/10.1109/PESS.2001.970338","url":null,"abstract":"This paper presents an improved GA approach to optimal multistage transmission network planning. A fitness function including investment and overload constraint is constructed. The overload is checked by DC load flow. A concise codification model called redundant binary coded technique is proposed. By this technique the crossover operation can be executed inside the gene so that the re-combinatorial and search function of the crossover operator are well utilized. The simulated annealing selector is used to adjust the fitness function in the evolution process. Some improvements are employed to speed up the algorithm convergence such as keeping excellent seeds, mutation in pair, etc. Based on the proposed model, a computational program has been developed. Three case studies are applied to demonstrate the usefulness and effectiveness of the suggested multistage transmission network planning model.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"328 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122260162","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 : 2001-07-15DOI: 10.1109/PESS.2001.970224
D. Hur, Jong-keun Park, B.H. Kim, K. Son
This paper presents an algorithm for the parallel solution of the security constrained optimal power flow (SCOPF) problem in a decentralized framework, consisting of regions, using a price-based mechanism that models each region as an economic unit. We first solve the distributed optimal power flow (OPF) problem to determine the maximum secure simultaneous transfer capability of each tie-line between adjacent regions by taking only the security constraints imposed on the tie-lines into account. In this study, the line outage distribution factors (LODF) calculated at the current state are used to formulate the appended constraints. Once the secure transfer capability of each tie-line is determined, the maximum secure transfer capability of tie-lines joining two regions is solved in such a way that the transmission system can also stay within limits in the event of turning generation units off when they are not needed. A description on the inclusion of security constraints with distributed optimal power flow algorithm is given, followed by case studies for Korea power system.
{"title":"Security constrained optimal power flow for the evaluation of transmission capability on Korea electric power system","authors":"D. Hur, Jong-keun Park, B.H. Kim, K. Son","doi":"10.1109/PESS.2001.970224","DOIUrl":"https://doi.org/10.1109/PESS.2001.970224","url":null,"abstract":"This paper presents an algorithm for the parallel solution of the security constrained optimal power flow (SCOPF) problem in a decentralized framework, consisting of regions, using a price-based mechanism that models each region as an economic unit. We first solve the distributed optimal power flow (OPF) problem to determine the maximum secure simultaneous transfer capability of each tie-line between adjacent regions by taking only the security constraints imposed on the tie-lines into account. In this study, the line outage distribution factors (LODF) calculated at the current state are used to formulate the appended constraints. Once the secure transfer capability of each tie-line is determined, the maximum secure transfer capability of tie-lines joining two regions is solved in such a way that the transmission system can also stay within limits in the event of turning generation units off when they are not needed. A description on the inclusion of security constraints with distributed optimal power flow algorithm is given, followed by case studies for Korea power system.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115039066","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 : 2001-07-15DOI: 10.1109/PESS.2001.970108
J.B. Lee, C. Ha, C. Jung
This paper presents a digital distance relaying algorithm in combined transmission lines with underground power cables. When underground power cables are used as part of a transmission line, the design and setting of the protective relay will have to consider the different impedance characteristics because of the configuration characteristics of the cables. A power cable system consists of the conductor, a sheath, several kinds of joints, grounding types of such joints, cable covering protection units and grounding wires with resistance. Simulation for an actual complex transmission line with 154 kV XLPE cables was carried out to develop a correct distance relaying algorithm using modeling which was, in detail, established using EMTP and ATP Draw. This paper describes the accurate calculation algorithm of line impedance with a compensation factor at the relay point as well as a method to discriminate the fault section between both sections when a single line-to-ground fault occurs. Simulation results reveal that the accuracy of the line impedance obtained by the proposed algorithm has been increased compared with the impedance obtained using the general distance relaying algorithm.
{"title":"Development of digital distance relaying algorithm in combined transmission lines with underground power cables","authors":"J.B. Lee, C. Ha, C. Jung","doi":"10.1109/PESS.2001.970108","DOIUrl":"https://doi.org/10.1109/PESS.2001.970108","url":null,"abstract":"This paper presents a digital distance relaying algorithm in combined transmission lines with underground power cables. When underground power cables are used as part of a transmission line, the design and setting of the protective relay will have to consider the different impedance characteristics because of the configuration characteristics of the cables. A power cable system consists of the conductor, a sheath, several kinds of joints, grounding types of such joints, cable covering protection units and grounding wires with resistance. Simulation for an actual complex transmission line with 154 kV XLPE cables was carried out to develop a correct distance relaying algorithm using modeling which was, in detail, established using EMTP and ATP Draw. This paper describes the accurate calculation algorithm of line impedance with a compensation factor at the relay point as well as a method to discriminate the fault section between both sections when a single line-to-ground fault occurs. Simulation results reveal that the accuracy of the line impedance obtained by the proposed algorithm has been increased compared with the impedance obtained using the general distance relaying algorithm.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115648070","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 : 2001-07-15DOI: 10.1109/PESS.2001.970216
A. McEachern
Power quality monitoring is the process of gathering some data about voltages and currents; transporting that data to somewhere it will be useful; and converting that data into decision-making information. The author gives a brief history of the subject from the 1920s' development of a lightning strike recorder through to the 1960s' power quality monitors, the mid-1980s' graphic power quality monitors, and EPRI's Distribution Power Quality project in the 1990s. The future ideal power quality monitoring system is outlined.
{"title":"Roles of intelligent systems in power quality monitoring: past, present, and future","authors":"A. McEachern","doi":"10.1109/PESS.2001.970216","DOIUrl":"https://doi.org/10.1109/PESS.2001.970216","url":null,"abstract":"Power quality monitoring is the process of gathering some data about voltages and currents; transporting that data to somewhere it will be useful; and converting that data into decision-making information. The author gives a brief history of the subject from the 1920s' development of a lightning strike recorder through to the 1960s' power quality monitors, the mid-1980s' graphic power quality monitors, and EPRI's Distribution Power Quality project in the 1990s. The future ideal power quality monitoring system is outlined.","PeriodicalId":273578,"journal":{"name":"2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123494591","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：