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PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)最新文献

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Novel method of corrosion diagnosis for grounding grid 接地网腐蚀诊断新方法
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.898168
Jun Hu, R. Zeng, Jinliang He, Weimin Sun, Jinxia Yao, Q. Su
{"title":"Novel method of corrosion diagnosis for grounding grid","authors":"Jun Hu, R. Zeng, Jinliang He, Weimin Sun, Jinxia Yao, Q. Su","doi":"10.1109/ICPST.2000.898168","DOIUrl":"https://doi.org/10.1109/ICPST.2000.898168","url":null,"abstract":"The steel grounding grid buried in earth will corrode and become a hidden danger to the safety of the power system. It is difficult to get an accurate status of corroded ground grids with traditional methods. A novel method is proposed, by which the corrosion status of a grounding grid can be diagnosed from measured port resistances among the touchable down-lead conductors connected to the grounding grid. First, the mathematical relationship between the corrosion status of the grounding grid's all grounding conductors and the measured port resistances is deduced in detail based on circuit models and theory. Then, an appropriate mathematical model is discussed for practicable computation. The completed corrosion diagnosis system, including hardware device of data measurement, diagnosis and analysis software, is also introduced concisely. Finally, a field test report is provided to validate this new method.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127317225","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}
引用次数: 49
A probabilistic technique for the evaluation of transient recovery voltages across circuit breakers of series capacitor compensated transmission lines 一种评估串联电容补偿输电线路断路器瞬时恢复电压的概率技术
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.897134
S. Faried, S. Aboreshaid
{"title":"A probabilistic technique for the evaluation of transient recovery voltages across circuit breakers of series capacitor compensated transmission lines","authors":"S. Faried, S. Aboreshaid","doi":"10.1109/ICPST.2000.897134","DOIUrl":"https://doi.org/10.1109/ICPST.2000.897134","url":null,"abstract":"This paper presents a Monte Carlo based approach to evaluate of the maximum transient recovery voltages induced across circuit breaker poles during clearing a fault on a series capacitor compensated transmission line. In this context, investigations have been conducted on a sample power system model taking into consideration the uncertainty of several factors associated with the practical operation of a power system. A risk index that reflects the likelihood that the transient recovery voltage induced across a circuit breaker poles exceeds its design value is also presented.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128918745","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}
引用次数: 1
Study of coupled-nonlinearity and its control technique in modern power drive systems 现代动力传动系统中的耦合非线性及其控制技术研究
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900104
Jianguo Jiang, Weimin Xie, Hao Chen
{"title":"Study of coupled-nonlinearity and its control technique in modern power drive systems","authors":"Jianguo Jiang, Weimin Xie, Hao Chen","doi":"10.1109/ICPST.2000.900104","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900104","url":null,"abstract":"Modern power drive systems are the product of combined power electronic installation with electric motor and its driven part. In a power drive system, there exist various nonlinear links. In this paper, the nonlinear characteristics are first analyzed. Then the coupled relation is studied. It is shown from the research results that the modern power drive system is a coupled high nonlinear system containing various nonlinear links. Some phenomena of oscillation or vibration exist in practical applications of power converter drives and cycloconverter drives, and are introduced. The mechanism of oscillation or vibration is analyzed. A novel technique of controlling or suppressing this oscillation or vibration is also suggested in this paper. The applied effect of this technique in practical vibration suppression engineering are discussed and the applied results are given.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128903443","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}
引用次数: 1
An effective DP solution for optimal generation expansion planning under new environment 新环境下最优发电扩展规划的有效DP解
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900028
N. Jia, R. Yokoyama, Y.C. Zhou, U.A. Kozu
{"title":"An effective DP solution for optimal generation expansion planning under new environment","authors":"N. Jia, R. Yokoyama, Y.C. Zhou, U.A. Kozu","doi":"10.1109/ICPST.2000.900028","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900028","url":null,"abstract":"Under the existing electricity market in Japan, partial retail wheeling in a power generation system has been implemented accompanying the independent power producers' (IPPs) tender for the part of electric power generation of a utility. At same time, the environmental problem (CO/sub 2/ emission etc) is becoming a more and more important task to solve. For utility companies, the IPPs' participation and environmental impact should be considered simultaneously when making an optimal generation expansion plan under new environment. This paper discusses the probability of IPPs' participant for a utility company and proposes an approach for determining the optimal generation mix including IPPs under limited CO/sub 2/ emission. Based on the successive approximations DP (SADP) algorithm, an optimal generation expansion plan including IPPs, which coordinates the economy and supply reliability is obtained. The feasibility of the proposed approach is demonstrated by using a test power system.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130750481","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}
引用次数: 20
Overvoltage protection for computer serial communication 计算机串行通信过电压保护
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.897150
Qingheng Chen, Jinliang He, Wenjun Zhou, Q. Su
{"title":"Overvoltage protection for computer serial communication","authors":"Qingheng Chen, Jinliang He, Wenjun Zhou, Q. Su","doi":"10.1109/ICPST.2000.897150","DOIUrl":"https://doi.org/10.1109/ICPST.2000.897150","url":null,"abstract":"Micro-electronic circuits are often damaged by overvoltage. Shunting current, equalizing voltage, grounding, shielding and surge suppression are effective countermeasures for overvoltage protection, but overvoltage protection for micro-electronic circuits has some special demands different from these for electrical equipment. The approach that the overvoltage invades into micro-electronic circuits is studied in this paper. Based on the experimental results of the overvoltage withstand capability of some typical serial communication integrated chips, the experiments of the influence on digital signals caused by the connecting capacity of the voltage clamping device, and the experiments of voltage limiting components' behavior, a design method of overvoltage protector for computer serial communication is proposed.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131936067","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}
引用次数: 2
Transmission system operation and interconnection development in China 中国输电系统运营和互联发展
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900053
Lei Xiaomeng
{"title":"Transmission system operation and interconnection development in China","authors":"Lei Xiaomeng","doi":"10.1109/ICPST.2000.900053","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900053","url":null,"abstract":"The paper provides a summary report of the experience and problems in transmission system operation and interconnection prospects in the changing process of electricity industry in China. For the better utilization of the energy resources concentrated on remote areas the paper also describes the planning for regional interconnections countrywide around the year 2010 and some related problems are mentioned too. To meet the needs of higher reliability from consumers after restructuring of the electricity industry in China, a very important reliability criterion has been made to enhance the transmission reliability. Some of important system operation criteria, such as voltage control, reactive power compensation, frequency control, load following, under frequency loadshedding, and relay layout, are also mentioned. Some operational statistical results are presented to show the important roles played by the criteria.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132027829","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}
引用次数: 8
Enhanced transmission utilization with an integrated measurement, protection, and control system 集成了测量、保护和控制系统，提高了传输利用率
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.897130
M. Kaba, M. Bertsch, O. Lekva, W. Quaintance, C. Hennerbichler
{"title":"Enhanced transmission utilization with an integrated measurement, protection, and control system","authors":"M. Kaba, M. Bertsch, O. Lekva, W. Quaintance, C. Hennerbichler","doi":"10.1109/ICPST.2000.897130","DOIUrl":"https://doi.org/10.1109/ICPST.2000.897130","url":null,"abstract":"With the advent of privatization, deregulation, and competition in the electric utility industry, there is a demand for increased utilization and flexibility in the power transmission networks. Also, the increasing availability of advanced, multifunction measurement devices allows the development of comprehensive wide-area protections systems. The paper discusses an integrated wide-area protection system (IWAPS) that comprises multiple levels of system protection and control. Digital methods allow the implementation of protection applications to cover a wide range of potential power system problems, including voltage stability, angle stability, transfer capability, and power quality. The IWAPS system can provide significant savings in the form of higher utilization of transmission assets and reduced equipment and customer outages.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131237537","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}
引用次数: 4
Torque optimized speed control of a 3-phase induction motor 三相感应电动机转矩优化速度控制
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900033
M. Negm
{"title":"Torque optimized speed control of a 3-phase induction motor","authors":"M. Negm","doi":"10.1109/ICPST.2000.900033","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900033","url":null,"abstract":"A novel technique for speed control of a 3-phase induction motor (IM) based on optimal preview control theory is implemented in this paper. The vector method is adopted to synthesize a model for the 3-phase IM. This model comprises three-input variables and three-output variables which coincide with the synchronous reference frame. The input variables of this model are the stator angular frequency and the two components of the stator space voltage vector while the output variables are the rotor angular velocity and the two components of the stator space flux linkage. The objective of the proposed controlled system is to achieve motor speed control, field orientation control and constant flux control. A new error system is introduced into the control law to increase the robustness of the system. The preview feed-forward steps of the desired signal and disturbance signal are used to improve the transient response of the system. A space vector PWM control technique for a voltage source fed IM is prepared for microprocessor based control. Spectral analysis of the output voltage is evaluated to predict the effect of the proposed space vector modulation (SVM) technique on the dynamic performance of the IM. The optimal preview controlled system is synthesized and its applicability and robustness are demonstrated by digital computer simulation results.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121509168","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}
引用次数: 13
Simulations of ride-through possibilities for a line operated synchronous machine 线路操作同步机穿越可能性的模拟
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.897155
F. Carlsson, J. Engstrom
{"title":"Simulations of ride-through possibilities for a line operated synchronous machine","authors":"F. Carlsson, J. Engstrom","doi":"10.1109/ICPST.2000.897155","DOIUrl":"https://doi.org/10.1109/ICPST.2000.897155","url":null,"abstract":"Voltage sags and interruptions are a big power quality problem for the industry. Protection equipment automatically breaks the circuit when the power quality is degraded too much. In many cases short voltage sags or interruptions that last for only a hundred milliseconds lead to stoppage for hours in the production. This is mainly due to long start-up times of the industrial process. Simulations have been done on a blast furnace blower in the steel plant SSAB Oxelosund in Sweden. A line operated synchronous machine powers this. The results show that it is possible to reconnect to the mains if the voltage interruption is no longer than 150 ms long. If the remaining voltage is higher than 55% there is no need to break at all. These results show that changing the settings in the protection equipment may reduce the number of unwanted shutdowns.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"7 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120899485","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}
引用次数: 6
Nonlinear fuzzy logic control of a PWM inverter with a nonlinear load 非线性负载下PWM逆变器的非线性模糊控制
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900061
K. Purton, R. Lisner
{"title":"Nonlinear fuzzy logic control of a PWM inverter with a nonlinear load","authors":"K. Purton, R. Lisner","doi":"10.1109/ICPST.2000.900061","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900061","url":null,"abstract":"Capacitor input filter loads (nonlinear) typically cause voltage distortion in DC to AC inverter waveshape. Nonlinear fuzzy logic control fields promise in reducing this compared with conventional PID control. Comparisons between nonlinear fuzzy logic proportional derivative controllers and conventional linear PID controllers are made by simulating a buck converter subjected to large step load current changes. It was found that the choice of freewheeling switch (uncontrolled diode or synchronous rectifier) is a major factor in improved output voltage control. Fuzzy Logic controllers are investigated as arbitrary transfer characteristic generators. Membership function shape, degree of overlap, and number of overlaps, are examined, along with choice of rule table values, as to the effect on the transfer characteristic of the controller. Results are presented as transfer characteristic plots, 3D control surface plots, Bode plots, and step response plots for the buck converter.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121492541","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}
引用次数: 2
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