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2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)最新文献

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New findings on radial distribution system load flow algorithms 径向配电网潮流算法的新发现
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850107
J. Nanda, M. Srinivas, M. Sharma, S. Dey, L. Lai
{"title":"New findings on radial distribution system load flow algorithms","authors":"J. Nanda, M. Srinivas, M. Sharma, S. Dey, L. Lai","doi":"10.1109/PESW.2000.850107","DOIUrl":"https://doi.org/10.1109/PESW.2000.850107","url":null,"abstract":"In this paper, an attempt has been made to comprehensively compare the two most commonly used distribution load flow (DISTFLOW) models for radial networks to decide the better of the two for practical application. The paper also presents another novel method for radial distribution load flow and demonstrates its superiority over the two said models. Results have been obtained by considering two sample radial distribution networks, one consisting of 33 buses and other consisting of 70 buses.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128038602","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
Partial discharge location as a diagnostic tool for power cables 局部放电定位作为电力电缆的诊断工具
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847582
M. Mashikian
{"title":"Partial discharge location as a diagnostic tool for power cables","authors":"M. Mashikian","doi":"10.1109/PESW.2000.847582","DOIUrl":"https://doi.org/10.1109/PESW.2000.847582","url":null,"abstract":"The competitive environment created by free market electricity supply requires that electric utilities reduce capital and operating expenses and, at the same time, increase the overall quality of electricity. Underground distribution cable systems are particularly sensitive to this need, which can be effectively addressed by in-situ diagnostic tests. This paper discusses one such diagnostic method based on the location of discrete partial discharge sites. The paper briefly reviews the conditions under which a cable service would produce partial discharges. It illustrates the fact that, although cable systems undergo some overall deterioration, service failures occur at the sites of discrete defects, which in most instances can be identified by a partial discharge test. The principles of the test are reviewed and statistical data with significant case studies are presented. The effects of maximum test voltage and instrument sensitivity are discussed in the light of statistical field test data.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"224 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125844991","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: 21
Harmonic active power flow in low and medium voltage distribution systems 中、低压配电系统中的谐波有功潮流
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847338
J. Lundquist, M. Bollen
{"title":"Harmonic active power flow in low and medium voltage distribution systems","authors":"J. Lundquist, M. Bollen","doi":"10.1109/PESW.2000.847338","DOIUrl":"https://doi.org/10.1109/PESW.2000.847338","url":null,"abstract":"This paper shows the principles of how the harmonic active power flow in radial low and medium voltage distribution systems varies due to the interaction between loads and the power system. The interaction is due to the change in source impedance caused by e.g. harmonic filters or capacitor banks and a mix of single and three phase nonlinear and linear loads. The active harmonic power flow in a certain point in a power system, with nonlinear loads, in most cases does not represent the actual flow to the loads in the downstream system. The harmonic active power is partly or completely included in the fundamental active power, depending on the mix of loads. Some basic examples are shown in addition with measurements from a low voltage system equipped with harmonic filters, feeding a nonlinear load.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"342 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132425278","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: 10
Simplified analytic study of the HBC fuse ability to withstand induction motor start cycles HBC熔断器承受感应电动机起动循环能力的简化分析研究
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847686
J. Gómez, M. Principi, C. Pérez
{"title":"Simplified analytic study of the HBC fuse ability to withstand induction motor start cycles","authors":"J. Gómez, M. Principi, C. Pérez","doi":"10.1109/PESW.2000.847686","DOIUrl":"https://doi.org/10.1109/PESW.2000.847686","url":null,"abstract":"One of the main causes of unexpected and incorrect operation of the high breaking capacity medium voltage fuses protecting induction motors is the aging originated in the start cycles. Up to now the main source of information to keep in mind the start cycle consists in graphic or charts given by the fuse makers for a reduced number of start typical conditions, smaller times to 6 s, 15 s and not bigger than 60 s, with start numbers from 2 to 32 per hour. If the cycle in the study differs from those mentioned, the user is forced to make extrapolations without too much knowledge on the consequences of the same. The under study phenomenon of aging takes place for the well known process of mechanical fatigue, originated by the compression and traction stresses, due to the increases and descents of temperature of the fuse elements during the start cycles. A simple analytic method was developed based on the start and off-start currents and the duration of the diverse cycles that it allows, in order to predict the maximum and minimum temperature that will be reached. Such temperatures by means of their comparison with temperature corresponding to the factor K of the Standard IEC 644 and their extension to other conditions different from the one normalized, allows the calculation in order to guarantee the fuse operation fret of aging. The method was experimentally tested on fusible of 125 A, 2.3 kV with very good results. Besides, was used to verify its application to cases mentioned in the specific references. Their practical employment is direct from the information usually given by the fuse maker, that is to say having the characteristic curve current-time and the K mentioned factor. The method can be extended to other applications of fuses with recurrent load, as it is the case of other protection of power semiconductors.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134558963","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
Improvements for power systems performance: modeling, analysis and benefits of TCSCs 电力系统性能的改进:tcsc的建模、分析和效益
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850194
C. Gama, R. Tenório
{"title":"Improvements for power systems performance: modeling, analysis and benefits of TCSCs","authors":"C. Gama, R. Tenório","doi":"10.1109/PESW.2000.850194","DOIUrl":"https://doi.org/10.1109/PESW.2000.850194","url":null,"abstract":"This paper describes the modeling and investigation of the performance of a thyristor controlled series capacitor (TCSC) earned out within the EMTP-ATP program. The TCSC control system was developed using; two different languages supported by EMTP-ATP: Transient Analysis of Control Systems (TACS) and MODELS language. The modeling task is described briefly and some details of the use of the MODELS language are given. The TCSC model is then used to investigate the capability of the TCSC for improving power system performance with respect to: subsynchronous resonance phenomena, fault current limitation, and line current control. Additionally, the innovative POD structure used in an actual TCSC in the Brazilian North-South interconnection is discussed along with some lest results.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134160487","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: 29
Adaptation of EMS functions for a market environment 根据市场环境调整EMS功能
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.849923
J. Giri
{"title":"Adaptation of EMS functions for a market environment","authors":"J. Giri","doi":"10.1109/PESW.2000.849923","DOIUrl":"https://doi.org/10.1109/PESW.2000.849923","url":null,"abstract":"The author describes how traditional energy management system (EMS) power system applications are undergoing changes, in order to adapt to the users needs of the deregulated energy markets environment.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131710283","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: 0
High power high frequency three phase IGBT inverter 大功率高频三相IGBT逆变器
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.849961
A. I. Maswood, M. Rahman, T. G. Neo
{"title":"High power high frequency three phase IGBT inverter","authors":"A. I. Maswood, M. Rahman, T. G. Neo","doi":"10.1109/PESW.2000.849961","DOIUrl":"https://doi.org/10.1109/PESW.2000.849961","url":null,"abstract":"A three-phase 68.94 kVA IGBT inverter, capable of switching at 6.95 kHz with a 5% loss limit is presented in this paper. The particular inverter employs a technique known as PWM-SHE (pulse width modulation-specific harmonic elimination), which requires the use of less switching pulses to eliminate the same number of low order harmonics when compared to SPWM technique. PWM-SHE also results in higher utilization of the power conversion process since its fundamental output voltage is significantly higher than those obtained from the SPWM technique. This paper illustrates a 43% higher frequency attainable using the PWM-SHE technique as compared to the SPWM technique, within 5% loss limit consideration.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131850834","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
Computer-aided new training systems by using voice recognition unit 新型计算机辅助训练系统采用语音识别单元
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850171
S. Nakano, T. Tsubaki, S. Hironaka
{"title":"Computer-aided new training systems by using voice recognition unit","authors":"S. Nakano, T. Tsubaki, S. Hironaka","doi":"10.1109/PESW.2000.850171","DOIUrl":"https://doi.org/10.1109/PESW.2000.850171","url":null,"abstract":"Innovations in the design of power circuit breakers are making rapid progress and state-of-the-art technology is now concentrated on SF/sub 6/ gas-insulated switchgear or vacuum-type circuit breakers, however, a large number of older type circuit breakers such as oil, air blast or magnetic type circuit breakers which are no longer manufactured, are still used in the field. Engineers proficient in handling those older type circuit breakers are now coming of age and retiring from the maintenance works. Under these circumstances, it is urgent to recruit young engineers to be able to handle those old type circuit breakers. A portable type interactive voice recognition system making data input direct has been proved to be also very useful for instruction and training. This paper introduces the outline of newly developed instruction and training of personnel to familiarize the use of the old type of circuit breakers.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132601134","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: 0
An efficient power pool simulator for the study of competitive power market 一种研究电力市场竞争的高效电力池模拟器
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850159
G. Shrestha, S. Kai, L. Goel
{"title":"An efficient power pool simulator for the study of competitive power market","authors":"G. Shrestha, S. Kai, L. Goel","doi":"10.1109/PESW.2000.850159","DOIUrl":"https://doi.org/10.1109/PESW.2000.850159","url":null,"abstract":"With the deregulation of the power industries in many countries, the trend is towards accommodating more freedom and choice to the market participants and encouraging competition as much as possible in the power market. This paper presents the development of a power pool simulation system, which incorporates the features that give more choices and freedom to the market participants and induce greater competition. Important features of the simulation system are discussed. Some issues pertaining to the effects of the bidding data submitted by power suppliers on their benefits, and on the system operation are addressed and analyzed. It is expected that under the competitive market, power suppliers will achieve their cost recovery and optimize their benefits themselves by adjusting their bidding data.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125205407","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: 10
Research on the brittle fracture of FRP rods and its acoustic emission detection 玻璃钢杆脆性断裂及其声发射检测研究
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847329
Liang Xidong, F. Ju, C. Ling
{"title":"Research on the brittle fracture of FRP rods and its acoustic emission detection","authors":"Liang Xidong, F. Ju, C. Ling","doi":"10.1109/PESW.2000.847329","DOIUrl":"https://doi.org/10.1109/PESW.2000.847329","url":null,"abstract":"Brittle fracture of composite insulator FRP rods has aroused widespread attention in China. In the laboratory, two load-applying methods are used to simulate the brittle fracture process. One is constant tensile load method, which is used to test the resistance of FRP core against stress corrosion. The other is decreasing tensile load method, with the purpose to simulate similar appearance of brittle fracture section in service. Some important factors that influence the brittle fracture process, which are not well described in IEC Drafts are discussed and clarified. Finally, the acoustic emission (AE) feature of the brittle fracture process is analyzed. It is in great difference from normal short-term tensile failure process.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130760613","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
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