IEEE/PES Transmission and Distribution Conference and Exhibition最新文献_第3页

Investigation of dielectric breakdown probability distribution for vacuum disconnecting switch 真空隔离开关介质击穿概率分布的研究

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177725

T. Shioiri, K. Sasage, T. Kamikawaji, M. Homma, E. Kaneko

{"title":"Investigation of dielectric breakdown probability distribution for vacuum disconnecting switch","authors":"T. Shioiri, K. Sasage, T. Kamikawaji, M. Homma, E. Kaneko","doi":"10.1109/TDC.2002.1177725","DOIUrl":"https://doi.org/10.1109/TDC.2002.1177725","url":null,"abstract":"A vacuum insulation system has little effect on environments. Therefore, the vacuum insulation system is expected to find wider application, such as disconnecting switch and earthing switch. To investigate the reliability of equipment of vacuum insulation, a study was carried out to clarify breakdown probability distributions in vacuum gap. Experiments were carried out to compare a uniform field gap and nonuniform field gap on the breakdown probability distributions. Further, experiments were carried out to investigate effects of no-load switching on the breakdown probability distributions for vacuum disconnecting switch. The electrode materials were oxygen-free copper and copper-chromium alloy. The test results show that the breakdown probability distribution of the vacuum gap can be represented by a Weibull distribution using a location parameter, which show the voltage that permits a zero breakdown probability. When aiming for highly reliable vacuum disconnecting switch, an important factor is insulation design with the location parameter just mentioned take into account. The location parameter obtained Weibull plot depends on electrode area. This is probably because the existence probability of factors as weak-points for breakdowns such as micro-protrusions and microparticles depends on the electrode area. The shape parameter obtained Weibull plot of vacuum gap was 10/spl sim/13, and is constant irrespective non-uniform field factor. The breakdown probability distribution after no-load switching can be represented by Weibull distribution using a location parameter. The shape parameter after no-load switching was 6/spl sim/8.5, and is constant, irrespective of gap length. This indicates that the scatter of breakdown voltage was increased by no-load switching. It is supposed that the cause of this phenomena is generation of microparticles and field emission site on the surface of copper-chromium contacts.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122225881","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: 5

Study of ground-fault surge in buried EHV cable line based on EMTP simulation 基于EMTP仿真的埋地超高压电缆接地故障浪涌研究

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177665

Chen Min, Y. Sekiguchi, S. Mashio, M. Mitani, A. Jinno

引用次数: 2

Impacts of nonutility induction generator to distribution network 非公用感应发电机对配电网的影响

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177676

V. Pongpornsup, B. Eua‐arporn

引用次数: 5

DC loop type quality control center for FRIENDS-system configuration and circuits of power factor correctors friends直流回路型质量控制中心——系统配置及功率因数校正电路

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177788

M. Saisho, T. Ise, K. Tsuji

引用次数: 6

Applications of information technology for the distribution automation 信息技术在配电自动化中的应用

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178472

M. Tsai

引用次数: 2

Improvement in maintenance and inspection of transformers in Japan 改进日本变压器的维护和检查

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177706

N. Amano

引用次数: 4

Development of power supply system for obstruction lights exploiting induced current which flows through overhead ground wires 利用架空地线感应电流供电的障碍灯供电系统的研制

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177800

T. Yamaguchi, S. Takano, O. Naganuma, M. Matsuoka, H. Nakamura, K. Tomonaga

引用次数: 9

Strategic power infrastructure defense (SPID): a wide area protection and control system 战略电力基础设施防御(SPID)是一种广域保护和控制系统

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178433

Chen-Ching Liu

引用次数: 19

Feeder reconfiguration for power quality requirement and feeder service quality matching 馈线重新配置以满足电能质量要求和馈线服务质量匹配

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178292

C.C. Shen, C. Lu

{"title":"Feeder reconfiguration for power quality requirement and feeder service quality matching","authors":"C.C. Shen, C. Lu","doi":"10.1109/TDC.2002.1178292","DOIUrl":"https://doi.org/10.1109/TDC.2002.1178292","url":null,"abstract":"Electric power industry deregulation has forced utilities to face new challenges and to assess the cost-benefit implications of providing acceptable quality services for different customers. Distribution systems supply various types of customers that require different service quality. Through feeder reconfiguration, it is possible to coordinate these requirements with the reliability of network elements, and customers with special power quality requirements can be served by adequately reliable feeders. The coordination provides a guide for investing adequate PQ improvement equipment and locating these equipments. A method is proposed in this paper to assess the reliability indices of feeders and service quality requirements of different customer types. It finds a match between quality requirements of the loads and the feeder service performance by feeder reconfiguration. Fuzzy set theory and binary particle swarm optimization technique are used to find the optimal solution. Results based on a simple sample network are presented. The results can be used as a starting point for building Quality Control Centers (QCC) that provide difference classes of power service.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114208570","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: 12

Synchronized monitoring of power network through time synchronizing unit 通过时间同步装置对电网进行同步监测

IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178401

V. Arunachalam, V. Shivakumar, V. Nandakumar, B. Sarkar

引用次数: 1