2018年11月电工技术学报Vol.33 No. 22 第33卷第22期TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Nov. 2018
DOI: 10.19595/https://www.doczj.com/doc/dc17892226.html,ki.1000-6753.tces.171387
断路器特性对切除35kV空母线并联电抗器
操作过电压的抑制效果
郑一鸣1徐华2金佳敏3刘浩军1刘石1
（1. 国网浙江省电力有限公司电力科学研究院杭州 310014
2. 国网浙江省电力有限公司杭州 310007
3. 国网浙江省电力有限公司温州供电公司温州 325028）
摘要切除空母线并联电抗器时，极易出现电弧复燃和等效截流等现象，产生的操作过电压会造成相关设备相间短路和电抗器匝间绝缘损毁等故障，威胁电气设备安全。切除220kV变电站
35kV空母线并联电抗器时操作过电压导致的设备故障时有发生，危及电网安全稳定运行。从切除
并联电抗器过电压产生的机理、危害和抑制思路等方面开展系统分析，对比断路器性能和投切位
置对过电压的抑制效果，并进行现场实测和PSCAD仿真分析，为35kV空母线并联电抗器操作过
电压的抑制提供了解决思路和工程经验。
关键词：并联电抗器空母线介质绝缘恢复强度操作过电压暂态仿真
中图分类号：TM86
Suppression Effects of Circuit Breaker Characteristics on Switching
Overvoltage of Cutting Shunt Reactor on 35kV No-Load Busbar
Zheng Yiming1Xu Hua2 Jin Jiamin3 Liu Haojun1 Liu Shi1
（1. State Grid Zhejiang Electric Power Research Institute Hangzhou 310014 China
2. State Grid Zhejiang Electric Power Company Hangzhou 310007 China
3. State Grid Zhejiang Power Company Ltd. Wenzhou Electric Power Supply Company
Wenzhou 325028 China）
Abstract When cutting shunt reactor on no-load busbar, the phenomena, such as current chopping, arc reignition and equivalent current chopping, are easy to occur during the switching process. The resulting overvoltage caused by the operations can cause phase-to-phase short-circuit of the related equipment and inter-turn insulation damage of the shunt reactor, which threatens the safety of electrical equipment. Equipment breakdowns caused by switching overvoltage of 35kV shunt reactor on no-load busbar in 220kV substation occur frequently, endangering the safe and stable operation of the power grid. In this paper, the mechanism, perniciousness and suppression of shunt reactor switching overvoltage were systematically analyzed. The suppression effects of circuit breaker characteristics and position on overvoltage were compared, and the overvoltage measurement and PSCAD simulation analysis were carried out, which provides solutions and engineering experience for the overvoltage suppression of 35kV shunt reactor on no-load busbar.
Keywords：Shunt reactor, no-load busbar, dielectric insulation recovery strength, switching overvoltage, transient simulation
收稿日期 2017-09-21 改稿日期 2018-01-10
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