中国电力 ›› 2017, Vol. 50 ›› Issue (5): 59-64.DOI: 10.11930/j.issn.1004-9649.2017.05.059.06

• 安全专栏 • 上一篇    下一篇

1 000 kV特高压避雷器泄漏电流异常缺陷分析

高燃, 束畅, 蒲道杰, 尹建军, 朱雨晨, 黄道均, 吴大胜   

  1. 国网安徽省电力公司 检修公司,安徽 合肥 230061
  • 收稿日期:2017-02-19 出版日期:2017-05-20 发布日期:2017-05-26
  • 作者简介:高燃(1988—),男,安徽合肥人,工程师,从事变电检修工作。E-mail:gaoranzxz@126.com

Comprehensive Analysis on Abnormal Defects of Leakage Current on 1 000 kV UHV Surge Arrester

GAO Ran, SHU Chang, PU Daojie, YIN Jianjun, ZHU Yuchen, HUANG Daojun, WU Dasheng   

  1. State Grid Anhui Maintenance Company, Hefei 230061, China
  • Received:2017-02-19 Online:2017-05-20 Published:2017-05-26

摘要: 针对某1 000 kV特高压变电站主变压器高压侧避雷器运行发现泄漏电流异常的情况,从避雷器瓷瓶污秽径向放电、表面泄漏电流干扰、电网电压谐波影响以及内部阀片受潮4个方面进行了全面分析,并采用有效措施进行了诊断,最后根据诊断的结论对避雷器进行了有针对性的停电检查和返厂处理,最终印证了其中的推论。所进行的分析与诊断对国内特高压避雷器的运维工作有一定的参考性。

关键词: 特高压, 避雷器, 泄漏电流, 阻性电流, 异常

Abstract: According to the operation of the high voltage side lightning arrester of main transformer in a 1 000 kV UHV transformer substation, a comprehensive analysis was made on the abnormal leakage current in terms of the radial discharge of arrester porcelain insulator contamination, the interference of surface leakage current, the influence of voltage harmonics and the damp of valve elements. And effective measures were used to diagnose the fault. Finally, corresponding check and return treatment was made according to the diagnosis results, which proves the correctness of the diagnosis. The analysis and diagnosis in this paper can provide a reference for the service of UHV arresters.

Key words: ultra high voltage (UHV), surge arrester, leakage current, resistive current, abnormal

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