一起110kV GIS绝缘子局部放电检测案例分析  

Analysis of a Partial Discharge Detection Case of 110 kV GIS Insulators

作　　者：李晓磊 张甲辉 李林 左美洋 崔兆亮 雷敏 LI Xiaolei;ZHANG Jiahui;LI Lin;ZUO Meiyang;CUI Zhaoliang;LEI Min(Jinan Power Supply Company of State Grid Shandong Electric Power Company,Jinan 250012,China;Qingdao Power Supply Company of State Grid Shandong Electric Power Company,Qingdao 266002,China)

机构地区：[1]国网山东省电力公司济南供电公司,山东济南250012 [2]国网山东省电力公司青岛供电公司,山东青岛266002

出　　处：《山东电力高等专科学校学报》2024年第2期1-4,共4页Journal of Shandong Electric Power College

摘　　要：采用特高频法对某220 kV变电站110 kV线路间隔气室进行局部放电检测时,发现气室内部存在特高频局部放电信号,利用时差定位法确定了局部放电点所在的位置。将气室内部绝缘子返厂进行检测试验,通过X射线探伤试验、局部放电试验和耐压试验,确定了绝缘子局部放电量超标的原因,并提出了相应的建议,为类似隐患的分析和处理提供参考。The ultra-high frequency partial discharge signals are found when using the ultra-high frequency method to detect par⁃tial discharge in the air chamber of a 110 kV line bay at a certain 220 kV substation.The location of the partial discharge point is determined using the time-of-arrival location method.The insulators inside the air chamber are sent back to the factory for inspec⁃tion.Through X-ray flaw detection test,partial discharge test and voltage withstand test,the causes of excessive partial discharge quantity of the insulators are identified,and the corresponding recommendations are proposed to provide reference for the analysis and handling of similar hidden dangers.

关 键 词：局部放电 特高频法 时差定位法 

分 类 号：TM855[电气工程—高电压与绝缘技术]