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
李晓磊 1张甲辉 1李林 1左美洋 1崔兆亮 1雷敏2
作者信息
- 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
- 折叠
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.
Abstract
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Key words
partial discharge/ultra-high frequency method/time-of-arrival location method引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据