1100kV GIS盆式绝缘子局部放电的现场带电检测与试验分析

Experimental Analysis and On-site Live Partial Discharge Detection in 1 100 kV GIS Disk Insulator

介绍一起1 100 kV GIS盆式绝缘子局部放电带电检测案例,重点阐述现场带电检测、在线监测跟踪、现场交流耐压下UHF检测以及返厂解体测试等过程的检测数据与分析,探讨分析了脉冲电流法与UHF法检测结果差异的可能原因。该案例有助于进一步理解UHF与脉冲电流法检测的差异性,并为基于带电检测的GIS状态评估技术提供现场数据参考。

An example of live partial discharge（PD） detection in disk insulator of 1 100 kV GIS is introduced.In this paper, the detection data and analysis of on-site live detection, online monitoring and track, UHF（ultra-high frequency） detection under AC withstanding voltage and plant disassembly test are presented. Besides, the possible reasons of detection result differences between pulse current method and UHF method are discussed and analyzed. The case is helpful to understand the difference between UHF and pulse current method, and it also provides an on-site reference for GIS condition assessment based on live detection.