一起220kV线路避雷器异常诊断性试验分析
Analysis of an Abnormal Diagnostic Test on a 220 kV Line Lightning Arrester
汪美林1
作者信息
- 1. 国网福建省电力有限公司厦门供电公司,福建 厦门 361000
- 折叠
摘要
通过一起由在线监测系统发现的220 kV电压等级线路避雷器异常发热故障进行介绍,并对异常避雷器进行直流参考电压及泄漏电流试验、运行电压下红外测温、阻性电流试验以及工频参考电压试验等诊断性分析,最终确定异常原因为避雷器内部环氧树脂绝缘筒受潮引起,并提出后续处理建议与措施.
Abstract
By introducing an abnormal heating fault of a 220 kV voltage level line lightning arrester discovered by the online monitoring system,and conducting diagnostic analysis such as DC reference voltage and leakage current tests,infrared temperature measurement under operating voltage,resistive current tests,and power frequency reference voltage tests on the abnormal lightning arrester,it is ultimately determined that the abnormal cause is caused by moisture inside the epoxy resin insulation cylinder of the lightning arrester,And propose follow-up handling suggestions and measures.
关键词
线路避雷器/异常发热/受潮/诊断性试验Key words
line lightning arrester/abnormal heat/damping of insulation/diagnostic testing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据