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。
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.
作者
汪美林
WANG Meilin(State Grid Fujian Electric Power Co.,Ltd.Xiamen Power Supply Company,Fujian Xiamen 361000,China)
出处
《农村电气化》
2024年第4期31-34,共4页
Rural Electrification
关键词
线路避雷器
异常发热
受潮
诊断性试验
line lightning arrester
abnormal heat
damping of insulation
diagnostic testing
