一起220kV金属氧化物避雷器异常发热故障分析  

Analysis on an Overheat Fault of 220 kV Metal Oxide Arrester

作　　者：许家响 张祥帅 范小辉 XU Jiaxiang;ZHANG Xiangshuai;FAN Xiaohui(Suzhou Power Supply Company,Suzhou 215000)

机构地区：[1]国网江苏省电力有限公司苏州供电分公司,江苏苏州215000

出　　处：《电力安全技术》2023年第8期61-63,共3页Electric Safety Technology

摘　　要：通过一起220 kV金属氧化物避雷器早期受潮缺陷的带电检测、停电诊断试验及解体检查,确认常规泄漏电流带电检测方式对发现多节串接避雷器的早期受潮缺陷不灵敏,提出采用红外精确测温发现早期受潮缺陷的方案以及相应的预防措施。Through the live detection,diagnosis test and disassembly inspection on the early damp defects of a 220 kV metal oxide arrester,it is found that the conventional live detection of leakage current is not sensitive to the early damp defects of multiple series-connected arrester,based on which the infrared precise temperature measurement to detect such early damp defects and the corresponding preventive measures are put forward.

关 键 词：金属氧化物避雷器 异常发热 早期受潮缺陷 红外测温 

分 类 号：TM621.5[电气工程—电力系统及自动化]