220kV金属氧化物避雷器故障类型分析与处理

Fault Type Analysis and Treatment of 220 kV Metal Oxide Arrester

对近年上海220 kV金属氧化物避雷器故障进行分析,介绍了避雷器在线监测仪指针卡涩引起示数偏大、避雷器表面脏污或内部受潮等引起发热的问题,针对不同故障现象列举了带电检测和停电试验等故障诊断方法,并总结了故障诊断过程中的注意事项,以保证人身及设备安全。

The faults of 220 kV MOA in Shanghai in recent years are analyzed. The problems of excessive indication, dirty surface or damp inside of the arrester caused by the pointer jam of the arrester on-line monitor are introduced. According to different fault phenomena, the fault diagnosis methods such as live detection and power failure test are listed, and the precautions in the fault diagnosis process are summarized to ensure the safety of personnel and equipment.