110kV线路避雷器受潮分析

Analysis of an accident from 110kV line surge arrester dampness

通过介绍110kV变电站110kV线路避雷器内部受潮发热的情况，对故障情况进行试验分析，找出了避雷器受潮发热的原因是密封胶老化龟裂，潮气进入避雷器本体，引起受潮发热，并提出了相应的预防措施，防止类似问题的再次发生。

This paper introduces sweating and heating circumstance of the 110kV line surge arrester in 110 kV substation, take exper ments ancl analyzes the reason of failure. Then finds that aged and cracked sealant makes moisture dipped into the arrester body is the main reason, and presents corresponding anti - accident measures to prevent the similar problems oceuring again.