一例带电水冲洗触发的220kV避雷器爆炸事故分析  

A Fault Analysis of 220 kV Arrester Explosion Triggered by Charged Water Washing

作　　者：李浩良 潘剑南 苏全 刘子钊 LI Haoliang;PAN Jiannan;SU Quan;LIU Zizhao(Guangzhou Yueneng Power Technology Development Co.,Ltd.,Guangzhou 510075,China)

机构地区：[1]广州粤能电力科技开发有限公司,广东广州510075

出　　处：《湖南电力》2021年第2期87-90,共4页Hunan Electric Power

摘　　要：对一例220 kV金属氧化物避雷器在带电水冲洗后发生爆炸故障的原因进行了分析。通过对完好避雷器和故障避雷器进行解体和对比分析,发现故障避雷器下节顶部压力释放装置内部的密封胶圈发生凹陷变形。最后,对该类事故提出预防措施。The cause of explosion failure of a 220 kV metal oxide arrester after charged water washing is analyzed.By disassembling and comparing the intact arrester and the fault Arrester,it is found that the sealing apron inside the pressure relief device at the top of the lower section of the fault arrester has degenerated.Finally,the preventive measures of explosion fault are put forward.

关 键 词：金属氧化物避雷器 带电水冲洗 爆炸 解体 密封不良 预防措施 

分 类 号：TM862.1[电气工程—高电压与绝缘技术]