一起110 kV电缆GIS终端爆炸故障分析  

Analysis of a 110 kV Cable GIS Terminal Explosion Failure

作　　者：张毅涛 朱广秀源 李剑武 董生成 贾海龙 云峰 甘云峰 ZHANG Yitao;ZHU Guangxiuyuan;LI Jianwu;DONG Shengcheng;JIA Hailong;YUN Feng;GAN Yunfeng

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810008 [2]国网青海省电力公司,青海西宁810008 [3]青海电研科技有限责任公司,青海西宁810008 [4]国网青海省电力公司海西供电公司,青海海西817000

出　　处：《青海电力》2024年第S01期90-95,共6页Qinghai Electric Power

摘　　要：分析了一起110 kV电缆GIS终端爆炸故障,通过解体检查、合金分析和X射线检测等手段判断本次故障的主要原因是电缆GIS终端应力锥端部局部放电造成绝缘老化,泄漏电流增大发热,在放电和发热共同作用下应力锥和环氧套管结合面绝缘强度降低发生闪络。A 110 kV cable GIS terminal explosion failure was analyzed.The main cause of the failure was insulation aging caused by partial discharge at the end of the stress cone of the cable GIS terminal,increased leakage current and heating.Under the combined action of discharge and heating,the insulation strength of the stress cone and epoxy sleeve joint surface was reduced and flasover occurred.

关 键 词：电缆GIS终端 应力锥 局部放电 过热 

分 类 号：TM247[一般工业技术—材料科学与工程]