一起10 kV单相接地引发三相短路故障的辨识与分析  

Identification and Analysis of a Three-phase Short-circuit Fault Caused by 10 kV Single-phase Grounding

作　　者：李航 LI Hang(State Grid Jibei Electric Power Company Qinhuangdao power supply company,Hebei Qinhuangdao 066000,China)

机构地区：[1]国网冀北电力有限公司秦皇岛供电公司,河北秦皇岛066000

出　　处：《农村电气化》2024年第9期60-64,共5页Rural Electrification

摘　　要：针对一起10 kV中性点非有效接地系统中由单相接地引发两相异地接地短路,最终发展为三相短路的事故案例,通过故障录波及现场故障信息情况进行辨识分析,得出了故障原因,并提出了防范措施及建议。In this paper,an accident case of two-phase off-ground short-circuit caused by single-phase grounding in a 10 kV low-current grounding system,which eventually developed into three-phase short-circuit,was identified and analyzed through fault records and on-site fault information,the cause of the fault was described,and preventive measures and suggestions were put forward.

关 键 词：10 kV中性点非有效接地系统 单相接地 三相短路 

分 类 号：TM862[电气工程—高电压与绝缘技术]