一起配网10 kV线路接地引起多重并发事故案例分析  

Analysis of a Case of Multiple Accidents Caused by Grounding of a 10 kV Distribution Network Line

作　　者：黄振华 陈根奇 王少春 赵印明 陈艳 李成标 杜旭 HUANG Zhenhua;CHEN Genqi;WANG Shaochun;ZHAO Yinming;CHEN Yan;LI Chengbiao;DU Xu(State Grid Zhejiang Shaoxing Power Supply Company,Zhejiang Shaoxing 312000,China;Zhejiang Zhongtong Wenbo Service Co.,Ltd.,Zhejiang Shaoxing 312000,China)

机构地区：[1]国网浙江绍兴供电公司,浙江绍兴312000 [2]浙江中通文博服务有限公司,浙江绍兴312000

出　　处：《农村电气化》2024年第7期42-45,57,共5页Rural Electrification

摘　　要：介绍了一起10 kV线路因单相接地故障,引起其他线路绝缘性能降低,造成相间短路,同时因为温渎变电站华都9031线开关机械卡涩无法正常分闸导致越级跳闸的事故案例,对事故的处置流程进行了详细描述,同时对故障的原因进行了分析,最后给出相应的整改措施。This article introduces an accident case of a 10 kV line due to a single-phase grounding fault and voltage rise,which resulted in a decrease in the insulation performance of other line cable heads,resulting in a phase to phase short circuit.At the same time,due to the mechanical jamming of the line switch,it was unable to open normally,resulting in a skip trip.The handling process of the story is described in detail,and the cause of the fault is analyzed.Finally,corresponding corrective measures are provided.

关 键 词：配网 接地 越级跳闸 电缆故障 

分 类 号：TM727[电气工程—电力系统及自动化]