一起高阻接地故障引起的保护越级跳闸事故分析  

Analysis of Protective Over-Grade Trip Accident Caused by High Resistance Grounding Fault

作　　者：刘斌 覃勇 单国栋 

机构地区：[1]广西电网有限责任公司电力调度控制中心,广西南宁530023 [2]广西电网有限责任公司柳州供电局,广西柳州545000

出　　处：《红水河》2017年第6期75-79,共5页Hongshui River

摘　　要：分析了一起110 kV线路发生A相高阻接地故障引起的越级跳闸事故,结合录波详细分析了故障发生的原因以及各保护装置的动作行为。针对高阻接地故障,采用了一种新的测距方法,能准确定位故障位置。结合此次事故提出了相应的预防及整改措施。This paper analyses an over -grade trip accident caused by phase -A high resistance grounding fault of 110kVtransmission line and details the fault cause and action of each protective device based on fault record. In view of the highresistance grounding fault a new fault location method is adopted to accurately determine the fault location meanwhile thecorresponding prevention and rectification measures are also put forward in this paper.

关 键 词：高阻接地 越级跳闸 故障分析 

分 类 号：TM711[电气工程—电力系统及自动化]