6 kV开关电缆出线螺栓烧损导致机组跳闸事故分析  

Analysis of Unit Trip Caused by Burning out Bolt of 6kV Switch Cable

作　　者：狄素珍 张林渠 DI Su-zhen;ZHANG Lin-qu(The Sichuan Guang’an Power Co.,Ltd,Guang'an 638017,China)

机构地区：[1]四川广安发电有限责任公司,四川广安638017

出　　处：《通信电源技术》2020年第15期50-52,共3页Telecom Power Technology

摘　　要：某电厂在启动6 kV电泵时,开关电缆出线螺栓烧损形成三相短路接地,6 kV母线电压瞬间失压,引起部分厂用电设备跳闸,造成锅炉MFT。因此,分析事件原因及暴露的问题,强调开关电缆出线螺栓紧固的重要性,建议对其采取针对性防范措施。When starting the 6kV electric pump in a power plant,the switch cable outlet bolt burns out,forming a three-phase short-circuit grounding,the voltage of the 6kV busbar is lost in an instant,which causes some power equipments to trip,resulting in the boiler MFT.This paper analyzes the cause of the incident and the exposed problems,puts forward the importance of bolt fastening for switch cable outlet line,and takes targeted preventive measures.

关 键 词：6 kV开关 出线 螺栓 烧损 跳闸 

分 类 号：TM6[电气工程—电力系统及自动化]