一起220kV GIS母线失压事故分析  

Accident Analysis on a Bus Voltage Loss of 220 kV GIS

作　　者：韦德福 李斌[1] 洪鹤[2] 

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]国网辽宁省电力有限公司,辽宁沈阳110006

出　　处：《东北电力技术》2015年第6期46-50,共5页Northeast Electric Power Technology

摘　　要：介绍了一起220 kV GIS母线失压的事故分析过程,根据现场解体和处理情况,得出GIS母线气室C相主母线导电杆端部镀银铜触头与铝导杆连接处固定螺栓紧固力矩不足,使接触电阻增大、螺栓通流发热,铝导电杆过热部位逐渐熔化滴落到下部的B相母线上,引发三相短路是此次事故发生的主要原因,通过对这起事故的分析研究,对今后GIS类似故障的处理分析提供借鉴与参考。An accident analysis of bus voltage loss of 220 kV GIS is introduced in this paper. According to the disintegration and the treatment, fixed bolt has small torque at the joint of aluminum guide bar and silver copper contact for conduction pole ends of C-phase main bus, this causes a increase in contact resistance, screw bolt get hot and aluminum guide bar can be melted which drop B-phase busscrew bolt, three-phase short-circuit happens that is the main accident reason. This paper analyses the accident and provides a ref- erence for the analysis and the dispose of similar GIS faults.

关 键 词：GIS 母线失压 三相短路 事故分析 

分 类 号：TM73[电气工程—电力系统及自动化] TM595