500kV变电站出口耐张金具过热原因分析  

Cause Analysis on Outlet Tension Fittings Overheating of 500 kV Substations

作　　者：朱义东[1] 陈浩[1] 黄珂[1] 张艳红[1] 

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

出　　处：《东北电力技术》2015年第2期42-46,共5页Northeast Electric Power Technology

摘　　要：针对辽宁电力系统近几年发生的数次变电站或发电厂出口金具过热、部分金具出现烧熔断裂的案例,分析了金具出现过热的原因,指出风力振动等原因导致接触电阻增大,非导流金具流过负荷环流是造成过热的主要原因。In recent years,the fittings overheating occurred several times in the outlet of substation or power plant in Liaoning province. And some fittings were even melted and broken by the overheating. This paper analyzes some typical cases,focused on the causes of fitting overheating. And it is proposed that the main causes of overheating are due to poor contact and the overload circulation of nondiversion fittings.

关 键 词：拉杆断裂 金具过热 环形电流 风振 

分 类 号：TM63[电气工程—电力系统及自动化]