摘要
针对一起500kV变电站220kV线路跳闸事故造成站用交流系统失压事件展开分析,介绍站内主接线方式、站用交流系统运行方式及相关保护配置.根据现场设备配置和事故现象,结合保护动作特性,对比分析各种情况下可能出现的事故结果,最终确定此次线路跳闸造成站用交流系统失压的原因,可为变电站同类事故的预防和分析提供重要参考.
An accident of 500kV substation AC system voltage-loss caused by 220 kV transmission line trip-out was analyzed in this paper. The main electric connection mode, operation mode of station-used AC system and relative protection configuration were introduced. According to local facility and accident phenomena, the possible accident results in different cases were discussed with protection action characteristics, and the reason of accident was determined finally. It provides an important reference for similar substations accident preventment and analysis.
出处
《电力科学与技术学报》
CAS
2013年第4期78-82,共5页
Journal of Electric Power Science And Technology
关键词
变电站
线路跳闸
站用交流电源
失压
substation
transmission line trip-out
station-used AC system
voltage-loss
