一起刀闸操作引起开关跳闸事故的分析  

An analysis of the isolating switch operation leading to switch trip

作　　者：郑宁敏 林匹 

机构地区：[1]福建省厦门超高压输变电局,福建厦门361004

出　　处：《电力系统保护与控制》2009年第8期102-103,106,共3页Power System Protection and Control

摘　　要：通过对福建省500kV福州变的一起500kV线路刀闸操作引起联变220kV侧开关跳闸的事故调查,指出一些进口的刀闸设备在辅助触点的设计上存在重大隐患,而且这些隐患在变电所电气设计中极易被忽视。就此问题也提出预防和整改的措施。同时希望籍此文提醒继电保护同行在采用同类设备时注意检查,避免类似事故的发生。Through the investigation for the accident that the 220kV switch of the transformer tripped caused by an operation of a 500kV line isolating switch, this paper points out the hidden troubles of the imported isolating switch in the designing of auxiliary contact point, and these hidden trouble is easily neglected in substation electrical design. This paper proposes some improved measures, and by the way, reminds relay protection operators to inspect when using the same kind equipments, to avoid the similar accident.

关 键 词：刀闸 辅助触点 交流干扰 跳闸 

分 类 号：TM762[电气工程—电力系统及自动化]