一起110kV线路接地引起2条220kV线路保护误动作分析  

Mal Operation Analysis of Two 220kV Transmission Lines' Protection Caused by an 110kV Transmission Line Grounding

作　　者：刘同和[1] 冯景稳 李强[3] 

机构地区：[1]濮阳供电公司,河南濮阳457000 [2]濮阳龙丰热电有限责任公司,河南濮阳457000 [3]河南电力试验研究院,河南郑州450052

出　　处：《河南电力》2011年第4期54-56,共3页Henan Electric Power

摘　　要：对一起110kV线路接地引起2条220kV线路保护误动作进行分析,找出了保护动作的原因并阐述了其危害性。针对重动继电器的不足,提出了改进措施,供相关技术人员参考。This paper analyzed the mal operation of two 220kV transmission lines＇ protection caused by an 110kV transmission line grounding, found the reason of protection operation and described its hazard. According to the deficit of repeating relay, this paper suggested some improvement methods for relative technicians＇ reference.

关 键 词：保护启动 交流失压 距离保护 接点自保持 

分 类 号：TM773[电气工程—电力系统及自动化]