220kV母线故障引起旁路转代线路误跳闸事故分析与改进  

Analysis and Improvement of Mistripping Accident of By pass Replacement Line Caused by 220 kV Bus Fault

作　　者：邳浚哲 檀林青 靳楠 张岩坡 张韶光 PI Junzhe;TAN Linqing;JIN Nan;ZHANG Yanpo;ZHANG Shaoguang(State Gnd Hebei Extra High Voltage Company,Shijiazhuang 050071,China)

机构地区：[1]国网河北省电力有限公司超高压分公司,河北石家庄050071

出　　处：《电工技术》2023年第3期119-121,126,共4页Electric Engineering

摘　　要：在双母双分段带旁路接线方式下,当母线发生故障时,母差保护动作跳闸的同时会通过线路远跳回路跳开对侧开关,从而实现快速切除故障。针对一起变电站220 kV母线故障导致被转代线路误跳闸事故,从线路转代步骤及远跳回路原理对事故原因进行分析,从回路设计、保护原理、运行规范三方面着手,提出了改进措施,以杜绝此类事故发生,对电网安全稳定运行具有一定的指导意义。Under the connection mode of double bus and double section with bypass,when the bus fails,the bus protection action trips and the switch on the opposite side will be tripped through the line remote tripping circuit to quickly remove the fault.In view of a mistripping accident of the transferred line caused by a 220 kV bus fault,the causes of the accident were analyzed from the line transfer step and the principle of far hop circuit.Starting from the three aspects of circuit design,protection principle and operation specification,improvement measures are proposed to prevent such accidents,which has certain guiding significance for the safe and stable operation of the power grid.

关 键 词：旁路 远跳 误跳闸 措施 

分 类 号：TM771[电气工程—电力系统及自动化]