摘要
在地区范围内发生一起35kV异名相跨线接地故障。其中一条线保护动作跳闸并重合成功,另一条线保护动作跳闸,重合闸未动作。根据故障前后运行方式变化及相关知识原理,参照故障录波数据,以及现场检查汇报情况,对该事故的过程进行了分析与思考。给出了其中一条线路未重合的原因,并解释了产生的谐振现象,并提出了防止该类线路跳闸动作再次发生的建议措施。
A 35 kV phase difference across-line ground fault occurred in the area.One of the line protection actions trips and recloses successfully,the other line protection action trips,and the reclosing brake does not act.According to the change of operating mode before and after the fault and related knowledge theory,with reference to the fault recorder data,as well as on-site inspection report,the process of the accident is analyzed and considered.This paper gives the reason why one of the lines is not coincident,and explains the resulting resonance phenomenon to prevent the tripping action of such lines from occurring again.
出处
《工业控制计算机》
2019年第12期95-96,98,共3页
Industrial Control Computer
关键词
异名相跨线
重合闸
故障录波
谐振
synonym phase cross line
reclosing
fault recording
resonance
