智能牵引变电所二次回路CT极性接线错误导致拒动分析

The CT Polarity Wiring Error of the Secondary circuit of the Intelligent Traction Substation leads to the Rejection Analysis

文章以某智能牵引变电所CT极性接线错误,导致在故障时刻未能正确跳闸的现象进行了分析,根据故障现象重现了故障事件时间轴,对拒动原因以及跳闸过程进行了分析,并提供了预防出现相关问题的建议。

This paper analyzes the phenomenon of CT polarity wiring error in an intelligent traction substation,leading to the correct trip at the fault time.The basic principles of overcurrent protection of main transformer,feeder overcurrent protection and power supply arm protection are briefly described.According to the fault phenomenon,the fault event time axis is reproduced,the cause of rejection and the trip process are analyzed,and the suggestions for preventing related problems are provided.