单相接地故障线路报警监测系统

On the Alarm Monitoring System for Single-phase Grounding Faulty Lines

中性点不接地电力系统6 kV馈出线开关柜,因无法自产零序二次电流,无法在后台监控机和微机保护测控装置进行实时监测,存在供电可靠性差和选线准确率较低的弊端。研发了一种单相接地故障线路报警监测系统,提高故障线路的查找效率和准确率,缩短停电时间,提高了供电可靠性。

For the switch cabinet of 6 kV outgoing feeder in neutral ungrounded power system, because it couldn't produce the zero-sequence secondary current, the real-time monitoring of background monitor and microcomputer protection measuring and controlling devices couldn't be carried out, and so there were the disadvantages of poor power-supply reliability and low accuracy of line selection. The alarm monitoring system for single-phase grounding faulty lines was developed, and then the search efficiency and accuracy of faulty lines was improved, the outage time was shortened, and the reliability of power supply was improved.