煤矿井下供电系统漏电保护系统设计

Leakage Protection System Design of Underground Power Supply System in Coal Mine

煤矿井下供电系统的漏电现象是引发用电安全事故的重要原因之一。针对该问题设计了一套漏电保护系统,通过对供电线路的零序电压、相电压以及零序电流进行检测,并对检测到的信号进行分析处理,判断供电线路是否存在漏电现象。对于存在漏电问题的线路系统可以发出控制信号,将线路进行切断处理,以达到保护整个供电线路的目的。

The leakage phenomenon of underground power supply system in coal mine is one of the important reasons for power safety accidents.A leakage protection system is designed for this problem.The system detects the zero sequence voltage,phase voltage and zero sequence current of the power supply line,analyzes and processes the detected signals,and judges whether there is leakage in the power supply line.For the line system with leakage problem,it can send out control signal and cut off the line to protect the whole power supply line.