煤矿井下漏电保护技术分析

Analysis of Electric Leakage Protection Technology in Coal Mine

通过分析煤矿井下供电系统的结构特点,对煤矿井下漏电事故发生时电网零序电压、零序电流分布规律进行分析,设计了选择性漏电保护装置。为了提高系统工作稳定性,设计相关的抗干扰方案。根据数据采集的需求,以STM32单片机为控制器,设计相关的时钟电路、输出驱动电路。

By analyzing the structure characteristics of the underground power supply system in coal mine,the distribution law of zero sequence voltage and zero sequence current of the power grid is analyzed,and the selective electric leakage protection device can be designed.In order to improve the stability of the system,relevant anti-jamming schemes can be designed.According to the needs of data acquisition,STM32 microcontroller is used as the controller to design the relevant clock circuit and output drive circuit.