煤矿井下电网选择性漏电保护器设计  

Design of selective leakage protector for underground power grid in coal mine

作　　者：胡宝岭 贾江伟 HU Baoling;JIA Jiangwei(Guodian Construction Investment Inner Mongolia Energy Co.,Ltd.,Ordos 017209,China)

机构地区：[1]国电建投内蒙古能源有限公司察哈素煤矿,鄂尔多斯017209

出　　处：《电子测试》2024年第1期37-40,共4页Electronic Test

基　　金：国家能源集团2021年度第一批科技创新项目(GJNY-21-7)资助。

摘　　要：基于煤矿井下漏电安全问题,结合国内触电、漏电保护体系建设需求,研究并设计一款煤矿井下电网选择性漏电保护器。设计成功地以零序电流的方向性选择漏电保护原理为理论支撑,以MSP430F149为控制中心,通过对三相电网故障支路的零序电流和零序电压进行测量,经过比较其幅值和相位关系,可准确判断出发生漏电的支路,实现精确的选择性漏电保护功能,对提升煤矿井下漏电安全问题有一定的积极意义。Based on the safety problem of underground coal mine leakage,combined with the demand of domestic electric shock and leakage protection system construction,a selective leakage protection device for underground coal mine power grid is studied and designed.This design is successfully based on the theory of directional selective leakage protection principle of zero-sequence current,and takes MSP430F149 as the control center.By measuring the zero-sequence current and zero-sequence voltage of the fault branch of the three-phase power grid,and comparing its amplitude and phase relationship,it can accurately determine the branch where leakage occurs and realize accurate selective leakage protection function,which has a certain positive significance to improve the safety of underground leakage in coal mines.

关 键 词：漏电保护 零序电流 零序电压 MSP430F149 

分 类 号：TD683[矿业工程—矿山机电]