矿井低压电网漏电故障分析与检测电路设计  

The Fault Analysis and Detection Circuit Design of Low-voltage Power Network Leakage in Mine

作　　者：刘理云[1] 

机构地区：[1]娄底职业技术学院电子信息工程系,湖南娄底417000

出　　处：《实验室研究与探索》2015年第5期119-122,149,共5页Research and Exploration In Laboratory

基　　金：湖南省科技厅(2014SK3227)

摘　　要：由于我国矿井电网广泛采用中性点不接地,漏电故障占其总故障的70%左右,井下漏电故障直接影响产矿企业的正常生产和经济效益。文章分析了井下低压电网漏电故障,利用附加直流源漏电保护原理,零序电压、零序电流及相位比较漏电保护原理,设计实用检测电路,并分析其工作原理,进行实验验证。In mine power network, about 70% of total failures are resulted by the leakage fault, because the non neutral grounding is widely used in our country. This directly influences normal production and economic benefit of mine enterprises. By analyzing the leakage fault of mine low voltage power network and using the principle of additional DC source leakage protection, practical detection circuit zero sequence voltage, zero sequence current and phase comparison leakage protection, a is designed and its working principle is analyzed, Experiment verifies its effects.

关 键 词：故障分析 检测电路设计 矿井电网 漏电故障 

分 类 号：TD611.5[矿业工程—矿山机电]