矿井电网选择性绝缘在线监测技术研究  

Study on Selective Insulation On-line Monitoring Technology for Mine Power Grid

作　　者：檀静 Tan Jing(China Coal Research Institute,Beijing 100013,China;Engineering Research Center of Coal Mines Emergency Technology Equipment,Beijing 100013,China;Beijing Mine Safety Engineering Technology Research Center,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司,北京100013 [2]煤矿应急避险技术装备工程研究中心,北京100013 [3]北京市煤矿安全工程技术研究中心,北京100013

出　　处：《煤矿机械》2023年第5期37-40,共4页Coal Mine Machinery

基　　金：天地科技股份有限公司科技创新创业资金专项项目上项目(2022-2-TD-MS003)。

摘　　要：通过研究单相漏电时零序电压的变化规律,研究了矿井电缆绝缘下降检测方法及动力电缆附加低频信号取样技术,结合常规漏电保护技术,开发了动力电缆绝缘参数在线监测系统及配套软件,实现了对矿井低压供电系统每一分支电缆的绝缘在线监测,达到选择性漏电保护的目的。By studying the change rule of zero sequence voltage when single-phase leakage occurs,the detection method of insulation decline of mine cables and the additional low-frequency signal sampling technology of power cables were studied.Combined with the conventional leakage protection technology,the on-line monitoring equipment and supporting software for the insulation parameters of power cables were developed,realized the on-line monitoring of the insulation of each branch cable of the mine lowvoltage power supply system and achieved the purpose of selective leakage protection.

关 键 词：矿井电网 绝缘下降 电缆监测 漏电保护 低频信号 

分 类 号：TD76[矿业工程—矿井通风与安全]