电缆绝缘在线监测传感器设计研究  

Design and Research of On-line Monitoring Sensor for Cable Insulation

作　　者：吴文臻 Wu Wenzhen(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3期23-26,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面上项目(2022-2-TD-MS003)。

摘　　要：针对井下电网故障中泄漏电流是交流配电线路对地绝缘下降或受损而形成的现象,研发零磁通电流传感技术的μA级别高精度电流传感器,并采用加窗的谐波分析法有效消噪,保障了数据采集的准确性。对井下电气设备泄漏电流进行实时监测,实现绝缘故障早期预警。In view of the phenomenon that the leakage current in the underground power grid fault is caused by the decrease or damage of the insulation of the AC distribution line to the ground,theμA level high-precision current sensor with zero magnetic flux current sensing technology was developed,and the harmonic analysis method with windows was adopted to effectively eliminate noise,thus ensures the accuracy of data collection.The leakage current of underground electrical equipment was monitored in real time to realize the early warning of insulation fault.

关 键 词：电缆绝缘 在线监测 泄漏电流 绝缘下降 故障预警 

分 类 号：TD76[矿业工程—矿井通风与安全]