摘要
设计了一种基于直流电桥法的矿用电缆绝缘在线监测方案,阐述了直流电桥法的检测原理,分析了检测灵敏度,讨论了在线检测精度的影响因素。通过仿真实验验证了该方法的可行性和有效性,在实验室中进行了模拟试验,试验结果表明:直流电桥法适合于井下中性点经消弧线圈接地供电系统高压电缆绝缘电阻在线监测。
The article designs an on - line monitoring scheme for mine cable insulation based on DC bridge method, discusses and ana- lyzes the detection principle and sensitivity of DC bridge method and discusses several influence factors of online detection accuracy. Its feasibility and availability are verified by simulation test. The experimental results in the laboratory indicate that DC bridge method is suitable tor insulation resistance online monitoring of mine high voltage cable in the supply line of the neutral point by arc - suppression coil grounding.
出处
《煤矿安全》
CAS
北大核心
2014年第2期82-85,共4页
Safety in Coal Mines
关键词
矿用高压电缆
绝缘电阻
在线检测
直流电桥
中性点
mine high voltage cable
insulation resistance
online detection
DC bridge
neutral point
