基于低频信号注入法的煤矿高压电网绝缘监测装置设计  

On-line Insulation Monitoring Device Based on Low Frequency Signal Injection Method for Mine High-Voltage Power Network

作　　者：王建军 朱卫东 

机构地区：[1]中煤大屯煤电公司,江苏沛县221600

出　　处：《煤矿机电》2013年第1期48-51,57,共5页Colliery Mechanical & Electrical Technology

摘　　要：从煤矿电网运行特性入手,采用TMS320LF2407A芯片,设计了低频信号注入的煤矿高压电网绝缘在线监测装置。通过检测各支路低频电压、低频电流及两者的相位差,实现了对煤矿高压电网绝缘在线监测。按PSCAD对理论的分析结果进行了仿真验证,该监测方法取得了较满意的效果。From the operation features of mine grid, the low frequency signal injection method for on-line monitoring device of mine high-voltage power is designed based on TMS320LF2407A chip. The on-line monitoring for mine high-voltage grid insulation is realized through testing the phase separation between low frequence voltage and current of each branch circuit. According to results from theory analysis by PSCAD, the simulation test proves that the monitoring method is satisfied.

关 键 词：煤矿电网 低频信号注入 绝缘参数 在线监测 

分 类 号：TM732[电气工程—电力系统及自动化]