采用脉冲展宽实现煤矿选择性漏电保护的新方法  

A New Method of Using Pulse Broadening to Realize Selective Leakage Protection in Coal Mine

作　　者：胡晓东[1] 童军[1] 

机构地区：[1]西安科技大学电气与控制工程学院,陕西西安710054

出　　处：《工矿自动化》2010年第11期29-32,共4页Journal Of Mine Automation

基　　金：甘肃省科技计划资助项目(093GTGD001)

摘　　要：针对煤矿井下电网选择性漏电保护动作的可靠性问题,提出了一种采用脉冲展宽实现零序电流方向选择性漏电保护的硬件电路。在网压660 V实验台上的实验和TEK DPO2014示波器的波形表明,提出的电路正确、可靠。采用该电路实现的漏电保护装置在煤矿井下取得了成功应用。In order to improve the reliability of selective leakage protection of power network in mine, a hardware circuit using pulse broadening to realize selective leakage protection of zero-sequence current direction was proposed. Its test on 660 V test device and waveform on TEK DPO2014 oscilloscope proved that the proposed circuit is correct and reliable. Leakage protection devices with the proposed circuit have been successfully applied in coal mines.

关 键 词：煤矿 选择性漏电保护 零序电流 脉冲展宽 

分 类 号：TD611.5[矿业工程—矿山机电]