煤电钻高频检测网络状态分析  

State Analysis of High Frequency Detection Network for Electric Coal Drill

作　　者：柳春生[1] 

机构地区：[1]浙江科技学院电气学院,浙江杭州310023

出　　处：《煤矿机电》2008年第6期52-55,共4页Colliery Mechanical & Electrical Technology

摘　　要：针对煤电钻及其供电网络的特点,用分布参数电路的方法对煤电钻高频检测网络状态进行计算分析,确立了短路正常工作状态的网络输入阻抗。结合对25kHz工作频率的高频检测网络的实测结果,验证了高频短路保护灵敏高,保护范围大,非常适用于煤电钻的短路保护。Aiming at the characteristics of electric coal drill and its power supply network, the states of high frequency detection network of electric coal drill is calculated and analyzed by the distributing parameter circuit method, and the import impedances of network in a short circuit of normal work state is established. Combining with actual measurements of high frequency （25 kHz） detection network, it is tested an verified that the high frequency short circuit protection has high sensitivity and large protection range, and is suited for the short circuit protection of electric coal drill.

关 键 词：煤电钻 高频检测 短路保护 网络状态分析 

分 类 号：TD421.1[矿业工程—矿山机电] TM930.114[电气工程—电力电子与电力传动]