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.
出处
《煤矿机电》
2008年第6期52-55,共4页
Colliery Mechanical & Electrical Technology
关键词
煤电钻
高频检测
短路保护
网络状态分析
electric coal drill
high frequency detection
short circuit protection
network state analysis
