基于电流变化率的短路检测保护方法

介绍了基于电流变化率的短路检测保护方法,该方法采用单片机检测这一变化率,实现了短路检测和保护,解决了短路故障电流波形变化与其他故障电流波形变化的区分问题以及干扰电流波形突变与短路电流波形突变的识别问题,通过开发的新型煤电钻综合保护装置,验证了该方法的有效性和准确性。

Based on Current Rate of Change of Short-circuit Protection Methods

Introduced based on the electric current rate of change's short circuit examination protection method,this method uses the monolithic integrated circuit to examine this rate of change,realized the short circuit to examine and to protect,has solved the short trouble current waveform change the recognition question which changed suddenly with other fault current waveform changes' discrimination question as well as the interference current profile sudden change and the shortcircuit current profile,throught the development new coal electric drill synthesis protective device,has confirmed this method validity and the accuracy.