基于暂降类型判断的短路故障类型识别研究

Research of Short-Circuit Fault Type Recognition Based on Sag Type Detection

不同短路故障类型会引起不同的电压暂降类型,本文分析了故障类型与暂降类型之间的关系、电压暂降的传递规律,以及暂降类型的幅值及其对称分量的特点。基于电压暂降事件录波数据,提出了一种通过判断不同电压暂降类型来进行短路故障类型识别的方法,并通过仿真和实例分析验证了该方法的可行性。

Different types of short-circuit faults can lead to different sag phenomena.This paper analyzes the relationships between the fault types and sag types,the propagation laws of sags and the characteristics of sag magnitudes and sequence components.Then based on judging the voltage sag type it proposes the method of short-circuit fault type recognition is proposed,which applies symmetrical component method.Finally,the feasibility of the proposed method is demonstrated through simulation and actual case analysis.