高压输电线路故障测距方法的研究

本文提出了一种高压输电线路单端故障测距的方法,这种方法利用单端故障电压、电流计算线路故障电压对距离的导数,再求出其范数在线路上的分布特点来确定故障点的位置,完成故障测距。该方法具有较高的测量精度,而且不受故障类型和过渡电阻的影响,且不存在故障测距死区。

Research on Fault Location Methods for High Voltage Power Transmission Lines

This paper proposes a kind of HV transmission line single-ended fault location method. This method uses the breakdown voltage and current to calculate the derivative of fault voltage to distance. And then it determines fault point position with the distribution characteristics of norm to complete the fault location. This method has higher accuracy and do not suffer fault type and the influence of interim resistance, and don＇t exist fault location dead zone.