超高压交流输电线路单相接地故障测距方法研究

Research on Single-phase Grounding Fault Location Method for UHV AC Transmission Line

本文利用R-L模型将原本含有误差补偿的方程转换到时域内,通过连续采样进行积分求解得到故障位置的距离数据,该方法能够充分利用故障信息,并能有效提高测距速度。通过PSCAD建立线路模型后的仿真结果表明,进一步验证上述方法的有效性,同时发现该算法可以忽略不同相位造成的误差。

In this paper,the R-L model is used to transform the equation with error compensation into time domain,and the distance data of the fault location is obtained by integrating continuous sampling.This method can make full use of the fault information and effectively improve the speed of ranging.The simulation results after building the line model by PSCAD show that the above methods are valid and the algorithm can ignore the errors caused by different phases.