【摘要】 实现快速简单的输电线路故障测距是电力系统亟待解决的问题,文章提出了一种基于微分方程的单端故障测距新方法,在初次求得故障距离后,估算对侧电流,进而修正流过故障电阻的电流,最后采用最小二乘法减小误差。与其它单端算法相比,该方法具有快速、简单等特点,具有工程应用价值。大量的 EMTP(Electromagnetism Transient Program)仿真结果表明该算法能较大地提高测距精度。更多还原

【Abstract】 The fast and simple fault location of transmission line is a problem to be urgently solved. A novel one-terminal fault location method based on differential equation is put forward,After fault distance is obtained, the current at the other side is estimated,then the current of fault resistance is modified,at last the error is reduced using least square method.This method is fast and simple and could be applied to engineering practice. A lot of EMTP simulation results show that using this method the accuracy of fault location can be considerably improved.更多还原