基于双端阻抗法的配电网故障定位研究

Research of Fault Location of Distribution Network Based on Double-end Impedance Method

配电网故障定位是电力系统的关键技术。针对配电网故障定位精度易受线路参数影响的问题,文章在分析故障定位原理的基础上,提出了基于双端阻抗法的单电源配电网故障区域定位方法,推导了无分支配电网线路单相接地故障测距方程,为多分支配电网的故障测距提供了基础。MATLAB仿真结果验证了该方法的有效性。

Fault location of distribution network is one of the key technologies for power system. Aiming at the problem of fault location precision of distribution network effected by line parameters, the paper put forward a malfunction zone location means of distribution network of single power based on double-end impedance method on the basis of analyzing knowledge foundation for fault location. It also deduced the range measurement equation of single-phase grounded fault without branch in line of distribution network, supplying knowledge foundation for distribution network with multi-branch. MATLAB simulation results showed that the method is effective.