针对配电网存在T接点的情况 ,提出了基于拓扑辨识的配电网故障定位算法。该算法将配电网络的拓扑描述矩阵分解成不含区域和只含区域的矩阵描述方式 ,有效地解决配电网的故障区段判断 ;同时可以自动定位区域的顶点 ,适应多变的网络结构 In view of the existence of T-contact in the distribution network, a fault location algorithm based on topology identification is proposed. The algorithm decomposes the topological description matrix of distribution network into a matrix description mode without region and only region, effectively resolves the fault section judgment of distribution network, at the same time, it can automatically locate the vertices of the region and adapt to the changing network structure