含分布式电源的配电网故障定位改进矩阵算法

由于传统矩阵算法在含分布式发电的配电网故障定位中的适用性变差,提出了一种改进矩阵算法实现对含分布式发电配电网的故障定位。该方法根据变电站母线处分支节点以及与分布式电源相连节点的故障信息,首先确定发生故障的区域,然后在该区域内利用改进的矩阵算法定位故障区段。考虑到故障信息的畸变,该方法针对定位结果的不同采用不同的纠错方法,提高了定位的准确性。该方法降低了矩阵的维度,排除了T接线处的误判。算例验证了所提出方法的可行性及容错性。

An Improved Matrix Fault Location Algorithm for Distribution Networks with Distributed Generation

Because of the traditional matrix algorithm in the distribution network with distributed generation fault location becomes worse, an modified matrix algorithm for fault location of distribution network with distributed generation was proposed. According to the fault information of the branch nodes of substation bus branch and the node connected with the distributed power , the fault area was determined first, an improved fault criterion is used to locate the fault section in this region. Considered the fault information distortion, this method aimed at different correction methods for different positioning results, and improves the accuracy of positioning. This method reduces the dimension of the matrix and eliminates the misjudgment at the T wiring. An example is given to verify the feasibility and fault tolerance of the proposed method.