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配电网结构的双亲节点矩阵经过拓扑识别后,分离为常规馈线双亲接点矩阵和T型馈线双亲接点矩阵,然后分别判断常规馈线上的故障和T型馈线上的故障。同时对原有的基于FTU的故障定位方法进行改进,形成了一种T型馈线故障定位的新方法。此方法无须进行复杂的矩阵计算和规格化处理,可以直观地定位T型馈线区域的故障。通过配电网多点电源多点故障下的算例计算验证了此算法的正确性。
After topology identification, the parent node matrix with distribution network structure is separated into a conventional feeder parent contact matrix and a parent feeder parent matrix of the T feeder, and then the faults on the conventional feeder and the feeder on the T feeder are respectively determined. At the same time, the existing FTU-based fault location method is improved, forming a new method of T-feeder fault location. This method can intuitively locate the fault in the T-feeder area without complex matrix calculation and normalization. The correctness of this algorithm is verified by an example calculation under multi-point fault in distribution network.