考虑了配电网运行中出现短路的情况，可以计算节点导纳矩阵和阻抗矩阵，分别对单相接地短路、单相短路、两相相间短路、三相短路的内容做了分析(Considering the short circuit in the operation of distribution network, node admittance matrix and impedance matrix can be calculated, and the contents of single-phase to ground short circuit, single-phase short circuit, two-phase to phase short circuit and three-phase short circuit are analyzed respectively)