基于前推回代法的电力系统潮流计算程序。 需要输入支路阻抗和节点功率矩阵。包括支路号、首节点号、尾节点号、支路自阻抗、尾节点给定功率。 输出各节点的电压幅值、相角和各支路电流。-Power flow calculation program based on the forward and backward substitution method. Need input the branch impedance node power matrix. Including branch numb