告诉支路阻抗的节点导纳矩阵求解的通用程序。-Tell branch node is the impedance matrix of the general program admittance

该程序能够求解任一节点的电力系统的节点导纳矩阵，是一种通用的方法。-The program can solve any node of the power system nodal admittance matrix, is a common method.