给定网络N，求其关联矩阵A，基本回路矩阵 ，基本割集矩阵 。
给定网络N，形成节点导纳矩阵Y，求逆得Z；利用支路追加法对追加一条支路（树支/连支）后的网络进行修正。
利用稀疏存储技术实现对 的查找；节点优化技术（动态、半动态）；因子表技术。(Given network N, and its associated matrix A, basic circuit matrix, the basic cut set matrix.
Given the network N, the node admittance matrix Y is formed and the inverse Z is obtained. The network is added to the network after adding a branch (tree branch / branch).
The use of sparse storage technology to achieve the search; node optimization technology (dynamic, semi dynamic); factor table technology.)