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根据节点电压法编程，节点导纳矩阵，具有较好的通用性。-According to the node-voltage programming, the node admittance matrix, and has good versatility.

newton-raphson maylab COD with YBUS calculatour: Build up admittance matrix function [YR,YI] = YBus(tlsend,tlrec,tlresis,tlreac,tlsuscep,tlcond,shbus,shresis,shreac,ntl,nbb,nsh) YR=zeros(nbb,nbb) YI=zeros(nbb,nbb) Transmission lines