建立电力系统互感部分双口网络方程的新算法

A New Algorithm to Set up Two-Port Network Equations for Power System with Zero-Sequence Mutual Coupling

本文提出了一种将互感线路断线转化成切除无互感线路的处理方法，在此基础上，将“建立无互感电力系统双重故障口网络方程的新方法”一文提出的不修改原网各序节点导纳（或阻抗）阵建立无互感电力系统—口网络方程的新方法，推广到计及零序互感时的更一般情况。该算法具有不受系统内互感组数及每组内互感支路条数的限制、计算速度快、较其它方法简便、易于编制程序等特点。

A new method to translate open-conductor faults on a transmission line with zerosequence mutual coupling into removing a line without zero-sequence mutual coupling is developed. On ths basis, the method to set up two-port network equations for power system withoutt zero-sequence mutual coupling spreads to power system with zero-sequence mutual coupling. The main advantages of this algorithm are: (1)no Practical Iimits on the number of mutual line group in power system and the number of the mutual line in each group;(2)fast calculation; (3)more simplicity than other methods; (4)easy to write a program.