一字链及支链式的三相对称多电源非环网电力系统直算法

A straight line algorithm for three-phase symmetrical multi power non ring power systems with word chain and branch chain

传统算法使用变量以旧值递推新值的方法存在运算速度较慢、精度差等问题,采用直算法对一字链及支链式的三相对称多电源非环网潮流进行研究,根据一字链的三阶总矩阵,确定主链和支链,将支链等效成一个电源元件,使得主链成为一字链。具体计算支链的总矩阵,依次计算出主链中各元件的起端电压、起端电流、末端电压、末端电流以及消耗的功率;支链的起端电压就是等效电源元件的起端电压,支链的起端电流就是等效电源元件的工作电流,计算出支链中各元件的起端和末端的电压电流及功率。通过实验,采用直算法能够加快计算速度、降低迭代次数、提高结果准确率,在实际中较为适用。

The traditional algorithm uses variables to the old value recursive method to the new value problems of slower processing speed and accuracy,the algorithm of three-phase symmetrical straight chain and branched chain type multi word power non loop power flow studies,according to the three order total matrix word chain,determine the main chain and branched chain,the chain is equivalent to a the main power components,become a chain. The total specific matrix calculation of branched and compute each element in the main chain from the terminal voltage,current,voltage,end end end current and the power consumption of the terminal voltage is branched; equivalent power element end voltage,working current of the branched terminal current is the effective power element,calculate voltage the current and power of each element in the side chain and at the end of the play. Through experiments,the straight algorithm can speed up the calculation,reduce the number of iterations and improve the accuracy of the results,and is more applicable in practice.