求解含有小阻抗支路系统潮流的一种新方法

如何改善病态系统潮流计算的收敛性一直是电力系统稳态分析的一项重要内容。在分析小阻抗支路对牛顿法潮流的影响基础上，提出了求解含有小阻抗支路系统潮流的一种新方法－变雅可比牛顿法；从潮流计算的基本方程出发，通过对迭代过程中小阻抗支路两端电压幅值和相角变化规律的分析，给出了此方法收敛性的详细证明，计算结果表明，本方法能够较好地解决牛顿法计算含有小阻抗支路系统的潮流收敛性问题，并且与小阻抗支路零功率法的迭代次数基本相同，但编程比较简单。

New load-flow method to deal with system with small impedance branches

It is always an important task for static analysis of power system to improve the convergence of Newton method for ill conditioned system. By analysing the variation of voltage magnitude and phase angle at both ends of small impedance branches, a new varied Jacobian Newton method is proposed to deal with systems with small impedance branches. The new method indicates good convergence. The simulation results also verify the proposed method is as good as the zero load flow with small impedance branches method, but the program is easier than the zero load flow with small impedance branches method.