吴消元法在精确求解电力系统潮流方程中的应用

Application of Wu Method in Solving for All the Steady-State Power Flow Solutions

应用吴消元法求得算例系统潮流方程的全部精确解,得到了其他方法难以得到的完整的PV、QV曲线,包括低压运行曲线,并通过平衡点稳定性分析,得到节点电压状态参数空间中平衡点稳定与不稳定的区域分界.阐述了系统受大扰动后过渡到低电压运行状态的可行性,为电压失稳机理的探明提供了依据.

All the precise steady-state solutions of the example model were worked out by using Wu method. Hereby, this paper got the accurate PV and QV curves, including low voltage operating state curves, which can hardly be worked out in other ways. By analyzing the stability of the equilibrium states, the paper found the boundary dividing stable and unstable operating points in the node-voltage-variables space. The paper presented the probability that the system may fall on another stable operating state after large disturbance.