一种电力系统最小负荷功率裕度的快速求取方法

本文以雅可比矩阵零奇异值对应的左奇异向量为负荷增长方向，从系统初始运行点出发，用改进连续潮流法搜索此方向上的电压崩溃点，再以该崩溃点雅可比矩阵零奇异值对应的左奇异向量作为新的负荷增长方向重新计算，直到负荷增长方向与崩溃点处崩溃点曲面的法线方向重合为止，从而得出了一种最危险的负荷增长方式和最小负荷功率裕度的快速求解方法，IEEE14节点系统实例计算验证了该方法的可行性。

A Fast Solving Method of the Minimal Load Margin in Power System

In this article,from the initial operating point I search the voltage collapse point with the improved continuation power flow method,using the left singular vector corresponding to the zero singular value of the Jacobi matrix as the initial load increasing direc- tion,and then use the left singular vector of the voltage collapse point just gotten as the new load increasing direction to recalculate till the load increasing direction coincides with the normal direction of the collapse hood face at the new voltage collapse point.Accordingly I put forward a fast solving method for the worst load increasing direction and the minimal load margin,and validate the feasibility of this method with the calculation of the IEEE14 system in the end.