电力系统安全稳定域的可视化及分支计算

针对电力系统的分析与控制及电网调度迫切需要解决的可视化问题,提出了在注入空间中计算电力系统稳态安全域、稳定区域和分支边界的一种新方法.该方法采用一组以给定方向为法方向的平行超平面切割所研究的区域,通过求解优化问题在每个超平面上得到一个横截区域,再将这些横截区域的边界在同一个图形中表现出来,从而实现了研究区域在注入空间中的可视化,并用电力系统的实际例子验证了该方法的有效性.与其他方法相比,该方法可以把研究区域的边界定量地刻画出来,还可应用于一般多解和可行区域可视化与拓扑结构的研究.

Visualization of security stability regions and computation of bifurcations of power systems

A new method of finding the steady-state security region, stability region and boundary bifurcations of power systems in the parameter space was proposed. The method is used to realize visualization of these regions and bifurcations, which is an urgent problem for power system analysis, control and dispatch. Firstly, the region discussed is sliced by a set of given parallel hyperplanes in a given direction, and then the intersection region in each hyperplane is calculated by the approach of optimization. Furthermore, the visualization of the region is realized in the injection space by plotting these intersection region boundaries in a same figure. A practical example verifies the effectiveness of the proposed method. Comparing with other methods, the method can be used to characterize these region boundaries quantitively, and be also applied to visualization and topological studies of multiple solutions and feasibility domain structures.