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以多层图分割理论为框架提出了一种电力系统主动解列的断面搜索方法。该方法结合图论和电力系统的自身特点,通过粗化、初始分区和还原优化3个步骤实现解列断面的快速搜索。在粗化过程中,针对失步解列的特殊问题,提出一种基于同步机组群的潮流追踪方法,提高了粗化过程的效率。使用贪婪图生长算法完成初始分区,并在还原优化过程中提出一种考虑拓扑结构约束的0-1规划方法,以保证较高的划分质量和子系统的连通性。最后通过IEEE 118节点和300节点测试系统验证了所述方法的有效性。
Based on the multi-layer segmentation theory, a cross-section search method based on active decomposition of power system is proposed. Combining with graph theory and power system’s own characteristics, this method achieves the quick search of the cross-section through three steps: coarsening, initial partitioning and reduction and optimization. In the process of roughening, aiming at the special problems of unsynchronized unsynchronization, a power flow tracking method based on synchronous generator group is proposed, which improves the efficiency of the roughening process. The greedy graph growth algorithm is used to complete the initial partitioning, and a 0-1 programming method considering topology constraints is proposed in the process of restoration and optimization to ensure high partition quality and subsystem connectivity. Finally, the validity of the proposed method is verified by IEEE 118-bus and 300-node test system.