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Two-stage controlled islanding strategy based on Stoer-Wagner and improved Dinic algorithms

机译:基于Stoer-Wagner和改进的Dinic算法的两阶段受控孤岛策略

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The controlled islanding for the power system is an effective method to deal with the emergent situations caused by large disturbances. The size of the solution space would increase exponentially as the scale of the power grid increases. The goal of our controlled islanding strategy is to divide the system into several islands quickly. Meanwhile, the generator coherency and the power-flow disruption have to be taken into consideration carefully. This paper proposed a two-stage fast islanding strategy for large power networks, which is on the basis of large power grid graph theories. In the first stage, the Stoer-Wagner algorithm is employed to obtain the grouping cluster of coherent generators in the dynamic undirected liaison graph. In the second stage, the improved Dinic max-flow method is proposed to search the optimal splitting boundary so as to acquire the minimum power flow impact. Our two-stage islanding strategy does not need to reduce the whole power network. Simulations on IEEE 118-bus and162-bus power systems showed that the proposed strategy can acquire high quality solutions effectively and efficiently.
机译:电力系统的受控岛是处理由大扰动引起的紧急情况的有效方法。随着电网的比例增加,解决方案空间的大小将增加。我们受控岛屿战略的目标是快速将系统分成几个岛屿。同时,必须仔细考虑发电机一致性和流量破坏。本文提出了一种用于大型电网的两级快速岛屿战略,即在大型电网图形理论的基础上。在第一阶段,采用STOER-WAGNER算法来获得动态无向联络图中的相干发生器的分组簇。在第二阶段,提出了改进的大道最大流量方法,以搜索最佳分裂边界,以便获取最小的功率流动影响。我们的两阶段岛屿战略不需要减少整个电力网络。 IEEE 118总线和162总线电力系统的仿真表明,该策略可以有效且有效地获得高质量解决方案。

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