电力系统紧急情况下的动态分区和自主解列策略

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Abstract In power system emergency control, the active-splitting control is the last measure when it faces the severe cascading contingency. Its objective is to maintain the stability of the sub partitions and reduce the total loss of load of the whole system to the minimum. A 2-way dynamic partitioning and active-splitting strategy in power system emergency control is discussed in this paper. Firstly, according to slow coherency grouping algorithm, generators groups with similar oscillation mode will separate into optimal group, and aggregate generator groups to some virtual coherent nodes. Then on the basis of the Laplace partitioning strategy, a novel weight index is proposed to measure the “distance” of two adjacent nodes and improve the Laplace partitioning strategy. And a heuristic neighborhood searching partitioning strategy is raised to search the possible cut-sets with smaller net generation-load imbalance around the neighborhood of the cut-sets found by the previous two partitioning strategies. A heuristic load-shedding approach is applied on all these possible cut-sets to calculate the amount of load-shedding of each partition. All these constitute the hybrid partitioning strategy of this paper. The applications on the IEEE 118 system validate the effectiveness of the improvement of the weight index and the proposed hybrid Laplace partitioning strategy proposed in this paper.

Key words： Emergency control slow coherency system splitting partitioning strategy cut-set

Received: 28 November 2010 Published: 19 March 2014

PACS:

TM744

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	Song Honglei
	Wu Junyong
	Wu Linfeng

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Song Honglei,Wu Junyong,Wu Linfeng. Dynamic Partitioning and Active-Split Strategy in Power System Emergency Control[J]. Transactions of China Electrotechnical Society, 2012, 27(1): 224-229.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I1/224

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