支路约束优化下的电网结构脆弱性研究

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Abstract According to the relationships among the change of generator production, energy margin and change of branch power flow, with the impact factor of the change of generator production on current as the basis, the combination of production change of all generators and the upper and lower limits of branch restriction are first computed by the non-linear programming. And then, based on the branch restriction, the assessment indexes of branch vulnerability are founded. At last, the validity and feasibility of this method is identified by the comparison of simulation results with optimal power flow in IEEE-30 bus system. One of the advantages of this research is that the upper and lower limits of branch restriction can be updated timely. In addition, because of the synthetical efficiency of multi-generators, the branch vulnerable characteristics may not change with the common trend. Therefore, when the energy margin is used to compute the branch limit, the branch power flow is admitted to change with the unspecific generator. As a result, it is helpful to further research the branch vulnerability.

Key words： Grid configure vulnerability predictor-corrector interior point algorithm optimal branch limit impact factor on current energy margin

Received: 14 January 2009 Published: 07 March 2014

PACS:	TM732
	TM711

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	Articles by authors
	Liu Qunying
	Liu Junyong
	Liu Qifang
	Shi Jili

Cite this article:

Liu Qunying,Liu Junyong,Liu Qifang等. Research on Grid Structural Vulnerability Based on Optimal Branch Limit[J]. Transactions of China Electrotechnical Society, 2011, 26(3): 148-154.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I3/148

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