考虑电压稳定裕度约束的点估计随机最优无功调度方法

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Abstract Conventional optimal reactive power dispatch approaches operate mostly in deterministic form where the power injections are known and fixed.However,in practice,power injections,especially from intermittent renewable sources,and demands are uncertain.Therefore,this paper develops a voltage stability margin constrained stochastic optimal reactive power dispatch (VC-SORPD) method.The chance constrains have been transferred into the deterministic constraints by the stochastic optimal reactive power method based on the point estimation.Then the programming is solved through the genetic algorithm with the improved conjugate gradient operator.Simulation results on several cases demonstrate that the proposed method is able to prevent under and over-compensation and increase the load margin at a cost of a small but acceptable increase of active power losses.

Key words： Voltage stability margin stochastic optimal reactive power dispatch chance-constrained programing point estimation stochastic power flow advanced genetic algorithm

Received: 19 November 2014 Published: 25 May 2015

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TM714

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	Articles by authors
	Li Jun
	Deng Dashang
	Fang Xinyan
	Fang Sidun
	Wen Libin

Cite this article:

Li Jun,Deng Dashang,Fang Xinyan等. Stochastic Optimal Reactive Power Dispatch Method Based on Point Estimation Considering Voltage Stability Margins[J]. Transactions of China Electrotechnical Society, 2015, 30(7): 27-33.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I7/27

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