基于自适应步长ADMM的直流配电网分布式最优潮流

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Abstract Direct current distribution network has broad prospects,and its optimal power flow(OPF)problem has important significance to economical operation.Following the advances in second-order cone programming(SOCP)convex optimization,this paper establishes the SOCP-OPF model in which the constraints of voltages,currents and power are considered for direct current distribution network in redial topology.In addition,a distributed OPF calculating method based on alternating direction method of multipliers(ADMM)is proposed to overcome many difficulties faced by traditional centralized dispatch method.Compared with existed researches,each bus is equipped with a computing agent and the agents exchange simple information with neighbors in every iteration,then solve the optimization problem in a parallel pattern without centralized global coordination.The SOCP-OPF model takes the current limits on the lines into consideration,which makes the model more practical.The proposed method also has a dynamic step size adjusting strategy to improve the efficiency of calculating.Numerical simulations on typical system show the good convergence and accuracy of the algorithm.

Key words： DC distribution network distributed optimization optimal power flow(OPF) alternating direction method of multipliers(ADMM) dynamic step size

Received: 12 May 2016 Published: 20 June 2017

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TM744

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	Articles by authors
	Han Yuxin
	Chen Laijun
	Wang Zhaojian
	Liu Wei
	Mei Shengwei

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Han Yuxin,Chen Laijun,Wang Zhaojian等. Distributed Optimal Power Flow in Direct Current Distribution Network Based on Alternative Direction Method of Multipliers with Dynamic Step Size[J]. Transactions of China Electrotechnical Society, 2017, 32(11): 26-37.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I11/26

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