Distributed Optimal Power Flow in Direct Current Distribution Network Based on Alternative Direction Method of Multipliers with Dynamic Step Size
Han Yuxin1, Chen Laijun1, Wang Zhaojian1, Liu Wei2, Mei Shengwei1
1.State Key Lab of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing 100084 China; 2.Shaanxi Regional Electric Power Group Co.Ltd. Xi'an 710061 China
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.
韩禹歆, 陈来军, 王召健, 刘炜, 梅生伟. 基于自适应步长ADMM的直流配电网分布式最优潮流[J]. 电工技术学报, 2017, 32(11): 26-37.
Han Yuxin, Chen Laijun, Wang Zhaojian, Liu Wei, Mei Shengwei. Distributed Optimal Power Flow in Direct Current Distribution Network Based on Alternative Direction Method of Multipliers with Dynamic Step Size. Transactions of China Electrotechnical Society, 2017, 32(11): 26-37.
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2017, Vol. 32 
