Zhan Kaiqiao, Hu Zechun, Song Yong-hua, X. Zhiwei, Jia Long, Zhang,Hongcai
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A Coordinated Charging Strategy for Electric Vehicle Three-phase Load Balance
Three-phase unbalance may occur in distribution networks with large-scale charging loads of electric vehicles (EVs) plugged in, which significantly threatens the operation of power networks. Most coordinated EVs charging strategies are based on the assumption of single-phase power networks to the neglect of three-phase unbalance problems. A coordinated charging strategy for EVs considering three-phase load balance is proposed. In the outer layer of the proposed strategy, the three-phase backward/forward sweep load flow algorithm is used to iteratively update the node voltages. In the inner layer of the proposed strategy, a three-phase coordinated EV charging optimal model is created and solved based on the updated node voltages. By optimizing the charging power and charging periods of EVs, the objectives of the optimal model, power loss reduction and the three-phase load balance, are achieved. Simulation results show that the proposed strategy can eliminate the three-phase unbalance problems, reduce power losses and flatten the load curve, guaranteeing the economics and security of operation of the power network.
电力系统自动化Energy-Energy Engineering and Power Technology
CiteScore
8.20
自引率
0.00%
发文量
15032
期刊介绍:
Founded in 1977, Power System Automation is a well-known journal in the discipline of electrical engineering in China. At present, it has been issued to all provinces, cities, autonomous regions, Hong Kong, Macao and Taiwan, and abroad to dozens of countries in North America, Europe and Asia-Pacific region, with a large number of readers at home and abroad. Power System Automation takes “based on China, facing the world, seeking truth and innovation, promoting scientific and technological progress in the field of electric power and energy” as the purpose of the journal, mainly for the professional and technical personnel, teachers and students engaged in scientific research, design, operation, testing, manufacturing, management and marketing in the electric power industry and higher education institutions as well as electric power users, and focuses on hotspots of the industry's development and the It focuses on the hot and difficult issues of the industry. It focuses on the hot and difficult issues of the industry, both academic and forward-looking, practical and oriented, and at the same time emphasizes and encourages technical exchanges of experiences, improvements and innovations from the front line of scientific research and production.