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期刊号: CN32-1800/TM| ISSN1007-3175

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计及电价优化的电动汽车与风电协同优化策略

来源:电工电气发布时间:2023-07-01 10:01 浏览次数:196

计及电价优化的电动汽车与风电协同优化策略

潘韦如1,魏哲2,孙琪3,黄文龙3,王晓东3
(1 鲁东大学 蔚山船舶与海洋学院,山东 烟台 264025;
2 国网山东省电力公司超高压公司,山东 济南 250118;
3 国网山东省电力公司淄博供电分公司,山东 淄博 255000)
 
    摘 要:针对风电出力间歇性和大量电动汽车随机接入配电网的充放电行为会造成配电网功率波动等问题,提出了基于动态分时电价的电动汽车与风电协同优化调度策略。建立了动力电池损耗和风电出力模型,完善了用户和电网两侧的需求;考虑电网稳定性以及不同时段内电动汽车用户进行充放电的成本与收益,构建了以用户充电成本、配电网综合负荷波动以及网损成本最小为目标的数学模型。为解决多变量、多目标约束的优化问题,采取最大模糊满意度法将多目标问题进行归一化处理;利用改进的正余弦优化算法,将充、放电功率和充、放电电价等作为变量进行寻优。IEEE 33 节点算例多场景仿真结果表明,所提策略可以随电动汽车入网信息的变化动态调整电价,增强风电消纳能力,同时在减小峰谷差、减少充电成本和降低网损等方面效果明显。
    关键词: 电动汽车;风电协同优化调度;动态电价;正余弦优化算法
    中图分类号:TM715 ;U469.72     文献标识码:A     文章编号:1007-3175(2023)06-0014-08
 
Collaborative Optimal Strategy of Electric Vehicles and Wind Power with the
Consideration of Electricity Price Optimization
 
PAN Wei-ru1, WEI Zhe2, SUN Qi3, HUANG Wen-long3, WANG Xiao-dong3
(1 Ulsan Ship and Ocean College, Ludong University, Yantai 264025, China;
2 State Grid Shandong Electric Extrahigh Voltage Company, Jinan 250118, China;
3 State Grid Shandong Electric Power Company Zibo Power Supply Branch Company, Zibo 255000, China)
 
    Abstract: In order to solve the problems of intermittent wind power output and distribution network power fluctuation caused by a large number of electric vehicles randomly accessing to the distribution network to charge and discharge, the paper proposes a collaborative optimal scheduling strategy of electric vehicles and wind power based on dynamic time-of-use price. First, models of power battery loss and wind power output are established to improve the needs of both users and power grids. Second, with the consideration of power grid stability and costs and benefits of electric vehicle users’ charging and discharging in different periods, a mathematical model is built to realize the goal of minimizing the user charging costs,the comprehensive load fluctuation of the distribution network and the network loss costs. Third, to optimize the multivariable and multi-objective constraints, the maximum fuzzy satisfaction method is adopted to normalize the multi-objective problem; then, the improved sine cosine optimization algorithm is adopted to optimize the charging and discharging power and price which are used as variables. According to the multi-scenario simulation results of IEEE 33 node example, this strategy is able to dynamically adjust the electricity price with the change of electric vehicle network access, enhance the wind power consumption, and have better effects on reducing peak valley difference, charging cost and network loss.
    Key words: electric vehicles; wind power collaborative optimal scheduling; dynamic price; sine cosine optimization algorithm
 
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