| 引用本文: | 邵成成,王锡凡,王秀丽.发电成本最小化的电动汽车分布式充放电控制[J].电力自动化设备,2014,34(11): |
| SHAO Chengcheng,WANG Xifan,WANG Xiuli.Decentralized EV charge／discharge control with minimum generation cost[J].Electric Power Automation Equipment,2014,34(11): |
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| 摘要: |
| 分布式充放电控制在降低问题求解难度、保护用户隐私方面具有集中式控制无法比拟的优势。给出了分布式充放电控制一般流程。针对现有方法仅能平抑负荷波动的局限性，提出了一种基于拉格朗日松弛法的分布式充放电控制方法，实现电动汽车与发电机组的协调运行，降低发电成本。该方法以对偶因子作为调度信号，通过对偶因子的更新逐渐逼近集中控制最优解。IEEE-RTS1979算例分析证实，该方法降低发电成本的效益更为显著，对大规模电动汽车群适应性更强；能够解决目标函数非凸、约束耦合的发电成本最小化问题，适用范围更广。 |
| 关键词: 电动汽车 分布式控制 充放电控制 拉格朗日松弛法 发电成本 优化 |
| DOI： |
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| Decentralized EV charge／discharge control with minimum generation cost |
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SHAO Chengcheng, WANG Xifan, WANG Xiuli
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State Key Laboratory of Electrical Insulation and Power Equipment，Xi’an Jiaotong University，
Xi’an 710049，China
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| Abstract: |
| The decentralized control of charge／discharge is much better than the centralized control in computation simplicity and privacy protection. A general flowchart of decentralized charge／discharge control is presented. As the existing decentralized charge／discharge control methods only can suppress load fluctuation，a method based on the Lagrangian relaxation is proposed to realize the coordinated operation between EV（Electric Vehicle） and generator and reduce the generation cost. As the dispatch signals，the dual factors are updated for gradual approaching to the optimal solution of centralized control. Case study of IEEE-RTS1979 verifies that，being more adaptive to EV groups，the proposed method reduces the generation cost obviously；being capable of solving the problem of generation cost minimization with the non-convex and constraint-coupled objective function，the proposed method has larger applications. |
| Key words: electric vehicles decentralized control charge／discharge control Lagrangian relaxation gene-ration cost optimization |
