吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (4): 1490-1495.doi: 10.13229/j.cnki.jdxbgxb20200367

• 通信与控制工程 • 上一篇    

电动汽车充电站内的实时最优功率分配

王聪1(),马彦1,王国光2   

  1. 1.吉林大学 通信工程学院，长春 130022
    2.吉林大学 物理学院，长春 130012
  • 收稿日期:2020-05-24 出版日期:2021-07-01 发布日期:2021-07-14
  • 作者简介:王聪（1990-），男，副教授，博士. 研究方向：智能系统. E-mail： wangcong2020@jlu.edu.cn
  • 基金资助:
    国家自然科学基金项目(U1864201)

Real-time optimal power allocation inside electric-vehicle charging stations

Cong WANG1(),Yan MA1,Guo-guang WANG2   

  1. 1.College of Communication Engineering，Jilin University，Changchun 130022，China
    2.College of Physics，Jilin University，Changchun 130012，China
  • Received:2020-05-24 Online:2021-07-01 Published:2021-07-14

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摘要：

随着电动汽车的普及，急需为充电站内的电动汽车设计实时最优的功率分配。针对这一需求，提供了一种可行的功率分配方案。首先，将功率分配问题描述为一个具有线性约束的非线性优化问题。该优化问题中的目标函数由对数效用函数构成。然后，从数学上证明该优化问题的最优解是用户友好的，并为实时获得最优解提供了高效的算法。最后，通过数值仿真验证了本文功率分配方案的性能。

关键词: 优化与控制, 电动汽车充电站, 实时算法, 最优化理论

Abstract:

In recent years, the number of electric vehicles has been drastically increasing. This situation gives rise to an urgent demand for designing a real-time optimal power allocation inside electric-vehicle charging stations. The goal of this paper is to present one possibility that addresses the aforementioned demand. First, the paper formulates the power-allocation problem as a linearly constrained non-linear optimization where the objective function is constructed via logarithm utility functions. Second, the paper mathematically shows that the optimal solution to the formulated power-allocation problem is user-friendly. Third, the paper presents an efficient algorithm that is able to obtain the optimal solution in real time. Finally, the paper validates the performance of the proposed power allocation through numerical simulations.

Key words: optimization and control, electric-vehicle charging station, real-time algorithm, optimization theory

中图分类号: 

  • TP13

图1

被动配送电网与主动配送电网"

图2

与充电站相关的功率"

图3

OPT最优解的计算方法"

图4

求解OPT计算过程实例"

表1

实时性仿真 (ns)"

小型充电站中型充电站大型充电站
小型车1.123.6214.58
中型车1.534.7920.28
大型车1.867.8325.53
小、中型车2.4514.47104.43
小、大型车2.7618.11191.37
中、大型车2.3816.64142.75
全部类型车2.4925.25310.08
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