引用本文:张小莲,陈冲,张仰飞,郝思鹏,孙啊传,武启川.考虑充放电不平衡的风电功率平滑电池分组控制[J].控制理论与应用,2022,39(3):449~458.[点击复制]
ZHANG Xiao-lian,CHEN Chong,ZHANG Yang-fei,HAO Si-peng,SUN A-chuan,WU Qi-chuan.Battery grouping control for wind power smoothing considering unbalanced charging and discharging[J].Control Theory and Technology,2022,39(3):449~458.[点击复制]
考虑充放电不平衡的风电功率平滑电池分组控制
Battery grouping control for wind power smoothing considering unbalanced charging and discharging
摘要点击 1677  全文点击 538  投稿时间：2021-07-03  修订日期：2021-11-08
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DOI编号  10.7641/CTA.2021.10587
  2022,39(3):449-458
中文关键词  风电功率平滑  电池分组控制  低通滤波  充放电不平衡  电池寿命衰减程度
英文关键词  wind power smoothing  battery grouping control  low-pass filter  unbalanced charging and discharging  the degree of battery life decay
基金项目  国家自然科学基金项目(51977111, 61673213)资助.
作者单位邮编
张小莲* 南京工程学院 电力工程学院 211167
陈冲 南京工程学院 电力工程学院 211167
张仰飞 南京工程学院 电力工程学院 211167
郝思鹏 南京工程学院 电力工程学院 211167
孙啊传 南京工程学院 电力工程学院 211167
武启川 南京工程学院 电力工程学院 211167
中文摘要
      平滑风电场输出功率能够有效减小风电场并网对电力系统的影响. 为改善电池分组控制实现风电功率平 滑过程中的电池组充放电能量不平衡问题, 本文基于充放电不平衡度和寿命衰减指标, 分析得出了电池分组控制充 放电不平衡状态与电池寿命衰减之间的定量关系. 在此基础上, 针对充放电不平衡问题提出了一种考虑充放电不平 衡的改进控制策略. 根据低通滤波算法输出的并网目标功率控制电池组的出力, 并依据电池组的不平衡度指标以及 荷电状态实时修正滤波时间常数, 以维持电池组的平衡状态. 最后, 通过MATLAB/Simulink仿真和风–储实验平台, 验证了所提控制策略在风电功率平滑方面的有效性, 并且在改善电池组的不平衡度、充放电深度以及提高电池的 使用寿命上具备明显优势.
英文摘要
      Smoothing the output power of wind farms can effectively reduce the influence of grid-connection of wind farms on the power system. In order to improve the unbalanced charging and discharging energy of the battery pack during the wind power smoothing process in the battery grouping control, this paper analyzes and derives the quantitative relationship between the two in battery grouping control based on the charging and discharging unbalance and the degree of battery life decay. On this basis, an improved control strategy is proposed for the problem of imbalance of charging and discharging. The output of the battery pack is controlled according to the grid connected target power output by the low-pass filtering algorithm, and the filter time constant is corrected in real time according to the unbalance index and the state of charge of the battery pack to maintain the balance state of the battery pack. Finally, through MATLAB/Simulink simulation and wind storage experiment platform, the effectiveness of the proposed control strategy in smoothing wind power is verified, and it has obvious advantages in improving the unbalance of the battery pack, the depth of charge and discharge, and the service life of the battery.