基于纵横交叉优化的可重构电池组环流抑制策略  

Circulation Suppression Strategy for Reconfigurable Battery Packs Based on Crisscross Optimization

作　　者：陈思哲[1] 王玉乐[1] 陶以彬[2,3] 常乐 孟安波 章云[1] CHEN Sizhe;WANG Yule;TAO Yibin;CHANG Le;MENG Anbo;ZHANG Yun(School of Automation,Guangdong University of Technology,Guangzhou 510006,Guangdong Province,China;School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong Province,China;China Electric Power Research Institute,Nanjing 210003,Jiangsu Province,China)

机构地区：[1]广东工业大学自动化学院,广东省广州市510006 [2]华南理工大学电力学院,广东省广州市510640 [3]中国电力科学研究院有限公司,江苏省南京市210003

出　　处：《电网技术》2022年第1期165-174,共10页Power System Technology

基　　金：国家自然科学基金项目(61802070)。

摘　　要：退役电池之间巨大的特性差异会降低储能系统的有效容量和安全性,严重阻碍电池的梯次利用。可重构电池组能灵活切换电池之间的连接方式,是应对电池特性差异的有效方案。然而,电压差异导致的电池组内部环流,会降低电能效率和缩短电池寿命,并引发局部过热等安全问题。以构建最多并联路径和抑制环流为目标,提出了可重构电池组的路径组合优化策略。建立了优化模型,并根据模型特征设计了离散二进制纵横交叉优化算法,克服了路径组合优化面临的非确定性多项式难题。最后,通过仿真和实验验证,证明了所提出的路径组合优化策略能有效抑制环流。The significant differences of characteristics among the retired batteries reduce the effective capacity and safety of energy storage system, which severely prevent the reusing of retired batteries. The reconfigurable battery pack,which can flexibly switch the connections among batteries, is an effective solution to cope with the differences of their characteristics. However, the circulating currents in the battery pack, which are caused by the voltage differences among the batteries, will reduce the energy efficiency and the batteries’ life-cycle, even cause safety problems such as local overheating. In this paper, an optimization strategy for the path combination of the reconfigurable battery pack is proposed to maximize the paralleled branches and suppress the circulating currents. An optimization model is established, based on which a round binary crisscross optimization algorithm is designed. Hence,overcoming the non-deterministic polynomia hard problem in the path combination optimization of the reconfigurable battery pack. Finally, the simulation and experiment results verify that the proposed path combination optimization strategy is able to effectively suppress circulating currents.

关 键 词：纵横交叉优化 可重构电池组 环流 退役电池梯次利用 非确定性多项式难题 

分 类 号：TM721[电气工程—电力系统及自动化]