考虑电池组不一致性的储能系统建模及仿真  

Modeling and Simulation of Battery Energy Storage System Considering Intrinsic Inconsistency

作　　者：范刘洋[1] 汪可友[1] 张宝群[2] 李国杰[1] 翟登辉[3] 王卫星[3] 

机构地区：[1]上海交通大学电子信息与电气工程学院,电力传输与功率变换控制教育部重点实验室,上海市200240 [2]国网北京市电力公司电力科学研究院,北京市100085 [3]许继集团有限公司,河南省许昌市461000

出　　处：《电力系统自动化》2016年第3期110-115,共6页Automation of Electric Power Systems

基　　金：国家高技术研究发展计划(863计划)资助项目(2014AA052003);国家自然科学基金资助项目(51307107,51477098);上海市科委资助项目(13231204002)

摘　　要：在当前电池组建模中,往往忽略内部参数差异,将其简化为单体进行仿真。但是,对于电池储能系统,其规模较大,内部单体参数往往差异明显,需要考虑不一致性建模。通过对电池单体和电池组进行循环寿命测试,研究电池老化过程中参数的变化规律。在此基础上,搭建了适合于储能电站优化设计、控制策略参考的考虑不一致性的电池储能系统的详细模型,并将该模型应用于储能系统平抑风电波动的仿真。仿真结果显示,详细模型能够比简化模型提供更优的控制参考。The battery energy storage system（BESS）is considered an effective method for wind power stabilization.The inconsistency of BESS is always ignored in current simulations with the whole BESS simplified as a battery cell.However,in practice,because of the large scale of batteries,the cell to cell variation is quite common in BESS.In the circumstances,the simplified model would cause overcharge or discharge,which significantly shortens the lifetime of batteries.This paper discusses the deterioration of battery pack and develops a detailed Thevenin model for BESS with distinct inconsistency.The presented model is suitable for power electronic design and offers useful information for control strategy.The proposed model is applied to fluctuation stabilization of wind power to show its advantage over the simplified model.

关 键 词：电池储能系统 不一致性 风电波动 老化 

分 类 号：TM910[电气工程—电力电子与电力传动]