电子测量技术ELECTRONICMEASUREMENTTECHNOLOGY第46卷第1期2023年1月DOI:10.19651/j.cnki.emt.2210266“锂离子电池-超级电容”混合储能系统的建模与状态估计�王冠1李相俊2孙振广1董立志2郑岳久1(1.上海理工大学机械工程学院上海200093;2.中国电力科学研究院有限公司北京100192)摘要:在混合储能系统中,状态估计是进行各储能元件间功率分配和控制策略调整的基础。为减小状态估计误差对后续能量管理的影响,以“锂离子电池-超级电容”混合储能系统为研究对象,进行建模仿真和精确状态估计。首先在辨识基本元件参数后,基于电路的物理结构,在MATLAB/Simulink环境中搭建了混合储能系统仿真模型,用于快速准确的模拟实物实验。然后综合复杂度和估计精度考虑,重新选择以整体形式的理念建立了电池组和超级电容组模型,用于配合“EKF-两点法”进行荷电状态与健康状态的联合估计。最后,经实验验证表明,状态估计误差都在5%以内,即建立的仿真模型能够准确反映元件运行特性且联合状态估计算法精度较高。关键词:混合储能系统;锂离子电池组;超级电容组;仿真模型;状态估计中图分类号:TM912文献标识码:A国家标准学科分类代码:460.99Modelingandstateestimationof"lithium-ionbattery-supercapacitor"hybridenergystoragesystemWangGuan1LiXiangjun2SunZhenguang1DongLizhi2ZhengYuejiu1(1.CollegeofMechanicalEngineering,UniversityofShanghaiforScienceandTechnology,Shanghai200093,China;2.ChinaElectricPowerResearchInstitute,Beijing100192,China)Abstract:Inhybridenergystoragesystems,stateestimationisthebasisforpowerallocationandcontrolstrategyadjustmentamongthestorageelements.Inordertoreducetheimpactofstateestimationerrorsonthesubsequentenergymanagement,ahybridenergystoragesystem"li-ionbattery-supercapacitor"isusedformodelingandsimulationandaccuratestateestimation.Firstly,afteridentifyingthebasiccomponentparameters,asimulationmodelofthehybridenergystoragesystemisbuiltinMATLAB/Simulinkenvironmentbasedonthephysicalstructureofthecircuitforfastandaccuratesimulationofthephysicalexperiment.Then,consideringthecomplexityandtheaccuracyofestimation,thebatterypackandthesupercapacitorpackaremodeledinaholisticform,andthejointestimationofchargestateandhealthstateiscarriedoutwiththe"EKF-two-pointmethod".Fi...
