高电压技术2024，Vol.50Issue(11)：5142-5150,中插15,10.DOI:10.13336/j.1003-6520.hve.20230093
基于VSG的微电网非等容锂电池SOC均衡方案
SOC Balancing Scheme of Non-equal Capacity Lithium Battery in Microgrid Based on VSG
摘要
Abstract
The traditional virtual synchronous generator(VSG)control scheme and the existing VSG-based state of charge(SOC)balancing scheme of the microgrid lithium battery inverter cannot achieve SOC balancing of non-equal ca-pacity lithium batteries.In order to achieve SOC balancing of non-equal capacity lithium batteries,a non-equal capacity lithium battery SOC balancing scheme based on VSG control is proposed.By modifying the traditional VSG control pa-rameters and line impedance parameters,the inverter output active power is proportional to the battery capacity,eliminating the influence of capacity on SOC,and then the inverter output active power with SOC is adjusted as the vari-able to achieve SOC balancing for non-equal capacity lithium batteries.In addition,a VSG small signal model is established to analyze the influence of control parameters on system stability.Finally,the Matlab/Simulink simulation software and experimental platform are used for simulation and experimental verification.The results show that the pro-posed scheme can be adopted to achieve SOC balancing of multiple equal and non-equal capacity lithium batteries,extend the service life of lithium batteries.It is verified that the control parameters can affect the system stability.关键词
微电网/非等容锂电池/虚拟同步发电机/功率分配/荷电状态均衡/小信号建模Key words
microgrid/non-equal capacity lithium battery/virtual synchronous generator/power distribution/state of charge balancing/small signal modeling引用本文复制引用
吴青峰,褚晓林,刘立群,何俊强,薄利明..基于VSG的微电网非等容锂电池SOC均衡方案[J].高电压技术,2024,50(11):5142-5150,中插15,10.基金项目
国家重点研发计划(2018YFA0707305) （2018YFA0707305）
山西省高等学校科技创新项目(2021L289) （2021L289）
国网山西省电力公司科技项目(520530200015).Project supported by National Key R&D Program of China(2018YFA0707305),Scientific and Technological Innovation Projects of Higher Institutions in Shanxi Province(2021L289),Science and Technology Project of State Grid Shanxi Electric Power Company(520530200015). （520530200015）
