现代电力2024，Vol.41Issue(3)：547-556,10.DOI:10.19725/j.cnki.1007-2322.2022.0263
基于虚拟直流电机的分布式储能系统能量动态分配策略
Energy Dynamic Allocation Strategy of Distributed Energy Storage System Based on Virtual DC Machine
摘要
Abstract
To enhance the inertia of the distributed energy storage system in the DC microgrid,and achieve the state of charge(SOC)balance of each energy storage unit(ESU)in the case of line impedance mismatch,a dynamic energy allocation strategy of distributed energy storage system based on virtual DC machine(VDCM)was proposed.Firstly,the VDCM technology was applied to the energy storage side control using the output characteristics of VDC to enhance the anti-interfer-ence capability of the system,then,using the output character-istics of the armature loop equation to dynamically design the virtual armature resistance according to the energy distribution demand of the energy storage system,so that it can adaptively change with the SOC within the specified limits,and the output power of each converter in real-time,and the voltage drop ad-justment factor was introduced to dynamically fine-tune the vir-tual voltage drop of each converter to be equal,so as to com-pensate for the mismatch degree of the line impedance and real-ize the SOC equalization of each ESU.Secondly,a consensus algorithm was used to obtain the required average value inform-ation between adjacent ESUs,which improves the scalability of the system.Finally,a photovoltaic multi-energy storage DC mi-crogrid system model was built,and the simulation and experi-mental results verify the rationality and effectiveness of the pro-posed control strategy.关键词
直流微电网/荷电状态/虚拟直流电机/分布式储能系统/能量动态分配/虚拟电枢电阻/直流母线电压/压降调节因子Key words
DC microgrid/state of charge(SOC)/virtual DC machine(VDCM)/distributed energy storage system/dynamic energy distribution/virtual armature resistance/DC bus voltage/voltage drop adjustment factor分类
信息技术与安全科学引用本文复制引用
乔露,王鲁杨,李唯嘉,马海宁..基于虚拟直流电机的分布式储能系统能量动态分配策略[J].现代电力,2024,41(3):547-556,10.基金项目
上海绿色能源并网工程技术研究中心资助项目(13DZ2251900).Project Supported by the Shanghai Green Energy Grid-connected Engineering Technology Research Center(13DZ2251900). （13DZ2251900）
