电力系统保护与控制2025，Vol.53Issue(1)：84-94,11.DOI:10.19783/j.cnki.pspc.240109
考虑线路阻抗和储能容量的孤岛直流微电网自适应SOC均衡
Adaptive SOC equalization of an islanded DC microgrid considering line impedance and energy storage capacity
摘要
Abstract
Because of the intermittent nature of renewable energy sources,energy storage units are widely used in islanded DC microgrids.To protect the energy storage units and prevent overcharging or deep discharging,it is necessary to implement balanced control of the state of charge(SOC)of the units.However,the differences in line impedance and capacity of each energy storage unit will affect the balance of the SOC.To address this issue,a SOC balancing control strategy for energy storage units based on a consensus algorithm and adaptive droop control is proposed.First,by defining the current proportional coefficients,a functional relationship between the droop coefficients of each energy storage unit and the SOC is established,achieving adaptive SOC balance of the energy storage units.The stability of the system is proved by the Routh criterion.Secondly,the proposed control strategy is compared with other control methods in the literature,and the impact of four different working conditions on SOC balance is considered.Finally,simulation analysis is carried out using Matlab/Simulink,verifying the effectiveness of the proposed control strategy.关键词
直流微电网/下垂控制/一致性算法/SOC均衡Key words
DC microgrid/droop control/consensus algorithm/SOC balance引用本文复制引用
刘鑫蕊,曹翰林,蓝良生,李新宇,王睿,孙秋野..考虑线路阻抗和储能容量的孤岛直流微电网自适应SOC均衡[J].电力系统保护与控制,2025,53(1):84-94,11.基金项目
This work is supported by the National Natural Science Foundation of China(No.62173074). 国家自然科学基金项目资助(62173074) （No.62173074）
国家重点研发计划项目资助(2018YFA0702200) （2018YFA0702200）
国家自然科学基础重点项目资助(U20A20190、U22B20115、U23B1018) （U20A20190、U22B20115、U23B1018）
广西壮族自治区教育厅人工智能与信息处理重点实验室资助(河池学院)(2022GXZDSY011) （河池学院）
