中国电机工程学报2024，Vol.44Issue(13)：5185-5195,中插14,12.DOI:10.13334/j.0258-8013.pcsee.230396
考虑能量效率和SOC均衡的电池储能电站双层功率分配策略
Double-layer Power Distribution Strategy for Battery Storage Power Station Considering Energy Efficiency and State-of-charge Balance
摘要
Abstract
When the electrochemical energy storage power station is applied to frequency modulation,voltage regulation,and other power fluctuation conditions,there are problems such as low energy efficiency and unbalanced state of charge(SOC).This paper proposes a double-layer power distribution strategy for battery storage power stations considering energy efficiency and SOC balance,which mainly includes the unit optimization layer and the subsystem optimization layer:The unit optimization layer calculates the quantity and number of actual operating units through charging/discharging priority partition,establishes an optimization model aiming at the minimum energy consumption of the energy storage units,and uses genetic algorithm(GA)to solve the optimal solution set;The battery energy consumption model based on electrochemical impedance is introduced into the subsystem optimization layer,and the multi-objective optimization model is established with the minimum energy consumption and SOC balance as the objectives,and the non-dominated sorting genetic algorithms-II(NSGA-II)is used to solve the problem.The effectiveness of the proposed strategy is verified by using the actual parameters of a lithium battery energy storage power station in a region.The results show that compared with the SOC proportional distribution strategy and the single-layer power distribution strategy,the proposed strategy can achieve the maximum SOC balance while reducing the energy consumption of the power station,enhancing the two-way regulation ability of the power station,and improving the economy of the energy storage power station.关键词
储能电站/功率分配策略/能量效率/荷电状态均衡/非支配快速排序遗传算法Key words
energy storage plant/power allocation strategy/energy efficiency/state of charge(SOC)balance/(non-dominated sorting genetic algorithms-II(NSGA-II)分类
信息技术与安全科学引用本文复制引用
叶晖,李爱魁,田刚领,谢佳,李占军..考虑能量效率和SOC均衡的电池储能电站双层功率分配策略[J].中国电机工程学报,2024,44(13):5185-5195,中插14,12.基金项目
中国电气装备集团有限公司总部管理科技项目(CEE-2022-B-01-03-004-PG). Headquarters Management Technology Project of China Electric Equipment Group Co.,Ltd.(CEE-2022-B-01-03-004-PG). （CEE-2022-B-01-03-004-PG）
