Optimal configuration of user-side hybrid energy storage based on bi-level programming model

doi:10.19799/j.cnki.2095-4239.2021.0508

Abstract

Abstract:

Utilizing the peak-to-valley price difference on the user side, optimizing the configuration of energy storage systems and adequate dispatching can reduce the cost of electricity. Herein, we propose a two-level planning model for lead-acid battery-supercapacitor hybrid energy storage systems to calculate the annual return on energy storage investment. The outer objective function accounts for factors, such as energy storage peak shaving and valley filling income, demand defense income, and full life-cycle costs. Taking energy storage daily dispatch income as the inner objective function, the optimal energy storage period was studied. Energy storage performance constraints were considered during the development of the model to limit the daily charge and discharge times for different energy storage components according to the various properties of different energy storage components. According to the actual load of users in a certain place, the two-level programming model is solved by particle swarm algorithm and CPLEX solvers. We compare the rated power and capacity configurations of hybrid and single energy storage systems and verify the monthly comprehensive income of the hybrid energy storage model. The annual return on investment for the hybrid energy storage model is better than that of the single energy storage model. Furthermore, we compare the annual return on investment of different types of batteries and give suggestions for energy storage configuration planning.

Key words: hybrid energy storage system, full life-cycle cost, two-level programming, particle swarm algorithm

CLC Number:

TM 711

Bin GUO, Jie XING, Fei YAO, Xiaomin JING. Optimal configuration of user-side hybrid energy storage based on bi-level programming model[J]. Energy Storage Science and Technology, 2022, 11(2): 615-622.

Figures/Tables 9

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指标		本文混合储能系统	铅酸储能
月综合收益/万元		7.68	5.91
全生命周期成本/万元		565	457.6
年投资回报率/%		6.72	4.08
配置容量/kW	铅酸电池	3183	3051
功率/kW	超级电容	942	—

参数	铅酸电池	超级电容器	铁锂电池	全钒液流电池	钠硫电池
功率单价/元·kW^-1	400	1000	600	1085	420
容量单价/元·(kWh)^-1	600	27000	1600	3720	1400
维护单价/元·(kWh)^-1	0.05	0.05	124	124	110

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