Optimal Configuration of Island Microgrid Based on Hybrid Energy Storage
MA Haodong
LI Chunhua
ZHANG Yu
Abstract：To improve the energy utilization and operation reliability of microgrid containing renewable energy,and ensure the continuity of energy supply,a capacity allocation optimization scheme of microgrid based on hybrid energy storage is proposed.The main components of the system include photovoltaic panels,batteries,electrolytic cells,fuel cells and hydrogen tanks.Aiming at the complex coupling relationship between equipment in the system configuration optimization,a two-layer capacity configuration optimization scheme is designed.The first layer is configured with the capacity of photovoltaic panels,batteries and hydrogen tanks,and the second layer is configured with the capacity of electrolyzer and fuel cell.The improved NSGA-Ⅱ multi-objective algorithm uses the generation cost,load unsatisfied rate and light abandoned rate as the objective function to realize the equipment capacity al-location of the microgrid.The capacity allocation optimization experiment of microgrid based on battery,hydrogen tank and battery-hydrogen tank is designed.The results show that the light abandoned rate of hybrid system is reduced by 20%and 120%respectively than that of battery system and hydrogen storage system.Compared with the single-layer capacity allocation scheme,the two-layer capacity allocation scheme of the hybrid system reduces the generation cost by 0.296 0 USD/kWh,the load unsatisfied rate is re-duced by 1.693%,and the light abandoned rate is reduced by 5.679%.
Keywords：microgrid systemhybrid energy storagetwo-layer capacity configurationNSGA-Ⅱ
Publication Date：2025-07-20
Online Publishing Date：2025-09-25(First online date of this platform, not the publication date of the document)
Pages：6( 1868-1873 )