CAPACITY OPTIMIZATION CONFIGURATION OF EQUIPMENT IN HYDROGEN REFUELING STATION CONSIDERING MICROGRID RESIDUAL ELECTRICITY TO HYDROGEN PRODUCTION
In view of the phenomenon of"abandoned wind power","abandoned photovoltaics"and"abandoned hydropower"in microgrids and the increasing demand for hydrogen load,a certain capacity of hydrogen production/storage equipment is considered to be deployed in the offsite hydrogen refueling station to centralize the consumption of surplus electricity from microgrids.Through the research of the topology and mathematical model of microgrid-hydrogen refueling station system(MHSS)containing wind power,photovoltaic,small hydropower,as well as electrolysis tank,hydrogen storage tank and reformer,a capacity optimization configuration model of hydrogen production/storage equipment with the objective of minimizing the total net present cost of the whole life cycle of the hydrogen refueling station is established,and the combined electric-hydrogen operation model for residual electricity to hydrogen-green hydrogen first(RETH-GHF)is proposed.In the example,the adaptive simulated annealing particle swarm optimization(ASAPSO)algorithm is applied to simulate the system with the practical scenario.By comparing the configuration results and cost-benefit details of offsite centralized/onsite decentralized hydrogen production schemes of microgrids,it is proved that the scheme of offsite centralized hydrogen production is more economical in the example scenario,and the economics of the two schemes of hydrogen production have been re-compared by taking into account the impact of industrial electricity price,hydrogen and natural gas price fluctuations on the total net present cost of the hydrogen refueling station throughout its life cycle,and finally,the rationality of the capacity optimization configuration model for hydrogen production/storage equipment in the hydrogen refueling station is verified with system operation of typical days in four seasons.
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