| Due to the dual-carbon policy of "carbon peaking and carbon neutrality" proposed by the state,the demand for clean energy continues to increase.As an emerging power storage method,hydrogen energy has the advantages of cleanliness,high efficiency and large energy storage capacity.Hydrogen energy can meet the fuel supply of hydrogen vehicles.The production of green hydrogen by electrolysis of water through renewable energy power generation has received more and more attention.Therefore,optimizing the capacity of the DC microgrid for wind-solar hybrid hydrogen production can not only meet the needs of electric power and hydrogen energy,but also reduce investment costs.Based on the background of "green,low-carbon,and environmental protection" of the Beijing Winter Olympics,the paper designs a wind-solar hybrid electrolysis water hydrogen production system to provide fuel for hydrogen energy vehicles in a certain place in Hebei Province.The optimal capacity allocation problem of the system is studied to obtain the optimal capacity allocation scheme of the system.The main research contents are as follows:Firstly,the location selection of wind turbines,photovoltaics and local natural resources are analyzed,and the principles of wind turbines,solar photovoltaic cells,electrolyzers,hydrogen storage tanks,lithium batteries and converters are analyzed in detail,and the corresponding mathematical The model has done a good job of basic work for the subsequent microgrid operation and scheduling strategy in the actual simulation.Secondly,the topological structure of the microgrid is analyzed,and a scheme is proposed for the system configuration objectives,system constraints,and equipment constraints.The operation and scheduling strategy of the microgrid is given,including the strategy of the power generation unit and the strategy of the energy storage unit,which lays a theoretical foundation for the application of the economic operation of the microgrid in the specific example below.Thirdly,based on the HOMER optimization software,the lowest total net cash cost is selected as the objective function of system optimization,and a wind-solar hybrid microgrid with a hydrogen production system is established and simulated.Through the simulation software,a number of capacity optimization schemes of the microgrid system are obtained and compared,and finally the system cost,system cash flow,power generation unit output,hydrogen storage capacity of the hydrogen storage tank and the SOC state of the energy storage system of the optimal capacity configuration scheme are analyzed.The analysis was carried out,and the displacement and carbon reduction ability of hydrogen on gasoline was analyzed.The simulation results prove that the method proposed in this chapter can effectively optimize the capacity of the microgrid with hydrogen production system,which provides a certain reference for the optimal configuration of the capacity of the microgrid system.Then,a system capacity optimization method is proposed to improve the black hole algorithm.On the basis of the comprehensive model of the wind-solar hybrid hydrogen production system,an improved black hole algorithm is used to optimize the total net cost of the microgrid with a single objective.Then,the objective function of multi-objective optimization is analyzed,and the improved black hole algorithm is used to comprehensively optimize the total net cash cost and power shortage probability of the system.The experiment proves that the adopted optimization algorithm can effectively optimize the system capacity.Finally,the improved black hole algorithm and the optimization results of HOMER software are analyzed and compared.Finally,the reliability of the wind-solar hybrid water electrolysis hydrogen production system is analyzed,and the engineering progress of the wind and solar hybrid water electrolysis hydrogen production system is introduced. |
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