Research On Benefits Evaluation Of Wind-hydrogen-CCHP System

In recent years,the utilization of clean energy such as wind power has attracted widespread attention.Proton exchange membrane electrolytic cell has sensitive reaction and can absorb fluctuating power well.The reaction product hydrogen as a new clean fuel is beneficial to road emission reduction.In this paper,Wind-Hydrogen-CCHP system is established,and the benefits of this system are evaluated from multiple perspectives.Firstly,this paper studies and discusses the configuration scheme of each module of the system,and establishes models of the Wind-Hydrogen-CCHP system successively.A residential building in Dalian City is taken as a case study.Taking economy as the optimization goal,three typical days are selected to optimize the annual total cost of the system.After data collection,the production and consumption of cooling,heating,power and hydrogen in the system are analyzed from four aspects: power balance,thermal balance,cold capacity balance and hydrogen balance.Secondly,the total annual cost,primary energy consumption and carbon dioxide emissions of the Wind-Hydrogen-CCHP system and the three control systems are calculated on the basis of the same cold,hot and electric hydrogen supply.Through systematic comparison,comprehensive research shows that the Wind-Hydrogen-CCHP system has advantages in three aspects of economy,energy saving and emission reduction.Finally,according to the previous study on the system,it is found that the system has power redundancy and insufficient heat in some periods.The Wind-Hydrogen-CCHP system is improved to optimize the system equipment configuration and add equipment that can convert redundant power into heat.Through the analysis of the optimization results of the improved Wind-Hydrogen-CCHP system,the results show that the economy,energy saving and emission reduction of the improved Wind-Hydrogen-CCHP system have been significantly improved.Through sensitivity analysis of the improved Wind-Hydrogen-CCHP system,it is found that the price of hydrogen,hydrogenation station and scale of wind turbine have different effects on the system.