Optimal Operation Strategy Of Hydrogen-containing Integrated Energy System Considering Energy Sharing

With energy shortage and environmental pollution problems becoming more and more prominent,vigorously developing hydrogen-containing integrated energy systems is an effective way to achieve sustainable energy development.Hydrogen-containing integrated energy system integrates different heterogeneous energy sources with advanced conversion equipment,and improves the utilization rate of electricity,heat,gas,hydrogen,and other energy sources through the stepwise utilization of energy,which shows obvious advantages in terms of environmental protection and economy,and is an ideal way to promote the deep decarbonization of future energy systems.However,the interests of participants are more diversified,especially with the promotion of distributed generation policy,consumers in the energy market have evolved into distributed producers and consumers who can both produce and consume electricity.Due to the uncertainty of renewable energy equipment output and the randomness of load,distributed producers and consumers have energy deviation in time and space,leading to the overall imbalance of supply and demand in the market.For this reason,it is especially important to portray the operation strategies of each player in the free market from a new perspective.As an energy management strategy,energy sharing can improve the interactive interconnection among distributed producers and consumers and become an important means for distributed producer-consumer groups to participate in market regulation.Therefore,this paper integrates the game theory approach and adopts the energy sharing mechanism to guide the energy production and consumption behaviors of energy suppliers,energy operators,and distributed producer-consumer groups,and conducts research around the energy management and trading operation strategies of integrated energy systems containing hydrogen,working as follows:Firstly,the typical structure of a hydrogen-containing integrated energy system is introduced,focusing on the characteristics of core equipment such as electrolyzer,methane generator,cogeneration unit,gas boiler,and hydrogen fuel cell,and the corresponding mathematical model is established.The carbon trading mechanism is introduced,and a mathematical model of the hydrogen-containing integrated energy system considering economy and carbon emission reduction is established based on this model to lay the model foundation for the subsequent optimization of operation.Then,in order to reduce the carbon emission of the system,an operation strategy of the integrated energy system containing hydrogen is developed based on the master-slave game considering both economy and carbon emission reduction by combining the stepped carbon trading mechanism.The equilibrium interaction strategy is solved with the energy operator as the leader and the energy supplier as the follower,and the impact of different carbon trading mechanism parameters on the system is verified by arithmetic examples.The results show that the above operation strategy achieves the most profitable operation for each subject while reducing the carbon emissions of the system.Finally,based on the system supply and demand game considering the carbon trading mechanism,an optimal operation strategy of the integrated energy system containing hydrogen is formulated by adopting the energy sharing mechanism within the distributed group of producers and consumers at the end-user side.Based on the game theory,a game model consisting of a distributed group of producers and consumers,energy suppliers and energy operators is established to optimize the energy management strategy and trading operation strategy of both supply and demand sides by considering the wishes of each party,with energy operators as the leaders and distributed group of producers and consumers and energy suppliers as the followers.The results show that the proposed strategy further improves the advantages of the system in terms of flexible energy use,carbon emission reduction and revenue enhancement.