Scheduling Optimization And Economic Analysis Of Multi-Energy Complementary System Based On The Integration Of Light Storage Hydrogen And Alcohol

With the proposed double carbon goal and the rapid development of new energy,the current problems of large-scale distribution,transportation and storage of renewable energy have become the focus of the energy industry research.Hydrogen energy is one of the main energy sources in the future.Hydrogen production through water electrolysis is an effective means to absorb renewable energy.Meanwhile,methanol,a clean fuel,as a derivative of hydrogen,can replace hydrogen for safe transportation and storage.Based on the above factors,this paper designs a multi-energy complementary system based on the integration of light storage hydrogen and alcohol,which combines renewable energy,hydrogen,methanol and other energy sources,and has certain economic benefits on the premise of ensuring the consumption of a large amount of renewable energy.In this paper,the system scheduling optimization and economic analysis were studied by establishing the model of the integrated system of optical hydrogen storage alcohol,and the economic scheduling model of the integrated system of optical hydrogen storage alcohol was established based on the carbon trading mechanism,so as to give full play to the economic and environmental benefits of the system.The main research contents of this paper are as follows:The optimization model of the integrated system of optical hydrogen storage and alcohol was constructed,and the mathematical output model of photovoltaic power generation,electrolytic cell,storage battery,hydrogen storage tank and methanol generation equipment was established.The mathematical model of optical hydrogen storage alcohol was established with the aim of maximizing the total revenue of the system while ensuring the reduction of light abandonment rate.The operation strategy of the integrated optical hydrogen storage and alcohol system in the grid-connected and isolated state is analyzed.The model was solved by the improved sparrow search algorithm,and the results of equipment configuration and scheduling in different scenarios were compared by calculating examples.It was proved that the integrated system of optical hydrogen storage and alcohol was better in the case of interaction with the power grid.The stable production and sale of methanol through electrolytic cells and methanol generation equipment consumed a large amount of renewable energy and had certain economic benefits.The influences of methanol price,oxygen price,carbon price and equipment cost on total income were analyzed.An economic scheduling model for an integrated system of optical hydrogen storage and alcohol is established considering carbon trading mechanism.Carbon trading cost was added into the objective function to analyze the system configuration and operation scheduling under the influence of carbon trading.The numerical example shows that the integrated system of optical hydrogen storage and alcohol can obtain additional income and reduce carbon dioxide emissions under the carbon trading mechanism.The total annual revenue of the system increases by 2.18 million yuan and carbon emissions decrease by 1257t.The influence of the change of main parameters on the carbon emission and total revenue of the system was analyzed.At the same time,the comparison of the benefits of green methanol and coal-to-methanol under the carbon trading mechanism was studied.When the carbon price was 300 yuan/t,the benefits of methanol prepared by the integrated system of optical hydrogen storage alcohol could be comparable to that of coal-to-methanol.