Research On Integrated Energy Microgrid Based On Compressed Air Energy Storage System

In China,the development of energy industry has entered a new stage,and the development of energy structure and energy combination has entered a new stage.Wind power generation has gradually developed into a new type of clean energy because of its advantages of sustainable utilization and no environmental pollution.However,with the development of wind power generation technology,the utilization rate of resources is low,the problem of abandoning wind is prominent,and the difficulty of absorbing wind power into the power grid has become the bottleneck of the rapid development of wind farms.In order to accelerate the consumption of wind power and reduce the problem of wind abandonment,an electric thermal integrated energy system based on "electric thermal integration" is proposed,which realizes the cooperative work of multiple different energies,so as to achieve better energy-saving effect.Based on wind power generation,this paper establishes the economic planning model of power system generated by new high-pressure air energy storage（aa-caes）including biomass cogeneration heating and power（BCHP）.Firstly,a power integrated energy cycle power generation system composed of thermal power station and thermal power plant is introduced in detail;Wind farm,heat storage,BCHP and aa-caes power plants The working mechanism and advantages of the unit,heat storage device,BCHP and aa-caes are introduced,and the above four units are modeled from the aspect of operation mode.Secondly,the economic planning model of power thermal integrated power generation system is established,the absorption mechanism of heat collection device,BCHP and aa-caes power plants is studied,and the relationship between heat storage and heat release rate of BCHP and aa-caes power plants is obtained when the wind is fully absorbed.O n this basis,the role of thermal devices,BCHP and aa-caes power plants in wind energy dissipation is discussed in detail by using the simulation method,and the correlation between their theoretical potential and optimal potential in critical state is compared.Finally,the life cycle cost method（LCC）is used to simulate the cost of BCHP and aa-caes power plants,which is connected with the factor estimation method,and the cost of them is corrected.O n the p remise of comprehensively considering the cost of the whole life cycle,this paper simulates the benefits of BCHP and aa-caes power plants under the optimal scheduling mode,selects a more optimized capacity configuration,simulates the comprehensive benefits of BCHP and aa-caes power plants,analyzes the benefits of BCHP and aa-caes power plants with examples,and obtains the cost recovery rate under the best scheme,The output rate of the whole service life is predicted.