Study On Supply-demand Collaborative Optimization Of Multi-regional Integrated Energy System Considering Generalized Energy Storage

The regional integrated energy system is a key area and critical link to achieve the carbon peak and carbon neutrality targets under the current energy transition and lowcarbon development background.Through energy complementarity between regions,carbon emissions can be further reduced,and economic efficiency can be improved.In order to achieve supply and demand balance in the regional integrated energy system,energy storage devices have become an important regulation means.However,actual energy storage devices have disadvantages such as high operation and maintenance costs,and high carbon emissions during production and decommissioning.Therefore,the concept of generalized energy storage is introduced in the regional integrated energy system.In addition,existing research on optimized operation of regional integrated energy systems has not yet considered the impact of generalized energy storage on carbon accounting and carbon trading.Therefore,this thesis studies the low-carbon optimization operation strategy of multi-regional integrated energy systems considering generalized energy storage.This article first introduces the research background and significance,including the research status of generalized energy storage,low-carbon optimization,and multi-regional integrated energy systems within the context of integrated energy systems.The shortcomings of various related research are analyzed,and the main work of this article is briefly elaborated.Next,based on the three types of energy sources(electricity,heat,and gas),the basic structure of the regional integrated energy system is established,and the renewable energy generation equipment,energy coupling equipment,and generalized energy storage equipment are modeled.Then,the Life Cycle Assessment(LCA)method is used to quantitatively calculate the carbon emissions throughout the equipment and energy cycles of the regional integrated energy system,and the carbon emissions cost is included in the total system cost.An optimization model considering generalized energy storage and LCA carbon emissions is established for the low-carbon operation of the regional integrated energy system.The model analyzes the impact of equipment output considering LCA carbon emissions and the introduction of generalized energy storage/LCA carbon emissions on system costs.The research scope is then extended to multi-regional integrated energy systems,and the carbon emissions quota of each regional integrated energy system is calculated.The cost of a reward-penalty tiered carbon trading mechanism is also included in the analysis,and an optimization model for the operation of multi-regional integrated energy systems considering tiered carbon trading is established.The model is solved using an improved particle swarm algorithm,and the effectiveness of the proposed multi-regional integrated energy system optimization operation strategy is verified through case analysis.Finally,the results indicate that the low-carbon optimization operation strategy of multi-regional integrated energy systems considering generalized energy storage proposed in this article can reasonably allocate the output of each regional integrated energy system,improve the energy utilization efficiency of the system,reduce the carbon emissions and total cost of the system,and effectively promote the low-carbon and green development of regional integrated energy systems.