Cooperative Optimization Operation Method Of Multiple Energy Stations In Integrated Energy System

In order to cope with global energy and environmental issues,to meet the diversified needs of the load on the user side and the efficient use of energy,an integrated energy system came into being.The integrated energy system couples various heterogeneous energy sources of cold,heat,electricity,and gas.It can fully utilize the advantages of synergistic optimization and multi-energy complementarity among heterogeneous energy sources through the cascade utilization of different grades of energy,which is of great significance for upgrading the energy industry structure,improving energy production and utilization methods,promoting the consumption of renewable energy,and improving energy utilization.The traditional single-type energy system operates independently,so that the multi-energy complementary characteristics and multi-system cooperative operation characteristics between heterogeneous energy sources have not been exploited to the maximum extent.This article focuses on the optimization of multi-energy stations composed of multiple integrated energy systems in the region.The article introduces the background and significance of the topic,and expounds the research status of integrated energy systems and energy storage systems at home and abroad.Firstly,according to the operation mechanism and energy supply characteristics of the energy station of the integrated energy system,construct a typical energy supply structure diagram of the integrated energy station,and establish their o wn output models according to the difference in the operation characteristics of the energy conversion equipment in the energy station and the equipment in the energy storage station.Secondly,the energy storage station is introduced into the optimal disp atch of the multiple energy stations system,and the relationships of energy flow and energy conversion between the energy station and the energy storage station are explored,regarding the energy storage station and the multi-energy station as two different stakeholders,Regarding the energy storage station and the multiple energy stations as two different stakeholders,considering the economic optimization of each party,constructing their own objective functions,according to the balance between the various heterogeneous energy flows between the multiple energy stations,the capacity limitation of the energy conversion equipment and the energy transmission limitation of the external energy network,it is transformed into cor responding constraints,and an optimal scheduling model for multiple energy stations is established.Taking into account the overlapping characteristics of the decision variables of various stakeholders,a negotiation game model is proposed to coordinate the power interaction values between multiple energy stations and energy storage stations,and a maximum utility function is established to solve the multi-objective optimization problem proposed in this paper.Finally,based on the actual case of a demonstration project,a framework for a comprehensive energy system multiple energy stations calculation case was built,and internal renewable energy output and various heterogeneous energy loads were predicted.Constructing three operation modes of multiple energy stations operation alone,interconnection operation and energy storage station operation,and analysis of the scheduling strategy and operation economy of each operation mode.The results show that the method proposed in this paper can effectively coordinate the interests of both parties,realize the optimal economics of the multiple energy stations system while taking into account the interests of the energy storage station,and does not cause abandonment of wind and light,and realizes the complete consumption of renewable energy.