Research On Synergetic Optimization Of Integrated Energy System Considering Multi-regional Interconnection

Compared with the traditional distributed energy subsystem,the integrated energy system puts more emphasis on the coordination relationship between various energy sources,and a better operating state can be achieved through the mutual complementation of various energy sources.At present,most of the research on integrated energy system is aimed at the optimization of a single independent system,and the current research on the optimal configuration of integrated energy system with multiple regions is mainly concentrated on combined power、heat and gas networks.The mutual coupling makes the optimization operation of multi-region integrated energy system increasingly complicated,so the current research is still in the preliminary stage.The integrated energy system is an effective way to solve the rational allocation of energy,which mixed energy supply of electric energy,heat energy and gas energy.Energy efficiency can be improved by optimizing the configuration of network power flow,and the redundancy of the network is reduced as much as possible through high coupling.The multi-region interconnected integrated energy system is established as the optimization goal of this paper.Firstly,a integrated energy system model of single-region electric energy,heat energy,and gas energy mixed energy supply is established,which lays an important foundation for the optimal operation of a multi-region interconnected integrated energy system.On this basis,the objective function with user sales revenue as the maximum is established.The price of power,heat,and gas can be assumed to be used as an economic means to adjust the use of energy.Secondly,the consistency theory is applied to the integrated energy system,and the improved discrete consistency algorithm is used to optimize the objective function established in the paper.In the consistency calculation,through the selection of various energy clearing prices and the reasonable coordination between the various units,the consistency variable is calculated according to the rate of equal increase in consumption.And through multiple iterative calculations,the increment of electric energy gain,heat energy gain,and gas energy gain in each region tend to be consistent,and then the multi-region interconnected integrated energy system of mixed energy supply of electric energy,heat energy,and gas energy is optimized collaboratively.The proposed method is verified by a calculation example.The analysis of the calculation example shows that through the improved discrete consensus algorithm,the convergence time is effectively reduced and the calculation speed is improved.The purpose of coordinated optimization of multi-region interconnected integrated energy systems is achieved through the choice of energy clearing prices and reasonable coordination between the units.With the emergence of multi-operator interaction mode in the energy market,the energy industry has gradually formed a comprehensive energy system involving multiple operators.Finally,a multi-region interconnected integrated energy system master-slave game optimization analysis method was proposed.In a multi-region interconnected integrated energy system,a multi-operator coordination interaction model was studied,and a corresponding multi-operator master-slave game model was established.The proposed method is verified through a calculation example.The case analysis shows that by adjusting the energy consumption plan of the user through the price signal,the energy sales revenue of the integrated energy system user is increased,and the effectiveness of the multi-region interconnected integrated energy system master-slave game analysis method is verification.