Market Equilibrium Analysis Of Multi-energy System Containing Power To Gas Microgrid

With the increase of energy demand and the diversification of load types,as well as the increase in the proportion of clean energy consumption and the decrease of traditional fossil energy consumption,the coupling relationship between multiple energy sources also makes the scheduling pressure of multi energy system increase continuously,and the phenomenon of wind and light abandonment is becoming more and more serious.The emergence and application of power to gas(p2g)technology can promote the conversion of different energy sources,which can convert the electric energy of the transmission line into natural gas for storage,and enhance the flexibility of the integrated energy system.At the same time,China’s energy policy is more and more market-oriented.There is a competitive relationship between the comprehensive energy systems in the multi energy system.Each comprehensive energy system usually aims at maximizing its own interests when making decisions.It is easy to ignore the demand of multi-source system for reducing the total production cost,and it is difficult to accurately describe the comprehensive energy system in the market Behavior in the field.Therefore,on the basis of full consideration of the interests of all parties,it is particularly important to construct a scheduling model that takes into account the multi energy network and various integrated energy systems,and study the equilibrium problem of multi energy systems in the market situation.Firstly,the research status of integrated energy system and electricity to gas technology is described.On the basis of the analysis of the typical energy structure of the grid,a detailed analysis is made on the characteristics of the grid.Secondly,the optimal economic dispatch model of microgrid with electricity to gas is constructed.Through the comparative analysis of two different scenarios,it shows that p2g technology combined with gas storage device can significantly improve the renewable energy consumption capacity of the integrated energy system,and can improve the economy and flexibility of its operation under the guidance of priceThirdly,the market behavior of each integrated energy system in the multi energy market competition is deeply explored,and the master-slave game model with multi energy network as the dominant and each integrated energy system as the follower is determined.In this paper,the existence of Stackelberg Nash equilibrium is demonstrated by taking the model of four integrated energy systems connected by power grid and gas grid as the research object,and a new solution of "equilibrium definition+genetic algorithm" is proposedFinally,an example is simulated to simulate the operation of different integrated energy systems in the multi energy system.When the market equilibrium solution is reached,the market equilibrium state of each integrated energy system is analyzed.The results show that under the market-oriented operation conditions,each integrated energy system can independently adjust its own output and purchase strategy according to the guidance of price information and strive for the maximum benefit,so as to improve the overall energy efficiency and have a positive impact on wind power consumption.