Comprehensive Energy Market Trading Mechanism Considering Energy Cascade Utilization

Electric thermal integrated energy microgrid is an effective way to realize the comprehensive utilization of clean energy,cascade consumption and improve energy efficiency.If market-oriented interactive competition can be introduced into many main sources of multi microgrid,it can stimulate market vitality and promote the healthy development of integrated energy microgrid.Under the background of power marketoriented reform and the vigorous development of integrated energy system,this paper studies the energy cascade utilization strategy of regional integrated energy market,the behavior strategy analysis of the main body of the integrated energy market,and the changes brought about by the participation of operational integrated energy users in the market,which is of great significance to ensure the economic operation of the future integrated energy system,high efficiency and environmental protection,and realize the coupling and complementation of multiple energy sources The main research contents are as follows:Firstly,based on the demand of thermal transaction in the future,a time-sharing optimal market transaction mechanism of multi microgrid considering thermal energy classification based on master-slave game is studied.Based on the different demand of thermal energy quality in different periods of time for civil and industrial microgrids,a time-sharing supply strategy with balanced thermal energy and hierarchical thermal energy is proposed.Secondly,the market transaction mechanism of multi microgrid heat allocation considering the demand of heat energy classification and time-sharing optimization is further studied,and the master-slave game is introduced to solve the interest conflict between participants in the process of collaborative optimization.Finally,on the basis of proving the existence and uniqueness of Stackelberg Equilibrium,the efficient set method and the steepest descent method of convex optimization algorithm are used to solve the model.The results show that the proposed strategy can improve the utility of both the supply side and the use side,and improve the energy utilization rate,which is in line with the market-oriented trading expectations.Finally,with the increasing openness of the integrated energy market,more and more business-oriented integrated energy users participate in the market,and the electrothermal transaction between multiple entities is no longer one-way.Each subject has a variety of role relationships.In the process of different trading,there is a two-way communication between energy and information.Aiming at this flexible market relationship in the future,based on the model of the first two chapters,this paper proposes to decouple the electrothermal energy trading process through the multi-agent system,and uses two iterations of Nash-Stackelberg game to solve the optimal strategy of market trading.Finally,an example is given to verify the advantages brought by the participation of operating comprehensive energy users in the market,so as to improve the economy of all parties and the utilization rate of renewable energy To reduce environmental pollution.