Research On Energy Management Strategy Of Microgrid Based On Cooperative Game

With the rapid development of smart grid era,the traditional single investment patterns have been unable to meet the diversified development trend micro web,and electronic installations,including hot and cold(Combined Cooling,Heating and Power,CCHP)system integrated micro grid,not only can greatly improve the utilization rate of energy and can provide important for national economy and science and technology development application value.Therefore,this paper will combine the key technologies of micro-grid,and comprehensively consider the four aspects of economy,environmental protection,safety and satisfaction,and conduct an in-depth study on the energy management scheme of micro-grid involving multi-subject micro-source investors.The main research work is as follows:In view of the comprehensive energy microgrid with CCHP system,this paper proposes the economic sharing scheme of three energy sources based on cooperative game: electricity,heat and cold.First,a concrete model is established for the internal units of the micro grid,including photovoltaic power generation,CCHP system,power storage system,heat storage system,cold storage system and user load model.Then,based on the unit model,a cooperative game model with the maximum comprehensive benefit of the alliance as the objective function is established.The artificial swarm algorithm is used to solve the above hybrid energy sharing problem,which not only improves the convergence of the results,but also avoids the disadvantages of local optimum to a large extent.In order to fully mobilize the enthusiasm of investors and ensure the fairness of benefit distribution.In this paper,according to the contribution of each subject to the alliance,Shapley value method is used to carry out a reasonable distribution of additional benefits.Finally,an example is given to verify the economic efficiency and rationality of the energy management scheme studied in this paper,which provides a reference for different types of investors.Based on the above research results,(1)the complementarity between clean energy and traditional energy,the peak-load effect of energy storage technology,the initiative of user demand side response,and the advantages of power interaction with external network are all well reflected in the case analysis.(2)the intraday energymanagement plan based on the comprehensive consideration of micro-source output limitation,CCHP power generation cost,operation and maintenance cost of each unit,power purchase cost and electricity price can not only significantly improve the efficiency of investors,but also help to realize high-quality and orderly supply of mixed energy and avoid resource waste.(3)micro-source capacity configuration and seasonal factors can also affect the main benefits to a certain extent.