Research On Microgrid Scheduling Considering Energy Prosumers From The Perspective Of Game Theory

Microgrid is a small energy system consisting of distributed power supply,energy storage equipment and control platform.The application of advanced communication technology,interaction with users,efficient integration of resources on both sides of supply and demand,improvement of energy utilization rate and reduction of operating cost of power system have broad development prospects and extremely high application value in the future new power system.With the gradual expansion of the application scope of distributed energy and energy internet,microgrid system considering energy prosumers is bound to become an important form of the new power system in the future.On the basis of considering three types of energy prosumers equipped with wind power generation,photovoltaic power generation and energy storage equipment respectively,this thesis studies the energy scheduling of the microgrid from the perspective of game theory.Aiming at the randomness and intermittence of distributed renewable energy generation and the uncertainty of user demand,this thesis studies the high-dimensional,multivariable and multi-constraint energy optimal scheduling problem in energy management by using a Stackelberg game model and scenario simulation method.Firstly,on the basis of summarizing the relevant literature achievements in the field of microgrid game scheduling considering energy prosumers,the operation mechanism of microgrid game scheduling under the masterslave game model is analyzed from the aspects of microgrid game architecture design,management objectives and input-output of each subject.Secondly,based on the operation mechanism,the Stackelberg game model of "one master and many followers" in a noncooperative game is established to effectively describe the dynamic process of energy interaction between supply and demand.In this process,the microgrid energy dispatching center aims at maximizing its own income,and formulates internal electricity prices to guide energy prosumers to respond to demand.The flexible demands of energy prosumers flexibly determine their own electricity demand strategy according to factors such as electricity price information and electricity consumption satisfaction,so as to realize peak shaving and valley filling while pursuing the maximization of their own income.Thirdly,the existence and uniqueness of the equilibrium solution of the game model are proved by using optimization related theory,and the intelligent algorithm and related optimization solver are used to solve it.At the same time,an example proves the effectiveness of the model.Finally,the game scenario is simulated by a system dynamics method,and the demand adjustment and price adjustment are compared and analyzed.Aiming at the power interaction between energy prosumers and microgrid energy dispatching center,this thesis puts forward the master-slave game energy management strategy of price incentive and demand response,which is helpful to ensure the optimal energy dispatching management of the interaction between microgrid and demand side in theory,provides theoretical support for the formulation of energy dispatching management strategy of energy prosumers in microgrid,and helps to consider the coordinated operation and management of source-network-load energy in practice,and improves the efficiency and stability of energy management in power system.