Research On Optimization Strategy Of Multi-microgrid Power Sharing Operation Based On Cooperative Gam

Under the "dual carbon" vision,the proportion of new energy power generation is gradually increasing,and building a new type of power system with renewable energy as the main body has become an important measure in the reform of the power system.Developing a new type of power system is an important way to promote the construction of green energy and achieve the "dual carbon" goal.Microgrid,as the main mode for the development of new power systems,is pushing the power system into a new journey,and profound changes are taking place in the grid structure and functional morphology.In the context of the new power system,power users exist as producers and consumers,and they can negotiate and trade independently.This has also changed the mode of power trading between microgrids,and the construction of a microgrid power trading mechanism under the new power system has also become a new research hotspot.Based on this background,this article aims at the idea of power sharing under the cooperative operation mode of multiple micro grids in the new power system,and conducts research on the power sharing transaction mechanism including comprehensive regulation of multiple flexible resources,considering shared energy storage and user fraud.The main research contents are as follows:(1)Firstly,the application of game theory in power trading and the optimal operation of producers and consumers based on multi micro grid power cooperation are reviewed.The types and basic characteristics of producers and consumers are analyzed and summarized,as well as the key supporting technologies required for the optimal operation of producers and consumers,as well as several key issues that exist.A micro grid system model and operation cost model with multiple flexible power supply resources and conventional loads were constructed,taking into account the orderly/disorderly charging and discharging strategies of electric vehicles and load side demand response,providing a basic theoretical model for subsequent research on trading mechanisms.(2)Based on the micro grid system model and the operation cost model,a social cost minimization model for the operation of multi micro grid alliances is established,and a revenue allocation model based on asymmetric bargaining is constructed based on the different contribution values of each community micro grid during the cooperative and shared operation of electric energy.An improved adaptive ADMM algorithm is designed to solve the problem,verifying the effectiveness of the model and algorithm,and accelerating the computational convergence speed.Achieve a fair distribution of benefits among participants in the micro grid alliance while reducing its operating costs.(3)Due to the high cost of energy storage configuration,it is difficult to achieve the configuration of energy storage for each microgrid in the planning and construction of community microgrids.Based on the previous research,a study was conducted on the optimal operation of power sharing considering the participation of shared energy storage,and taking into account the dishonest behavior of power users in the transaction process,a revenue allocation maximization power sharing transaction model based on the balance between shared energy storage and user fraud was constructed.The ADMM algorithm was used to solve the model,and a numerical example was designed to analyze and verify the effectiveness of the model,achieve maximum revenue distribution between microgrid participants and energy storage entities in a fraudulent equilibrium state,and promote fairness in electricity trading.