Research On Multi-level Game Economy Cooperative Operation Of Grid-connected Microgrid Including Electric Vehicles

The theory and technology of microgrid provide support for the efficient penetration application of new energy power generation.The grid-connected microgrid can efficiently integrate solar and energy storage batteries and other units into the energy interaction of the distribution network,and its control strategy has a significant impact on the optimal configuration and stable operation of the microgrid.In the future,after a large number of electric vehicles are connected to the power grid,they will not only serve as loads,but also act as energy storage units,which will have a certain impact on the operation of the micro-grid.In this paper,the economic configuration and stable operation of grid-connected microgrid including electric vehicles are studied,focusing on the mixed game optimization algorithm to solve the economic configuration problems of microgrid and the control strategy of microgrid.According to the energy storage properties of electric vehicles and the properties of wind power,photovoltaic and battery units,the corresponding mathematical models are established.Based on the research on electric energy consumption of electric vehicles,the electric energy consumption strategy of group economic planning for electric vehicles is proposed,taking the constant power of the system connection line as the benchmark and considering the economic operation characteristics of electric vehicles connected to the microgrid.The simulation analysis of the designed strategy shows that this strategy can achieve reasonable and efficient electric energy consumption of electric vehicle group,and also achieve the optimization goal of reliable and economic operation of grid-connected microgrid.It has the ability of "peak clipping and valley filling" in the peak electricity consumption period of the grid.For electric automobile large-scale access grid type micro power grid characteristics,design of multi-layer multistage micro power grid interconnection system control strategy,the electric car,micro power grid and the main distribution network(L-ADN)as the interests of the different position,with power grid level micro grid and distribution network of economic operation,operation stability and private electric power load level of the optimum benefits of pay,The economic operation scheduling mode method of tripartite non-cooperative game theme is proposed.A hybrid game optimization algorithm combining the mapping of particle swarm optimization and non-cooperative game algorithm is used to solve the above targets optimally.Taking a certain area in the northwest as an example,the mixed game optimization algorithm and control strategy were verified by MATLAB.A simulation experimental platform was built for simulation analysis.The simulation and configuration results show that,in the case of orderly charge-discharge electric vehicles connected to the microgrid,the control strategy studied can enhance the capacity of peak clipping and valley filling of the microgrid itself,and control the investment and configuration cost of the microgrid system unit at the same time.It also has certain advantages in operation economy and power supply reliability of microgrid.The research of this paper provides some reference basis for the future power market and the cooperative allocation of individual power load and the stability control of power grid.