Micro-Grid Integrated Resources Planning Based On Game Theory With Supply-demand Interaction

With China’s economy growing into a new stage, the growth of electricity demand is stable. Meanwhile, faced with the dual pressure of global warming and domestic environmental pollution, a variety of power technology are in large demand, such as Distributed Generation, Smart Grid, Electric Vehicles and Demand Side Management which makes Chinese electric power reform enter a critical period.Nowadays, generation investors have fully independent economic entity, so conventional centralized planning cannot meet today’s power grid requirements. Moreover, demand side resources in power planning have not been reasonably considered. As a result, the new plan should adapt to competition in the electricity market, as well as include the demand side resources, especially the plan for micro-grid which involves distributed energy resource and interactive load.In this paper, an optimal planning of integrated resources in micro-grid based on game theory is proposed, considering the competition of investors and demand side.Capacity configuration model of wind, photovoltaic, micro-turbine and energy storage is proposed in this paper based on the game theory to obtain the capacity of destributed generations by maximizing the net earnings considering economy, stability and environmental protection of different investors in the imperfect competition mode. The algorithm of independent decision-making optimization is applied with "eliminating the dominated strategy". And the results analysis with respected to influencing factors provides insight for the determination of operation mode, subsidy policy and alliance strategy.A new supply-demand interaction model fully considering switching of interactive target in different micro-grid operation modes and screening of dispatch is proposed in this paper. Based on the aforementioned model, demand side has been taken into consideration by employing "Order decoupling method" and "Game participation act method". Order decoupling method considers the effect of the different targets on the configuration of interaction, furthermore concluding different operation modes to adapt to micro-grid renewable energy and effectively improve the utilization of interactive mode, which also applied into "Game participation act method". As a part of game subject, demand side is in competition with distributed power sources, fully reflecting the value of unity of producing and sale. The simulation results of the "game player method" verify its function of improving the profit of each player to ensure the enthusiasm of all players involved in the market competition.