Optimal Scheduling Of Electricity-Heat-Hydrogen Integrated Energy System Based On Game Theory

Due to the impact of resource endowments,the flexibility of China’s power system is insufficient.As the proportion of renewable energy power continues to grow,the stability of system operation faces serious challenges.Hydrogen energy storage can transfer and store the power of system,and is a cutting-edge technology to solve the flexibility problem.Adding hydrogen energy storage to integrated energy system and conducting joint planning for multiple energy sources such as electricity,heat,and hydrogen can leverage the complementary advantages of different energy sources.Under market-oriented conditions,there may be multiple investment entities in an electricity-heat-hydrogen integrated energy system,and there may be interest associations or conflicts between each entity.Therefore,it is important to analyze multiple interest relationships in game equilibrium.Therefore,based on game theory,this paper studies the optimal scheduling problem of the electricity-heat-hydrogen integrated energy system.The main research contents include:1)Based on game theory,a model of the electricity-heat-hydrogen integrated energy system is established.The mathematical model of zero-sum game and evolutionary game is constructed,and the structure of electricity-heat-hydrogen integrated energy system including electricity energy flow,heat energy flow and hydrogen energy flow is proposed,and energy producers,hydrogen energy storage and load aggregators are modeled and their energy supply or energy consumption characteristics are analyzed.2)Based on evolutionary game theory,the comprehensive demand response behavior of user groups is analyzed.On the user side,considering reducible load,translatable load,and heat-electricity alternative load,this paper establish an evolutionary game logit dynamic equation for the user’s comprehensive demand response,adopt a distributed iterative algorithm to solve the evolutionary equilibrium strategy of the dynamic equation,determine the user’s energy use plan,and verify it through numerical simulation.3)Based on zero-sum game theory,the scheduling strategy of an electricity-heathydrogen integrated energy system is optimized.On the power generation side,based on moment information such as expectation,variance,and covariance,the ellipsoidal uncertainty set of wind turbine and photovoltaic unit output is determined,and the distributionally robust conditional value at risk method is used to calculate the uncertainty risk of the system.A zero-sum game model for optimal scheduling of the system is constructed,and the model is transformed into a semi definite programming problem by using the Lagrange duality principle to solve it.The output plan of the generator unit is determined.Finally,the effectiveness of the proposed method is verified by a numerical example simulation.