Optimal Scheduling of Integrated Energy System Considering Distributed Photovoltaic Power Fluctuation

Abstract

With the continuous development of society, energy consumption and environmental pollution are becoming more and more serious, which brings great challenges to how to establish a reasonable and effective way of energy utilization. In recent years, the emergence of integrated energy system has brought a new solution to improve energy utilization, realize the coordination and complementarity of multiple energy sources, and absorb distributed photovoltaic. However, on the one hand, the power fluctuation caused by a large number of distributed photovoltaic access will affect the optimal scheduling of the integrated energy system, and how to suppress the fluctuation of distributed photovoltaic becomes a problem to be considered; on the other hand, the environmental problems can not be ignored. Aiming at the gas electricity regional integrated energy system with renewable energy, this paper establishes the coordinated optimization operation model of gas electricity regional integrated energy system, takes the total cost of the system as the objective function, and considers the power fluctuation cost and environmental cost in the objective function, combined with constraints, uses CPLEX solver to solve the problem. With the help of calculation examples, the economy and power fluctuation of the integrated energy system are compared and analyzed under different power fluctuation coefficients, and the optimal output of each unit is solved, so as to achieve the purpose of stabilizing the distributed photovoltaic fluctuation under the condition of meeting the economic requirements.