关键词: 综合能源系统, 风力发电, 光伏发电, 燃料电池, 运行模式

Abstract: To address the issues of environmental pollution and resource scarcity. This paper designs an integrated energy system that combines wind energy, solar energy and fuel cells. The mathematical model of the integrated energy system combining wind, solar and gas was built by using MATLAB software, and the comprehensive performance evaluation indicators were proposed based on the thermal performance, economic performance and environmental protection performance of the system. Based on the external meteorological environment and load demand, the typical daily operation performance of a certain industrial park in Gansu Province during the peak season, transition season and off-season was studied, and the optimal operation strategy for different typical days was obtained according to the comprehensive performance evaluation indicators. The results show that the system should adopt the electric following operation mode during the peak season and the transition season, the hot following operation is selected from 10 to 6 p.m. in the off-season, and the electric following operation is selected in other periods. Meanwhile, this paper also discusses the influence of the electric refrigeration load distribution coefficient (β) on the system energy consumption in the heat-following operation mode and the electric-following operation mode. In the electric-following operation mode, as β increases, the energy consumption decreases accordingly, which is relatively gentle. In the heat-following operation mode, as β increases, the overall trend of energy consumption also increases accordingly.

Key words: Integrated energy system, Wind power generation, Photovoltaic power generation, Fuel cell, Operation mode