Capacity Optimization of Hybrid Energy Storage System in Microgrid

A hydrogen fuel station is an infrastructure for commercializing hydrogen energy using fuel cells, especially in the automotive field. Hydrogen, produced through microgrid systems of renewable energy sources such as solar and wind, is a green fuel that can greatly reduce the use of fossil fuels in the transportation sector. In this study, taking the Winter Olympics as the background, hydrogen production was carried out through the wind-solar hybrid microgrid system installed in Chongli, Zhangjiakou, so as to meet the fuel supply of hydrogen buses during the Winter Olympics. This analysis is the capacity optimization configuration design of the microgrid including the hydrogen production system, and the simulation analysis is carried out by using the Homer simulation software. In this study, NASA's ground-based meteorology and solar databases were used. Therefore, the annual average wind speed of the site is 5.72 m/s, and the annual average solar radiation is 5.08 kWh/m(2)/d. According to the optimization results obtained for the proposed configuration, different system configuration schemes are found, and a variety of schemes are compared to select the most economical capacity configuration scheme. It was finally shown that a microgrid including a hydrogen production system powered by renewable energy is economically feasible.