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Portfolio of Wind-Photovoltaic-Loads Toward Green Hydrogen Development

As a clean secondary energy carrier, hydrogen has great application potential in the decarbonization of the power grid, helping to solve the problem of renewable energy consumption in the power system. To further promote hydrogen energy development and renewable energy consumption, this paper proposes a wind photovoltaic load coupled hydrogen production system (WPLHS) and conducts Provincial-Level differentiated technical and economic analysis on it. First, we discuss the significance of developing WPLHS, and then give the structural framework and optimization model of WPLHS. Finally, based on the annual maximum daily power load data of 5 representative provinces and the wind and solar power generation data of 40 municipalities, we conduct a technical and economic analysis as well as sensitivity analysis of the provincial levelized cost and system cost of power to hydrogen (P2H) under various wind and solar combinations. The results show that the levelized cost of hydrogen LCOH2 and the system cost composition are significantly different for various wind and solar combinations. The fluctuation of power load also has a significant impact on LCOH2. In addition, the conversion efficiency of P2H is the most critical factor affecting LCOH2, while the investment cost of ES and the investment cost of P2H have the most negligible impact on LCOH2.