Energy Scheduling for Integrated Electricity-Hydrogen Systems Considering Hybrid Water Electrolysis and Biomass Electrolysis

This paper focuses on the energy scheduling for integrated electricity-hydrogen systems (IEHS) with hybrid water electrolysis and biomass electrolysis. First, dynamic operating models for alkaline water electrolysis and proton exchange membrane biomass electrolysisis are presented to capture dynamic operating efficiency and temperature variations to improve the hydrogen production flexibility. Then, the quasi-steady-state operation model for IEHS is proposed. A tractable reformulation with various convex relaxation techniques is developed to address the resulting nonconvex and nonlinear terms arising from dynamic electrolysis models and quasi-steady-state hydrogen flow models to improve the solution efficiency. Numerical results illustrate the effectiveness of the proposed model.