With the progress of the energy transition, the volatility of renewable energy sources requires storage systems to ensure a stable power supply. Reversible solid oxide cells (RSOCs), known for their high efficiency in both fuel cell and electrolysis modes, offer a promising solution. Nevertheless, their potential in integrated energy systems remains underexplored. This study develops a novel optimization framework for a wind-solar hybrid hydrogen production and energy storage system (HHES) based on the RSOCs. A co-optimization framework combining particle swarm optimization and mixed-integer linear programming is formulated to simultaneously determine the capacity configuration and operational strategy, effectively addressing the uncertainty of renewable generation. The optimization results demonstrate that the HHES with RSOCs achieves an 84.68% reduction in curtailed electricity compared to the HHES without RSOCs. Moreover, renewable energy utilization has increased by 11.8%. This study underscores the importance of managing integrated energy conversion units and provides a decision-support tool for designing cost-efficient and high-performance renewable hydrogen systems.
QIAN et al. (Fri,) studied this question.