考虑水电制氢的水-氢综合能源系统容量规划

Capacity Planning for Water-Hydrogen Integrated Energy Systems Considering Hydro-electricity Hydrogen Production

摘要:

为促进“双碳”目标的实现，将水电系统与氢能相结合可提高水电资源利用率、降低制氢成本，并提升能源系统的清洁程度，助力中国实现能源转型。为此，构建了一个考虑水电制氢的水-氢综合能源系统双层规划模型。在上层中，目标是最大程度降低系统成本，提高系统制氢、储氢能力以及燃料电池性能。而在下层中，目标是最大限度减少日常运行中的负荷损失，以提高综合能源系统中所有设施的利用率。通过综合考虑这两个层面的目标，优化系统的设计和运行策略。最后，以某水电站实际运行数据为基础进行了算例分析。结果显示，氢能设施建立后降低系统成本19.08%，减少弃水流量53.12%，提升了水电站的利用效率，从而验证了所建模型的合理性与有效性。

Abstract:

In order to realize the low-carbon energy transition in China and promote the realization of the dual-carbon goal, it is important to combine hydropower system with hydrogen energy. This system can improve the utilization rate of hydropower resources, reduce the cost of hydrogen production, and enhance the cleanliness of energy system to help China realize the energy transition. To this end, a two-layer planning model for an integrated water-hydrogen energy system considering hydro-electricity hydrogen production is constructed. In the upper layer, the goal is to minimize the system cost and improve the system hydrogen production and storage capacity as well as fuel cell performance, while in the lower level, the goal is to minimize load losses in daily operations to improve the utilization of all facilities in the integrated energy system. By considering the objectives at both levels together, the design and operation strategy of the system is optimized. Finally, an arithmetic analysis is carried out based on the actual operational data of a hydropower plant in a region of China. The results show that the establishment of hydrogen facilities reduces the system cost by 19.08% and the abandoned water flow by 53.12%, which improves the utilization efficiency of the hydropower plant, thus verifying the rationality and validity of the proposed model.