Li Luoyi, Sun Yi, Han Ying, Chen Weirong
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China.
iScience. 2024 Aug 8;27(9):110691. doi: 10.1016/j.isci.2024.110691. eCollection 2024 Sep 20.
The evident seasonal variations in photovoltaic output as well as electric and thermal loads will result in significant energy wastage and carbon emissions. In order to address the problem, a two-stage sizing cooptimization method considering economy-safety characteristics is proposed for the integrated energy system combined power-hydrogen-heat cogeneration (CPHH-IES), with seasonal hydrogen storage. Subsequently, an economic-durability-safety optimized objective is introduced, assessing the total cost throughout the sizing cycle, equipment degradation during operation, and safety indicators of the hydrogen energy system. Finally, a two-stage sizing framework based on heat-determined hydrogen is established, and a combined configuration-scheduling double-layer strategy is put forward within the framework to accommodate seasonal hydrogen storage and multi-energy coupling. The feasibility of the method was validated using data from a site in northwest China, demonstrating its capacity to ensure the safety of the hydrogen energy system and enable seasonal hydrogen storage.
光伏发电输出以及电力和热负荷明显的季节性变化将导致大量的能源浪费和碳排放。为了解决该问题，针对结合了电力 - 氢气 - 热力联产（CPHH - IES）并具备季节性储氢功能的综合能源系统，提出了一种考虑经济 - 安全特性的两阶段规模协同优化方法。随后，引入了经济 - 耐久性 - 安全性优化目标，评估整个规模确定周期内的总成本、运行期间设备的退化以及氢能系统的安全指标。最后，建立了基于热定氢的两阶段规模确定框架，并在该框架内提出了一种组合配置 - 调度双层策略，以适应季节性储氢和多能源耦合。利用中国西北部某地点的数据验证了该方法的可行性，证明了其确保氢能系统安全并实现季节性储氢的能力。
