摘要
近年来,随着可再生能源电解水技术的快速发展,电解槽的耐久性问题备受关注。为应对可再生能源电解制氢中电解槽因波动运行导致的寿命衰减问题,该文提出一种计及电解槽寿命的风光氢一体化系统双层运行优化方法。首先,综合考虑电解槽空闲、生产、热备、故障等状态,构建电解槽多状态运行表征模型。然后,提出风光氢一体化系统双层调度框架,在外层基于风光出力预测与规则性多槽功率分配策略,优化日前电解槽启停方案,在内层针对单一电解槽,构建多维度寿命函数,进行运行调度优化。最后,引入电解槽轮值策略,基于整体电解槽平均寿命,实现多堆电解槽寿命衰减均衡化。3种制氢场景调控结果表明,系统可根据条件变化合理切换电解槽状态,实现系统能量平衡;在满足各项约束条件下,可再生能源利用率提高;电解效率提升1%~5%,电解槽使用寿命延长15%~35%,并使多槽系统寿命衰减更均衡。此研究为提升新能源消纳能力与氢能高效利用提供有效技术路径,对相关示范工程具有指导价值。
In recent years,with the rapid development of renewable energy electrolysis technology,the durability of electrolyzers has attracted much attention.To address the issue of lifespan degradation caused by fluctuating operation of electrolysis cells in renewable energy hydrogen production,a dual-layer operation optimization method for a wind-solar-hydrogen integrated system that takes into account the lifespan of the electrolyzers is proposed.Firstly,A multi-state operation characterization model for the electrolytic cell is constructed with consideration of the idle,production,hot standby,and fault states of the electrolyzer.Then,a dual-layer scheduling framework for the integrated wind-solar-hydrogen system is proposed.Based on the wind-solar output forecasting and regular multi-tank power allocation strategy in the outer layer,the daily start-stop scheme of the electrolyzer is optimized.In the inner layer,a multi-dimensional lifetime function is constructed for a single electrolyzer to optimize operation scheduling.Finally,a rotating strategy for the electrolyzer is introduced,based on the average lifespan of the entire electrolyzer,to achieve balanced the lifespan degradation of the electrolyzer with multiple stacks.The results of three hydrogen production control scenarios indicate that the system can switch the electrolyzer state reasonably according to changes in conditions,achieving energy balance in the system.The utilization rate of renewable energy is improved within various constraints.The electrolyzer efficiency has been improved by 1%~5%,and the service life of the electrolyzer has been extended by 15%~35%,making the life decay of the multi stack electrolyzer system more balanced.This study provides an effective technical path for enhancing the capacity of new energy consumption and efficient utilization of hydrogen energy,and has guiding value for related demonstration projects.
作者
梁丹曦
杨梦缘
宗正
宋洁
俎焱敏
柯绍杰
张永生
LIANG Danxi;YANG Mengyuan;ZONG Zheng;SONG Jie;ZU Yanmin;KE Shaojie;ZHANG Yongsheng(School of Energy Power and Mechanical Engineering,North China Electric Power University,Changping District,Beijing 102206,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China)
出处
《中国电机工程学报》
北大核心
2025年第16期6176-6189,I0002,共15页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家科技重大专项(2024ZD0801900)
国家电网有限公司科技项目(52060024003T)。
关键词
风光氢系统
电解制氢
生产计划
功率分配策略
寿命衰减
wind-solar-hydrogen system
hydrogen production by electrolysis
production planning
power allocation strategy
life decay
