摘要
为解决电解水制氢过程中氧气未充分利用、燃料电池供热潜力未充分开发等问题,提升微网的自治能力与经济效益,提出了面向微网的氢/热混合储能容量优化模型。本文将风电、储热系统、储氢系统相结合,分析微网中氢/热混合储能系统的架构、工作原理及其盈利模式;建立包含储氢罐、蓄热罐充放能模型及氢燃料电池热电联产模型的混合储能模型;以微网运行成本最小为目标,构建了计及设备投资成本、运维成本与富余氢、氧、热售卖收入的氢/热混合储能容量优化模型。以某实地微网为研究对象,分析了最优配置下混合储能的充放能功率和储能量的变化情况,对比不同场景下储能设备的总成本、配置容量及售能收入,发现所提出的模型能够促进氢、氧、热能的协同利用,有效提高微网的经济性与整体调控能力。
In order to solve the problems such as insufficient utilization of oxygen in the process of hydrogen production by electrolysis and insufficient development of fuel cell heating potential,and to improve the autonomy and economic benefits of the microgrid,a hydrogen/heat hybrid energy storage capacity optimization and its economic benefit analysis in microgrid system model considering fuel cell heat-electricity comprehensive utilization and surplus oxygen sales is proposed.First,the wind power,heat storage system,and hydrogen storage system are combined,and the architecture,working principle and profit model of the microgrid hydrogen/heat hybrid energy storage system are analyzed;then,a hybrid energy storage model including hydrogen storage tank,heat storage tank charging and discharging model and hydrogen fuel cell cogeneration model was established;on this basis,with the goal of minimizing the total daily cost of microgrid,a hydrogen/heat hybrid energy storage capacity optimization model which takes into account equipment investment costs,operation and maintenance costs,and surplus hydrogen,oxygen,and heat sales revenues was established.Finally,taking an actual microgrid as the research object,the changes in the charging and discharging power and energy storage of hybrid energy storage under the optimal configuration are analyzed.By comparing the total cost,configuration capacity and energy sales revenue of energy storage equipment in different scenarios,it is verified that the model proposed in this article can promote the coordinated utilization of hydrogen,oxygen,and heat,and effectively improve the economy and overall autonomous ability of the microgrid.
出处
《价格理论与实践》
北大核心
2022年第2期175-179,202,共6页
Price:Theory & Practice
关键词
热电综合利用
氢热混合储能
微网
氢燃料电池
容量优化
heat-electricity comprehensive utilization
hydrogen/heat hybrid energy storage
microgrid
hydrogen fuel cell
capacity optimization
