摘要
压缩气体储能是一种新兴的长时、大规模储能技术,近年来在中国发展迅速。空气和CO_(2)是压缩气体储能常用的两种工质。首先,在梳理压缩气体储能主要技术路线的基础上,聚焦绝热压缩气体储能,分析了系统结构和性能,重点论述了循环效率的影响因素。其次,选取典型的系统为对象,进行了投资成本和度电成本分析。最后,探讨了压缩气体储能发展趋势,认为压缩空气(CO_(2))储能和液态空气(CO_(2))储能有各自不同的发展方向:先进绝热压缩空气储能技术已趋于成熟,100 MW级以上规模的效率已逐渐逼近抽水蓄能,单位投资成本和全生命期度电成本已开始超越同规模抽水蓄能,建议加强政策支持,进一步完善产业配套,以快速形成产业优势;压缩CO_(2)储能和液态空气(CO_(2))储能技术还不成熟,投资成本和度电成本较高,但发展潜力较大,建议加强产学研结合,尽快提升技术成熟度,同时给予一定的电价政策和并网政策支持,以促进示范项目的建设。
A new,large-scale,long-term energy storage technology that has emerged quickly in China in recent years is compressed gas energy storage.Two popular working media for compressed gas energy storage are CO_(2)and air.After analyzing the basic technological pathways of compressed gas energy storage,this papers concentrates on adiabatic compressed gas energy storage,evaluates its system structure and performance,and focuses on the influencing elements of cycle efficiency.It also chooses an object that is representative of dif ferent systems and examines their investment costs and LCOE.Lastly,it talks about the growth trend of compressed gas energy storage and concludes that the development paths of compressed air(CO_(2))energy storage and liquid air(CO_(2))energy storage are distinct.According to the paper,the technology of advanced adiabatic compressed air energy storage has reached a mature state,with the efficiency of 100 MW or more having gradually surpassed that of pumped storage.And its unit investment cost and whole-life LCOE have started to surpass that of pumped storage of the same scale.The paper therefore suggests bolstering policy support and upgrading industrial supporting infrastructure,in order to quickly establish industrial advantages.On the other hand,the paper notes that although having significant development potential,compressed CO_(2)and liquid air(CO_(2))energy storage technologies are currently in their infancy due to high investment and LCOE costs.So,in order to promote the creation of demonstration projects,the paper recommends improving industry,academic,and research integration,putting policies in place that support grid connection and power pricing,and taking immediate action to improve technology maturity.
作者
吴全
孙春良
郭海涛
王秋麟
李育天
续元庆
徐奇
郑坚钦
WU Quan;SUN Chunliang;GUO Haitao;WANG Qiulin;LI Yutian;XU Yuanqing;XU Qi;ZHENG Jianqin(PetroChina Planning and Engineering Institute;PipeChina Beijing Gas Pipeline Co.Ltd.)
出处
《油气与新能源》
2023年第6期90-98,共9页
Petroleum and new energy
基金
中国石油天然气股份有限公司规划总院基础课题《油气田储能技术筛选评价研究》(G2023-601)。
