压缩空气储能电站浅埋人工储气洞库设计基本理念和方法

The basic design concept and method of a shallow rock cavern of a compressed air energy-storage power station

抽水蓄能和新型储能是实现碳达峰碳中和,支撑以新能源为主体新型电力系统的重要技术和基础装备。压缩空气储能(compressed air energy storage, CAES)是一种利用压缩空气作为介质来储存能量和发电的技术,是目前除抽水蓄能以外规模最大的物理储能方式,而硬岩浅埋型人工储气洞库选址灵活,具有规模化、商业化的发展潜力。面对我国大中型压缩空气储能电站开发建设形势和要求,结合国内外相关研究和工程实践经验,本文提出了硬岩条件下浅埋人工储气洞库整体稳定、局部稳定、循环稳定和密封层稳定的工程设计基本理念,总结提炼了洞库选址及地质勘探要求、埋深设计、储气库布置、结构设计、密封系统设计等方法,为压缩空气储能电站浅埋人工储气洞库设计提供借鉴和参考。

Pumped storage power stations and new energy storage are essential technologies for peaking carbon emissions and achieving carbon neutrality,supporting the development of new energy power networks.Compressed air energy storage(CAES)uses compressed air to store energy and generate electricity.It is currently the most significant physical energy-storage method apart from pumped storage power stations.Hard rock shallow-buried CAESs,with flexible site selection in artificial air-storage caverns,have the potential for large-scale and commercial development.Considering the situation and requirements for developing and constructing large and medium-sized CAESs in China,combined with relevant research and practical experience,the basic design concept for the overall,local,cycling,and sealing stability of shallow-buried artificial air-storage caverns under hard rock conditions is proposed.The requirements for site selection and geological exploration requirements,burial-depth design,storage cavern layout,structural design,and sealing system design method are summarized.This study would provide reference and guidance for designing shallow-buried artificial air-storage caverns in compressed air energy-storage power stations.