摘要
为了减轻可再生能源对电网稳定性的冲击,需发展储能。作为一种大规模长时储能方式,压缩空气储能受到广泛关注,并很快成为当前的研发热点。对于隧道式人工硐库,尤其是直线型隧道式储气库,充气阶段硐库末端低速气体与进气端高速低温来流热交换少,难以及时散热,致使硐库进气端与末端温差逐渐增加。然而,过高的温差会影响硐库密封材料的耐久性,不利于密封结构受力,需采取必要的措施。基于伯努利效应,提出在硐库中心位置增设温控管的方案,通过调整硐库内空气流线,增强来流高速冷空气与库存低速热空气的混合,实现了空气在硐库的内循环。在优化温控方案参数后,可以有效降低硐库空气温差。结果显示,最优方案能够将地下硐库的温差控制在80℃,具有较高的实用价值和研发空间。
To mitigate the impact of renewable energy on the stable operation of power grids,the development of energy storage systems is necessary.Compressed air energy storage,as a large-scale long-duration energy storage system,has attracted widespread attention.In tunnel-type artificial caverns,heat exchange between the gas at the cavern end and the incoming cold airflow is limited during inflation.Consequently,the air temperature increases rapidly during pressurization,producing a pronounced temperature gradient between the inlet and the cavern end.The excessively high temperature affects the durability of the sealing materials at the end of the cavern,which is detrimental to the force-bearing of the sealing structure,necessitating the adoption of necessary temperature control measures.Based on the Bernoulli effect,this paper proposes a scheme to add a temperature control pipe at the central axis position of the cavern.By adjusting the airflow lines within the cavern,the mixing between incoming air and the existing air is enhanced,thereby promoting internal air circulation within the cavern.After optimizing the parameters of the temperature control scheme,the temperature difference within the cavern can be effectively reduced.The results show that the optimized scheme can keep the temperature difference within the underground cavern below 80℃,which has high practical value and research and development potential.
作者
刘顺
程昊德
贾宁
王洪播
尹宏磊
LIU Shun;CHENG Hao-de;JIA Ning;WANG Hong-bo;YIN Hong-lei(North China Power Engineering Co.,Ltd.of China Power Engineering Consulting Group,Beijing 100120,China)
出处
《岩土力学》
北大核心
2026年第2期539-548,共10页
Rock and Soil Mechanics
关键词
压缩空气储能
人工硐库
温控方案
计算流体力学
compressed air energy storage
artificial caverns
temperature control scheme
computational fluid dynamics
