废弃矿地下空间储能方案及性能  

Energy Storage Scheme and Performance Evaluation in Underground Spaces of Abandoned Mines

作　　者：卜宪标 王一鸣[1,2] 刘石[3,4] 杨毅 陈洪年 李华山 舒杰[1,2] 王令宝 BU Xianbiao;WANG Yiming;LIU Shi;YANG Yi;CHEN Hongnian;LI Huashan;SHU Jie;WANG Lingbao(School of Energy Science and Engineering,University of Science and Technology of China,Guangzhou 510640,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;China Southern Grid Power Technology Co.,Ltd.,Guangzhou 510080,China;National Institute of Guangdong Advanced Energy Storage,Guangzhou 510080,China;Shandong Provincial Lunan Geo-Engineering Exploration Institute(The Second Geological Brigade of Shandong Provincial Geology and Mineral Resources Bureau),Jining,Shandong 272100,China)

机构地区：[1]中国科学技术大学能源科学与技术学院,广州510640 [2]中国科学院广州能源研究所,广州510640 [3]南方电网电力科技股份有限公司,广州510080 [4]广东新型储能国家研究院有限公司,广州510080 [5]山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队),山东济宁272100

出　　处：《西安交通大学学报》2024年第10期145-155,共11页Journal of Xi'an Jiaotong University

基　　金：山东省重点研发计划(重大科技创新工程)资助项目(2023CXGC010904);国家重点研发计划(中埃国际合作)资助项目(2022YFE0120700);广东省重点领域研发计划资助项目(2023B0909060004)。

摘　　要：为高效利用废弃煤矿地下空间,提出了废弃矿地下巷道储存热能和电能的方案。基于气水互驱原理并利用沉降区人工湖,提出了定压压缩空气储能的新思路以高效利用地下空间并提高储能性能,构建了废弃地下巷道储热、抽水蓄能、定容和定压压缩空气储能的数学模型并进行了数值求解,分析了储热和储电性能,对比了储能密度和能量回收效率,探索了定压压缩空气储能的高值化利用方式。结果表明:①地下巷道储热可解决太阳能光热的不稳定性和跨季节储存难题,热回收效率大于98%,储能密度为653.42 kJ/(m^(3)·d^(-1)),折算电能为0.18 kW·h/(m^(3)·d^(-1));②地下巷道抽水蓄能、定容和定压压缩空气储能的能量回收效率和储能密度分别为70.56%、57.76%、67.64%和1.14、2.25、5.56 kW·h/(m^(3)·d^(-1)),因残余气少,储释能过程总压比和膨胀比不变,定压压缩空气储能性能优异;③通过地上发电地下储能,可将废弃矿场打造为集发电储电和冷热淡冰联产于一体的新能源供应中心。研究成果可为废弃矿地下空间储能工程提供决策依据,为可再生能源配储提供支撑。To efficiently utilize the underground spaces of abandoned coal mines,a comprehensive scheme is proposed for the storage of thermal and electrical energy in abandoned underground tunnels.The scheme is based on the gas-water displacement principle and makes use of an artificial lake located in the subsidence area.A novel constant-pressure compressed air energy storage approach is introduced to maximize the utilization of underground space and enhance energy storage performance.Mathematical models are developed and numerically solved for thermal energy storage,pumped storage,constant-volume compressed air energy storage,and constant-pressure compressed air energy storage.The performance of thermal and electrical energy storage is thoroughly analyzed,comparing energy storage density and energy recovery efficiency.Furthermore,the high-value utilization of constant-pressure compressed air energy storage is explored.The results demonstrate that:①Underground tunnel thermal energy storage proves to be a viable solution for addressing the challenges of instability and seasonal storage associated with solar thermal energy.The thermal recovery efficiency exceeds 98%,and the energy storage density reaches 653.42 kJ/(m^(3)·d^(-1)),which is equivalent to 0.18 kW·h/(m^(3)·d^(-1))of electrical energy.②The energy recovery efficiency and energy storage density of underground tunnel pumped storage,constant-volume compressed air energy storage,and constant-pressure compressed air energy storage are determined to be 70.56%,57.76%,67.64%,and 1.14,2.25,5.56 kW·h/(m^(3)·d^(-1)),respectively.Notably,the constant-pressure compressed air energy storage exhibits outstanding performance due to the limited residual gas,which ensures the constancy of the total pressure ratio and expansion ratio throughout the energy storage and release process.③By synergizing above-ground power generation with underground energy storage,the abandoned mine site can be transformed into a highly efficient energy supply center that integrates power gene

关 键 词：废弃矿储能 废弃矿地下空间 废弃矿储热 压缩空气储能 定压压缩空气储能 

分 类 号：TK82[动力工程及工程热物理—流体机械及工程] TK512