基于Aspen Plus的等压压缩空气储能系统性能仿真及分析  

Performance simulation and analysis of an isobaric compressed air energy storage system based on Aspen Plus

作　　者：胡雪如 邢令利 李原圆 苏文 刘鹏飞 丁若晨 蔺新星 HU Xueru;XING Lingli;LI Yuanyuan;SU Wen;LIU Pengfei;DING Ruochen;LIN Xinxing(College of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;School of Energy Science and Engineering,Central South University,Changsha 410083,China;Science and Technology Research Institute,China Three Gorges Corporation,Beijing 100038,China)

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201 [2]中南大学能源科学与工程学院,长沙410083 [3]中国三峡集团科学技术研究所,北京100038

出　　处：《综合智慧能源》2024年第12期72-80,共9页Integrated Intelligent Energy

基　　金：国家自然科学基金项目(52106037);湖南省自然科学基金项目(2024JJ6218)。

摘　　要：压缩空气储能是解决可再生能源发电并网、提高电网稳定性的有效方法。为减少储气库体积、维持系统工况稳定,采用工业流程模拟软件Aspen Plus建立了100 MW×4 h等压压缩空气储能(I-CAES)系统的热力学仿真模型,计算了设计工况下的系统性能,分析了压缩机出口温度及压缩膨胀级数对系统运行的影响。结果表明,当压缩机出口温度为160℃时,4级压缩-4级膨胀的I-CAES系统储能效率可达62.61%,储能密度为5.99 k W·h/m^(3);压缩机出口温度每升高10℃,储能密度及效率分别增加2.66 k W·h/m^(3),1.49百分点;压缩膨胀级数每增加1,储能密度及效率分别增加6.34 k W·h/m^(3),0.81百分点。Compressed air energy storage(CAES)is an effective solution for integrating renewable energy generation into the grid and improving grid stability.To reduce the volume of the air storage reservoir and maintain stable system operation,a thermodynamic simulation model for a 100 MW×4 h isobaric compressed air energy storage(I-CAES)system was developed using the industrial process simulation software Aspen Plus.The system's performance was calculated under design conditions,and the effects of compressor outlet temperature and the number of compression-expansion stages on system operation were analyzed.The results showed that when the compressor outlet temperature was 160℃,the I-CAES system with 4 compression and 4 expansion stages achieved an energy storage efficiency of 62.61%and an energy storage density of 5.99 kW·h/m^(3).For every 10℃increase in compressor outlet temperature,both the energy storage density and efficiency increased by 2.66 kW·h/m^(3)and 1.49 percentage points,respectively.Additionally,for each additional compression-expansion stage,the energy storage density and efficiency increased by 6.34 kW·h/m^(3)and 0.81 percentage points,respectively.

关 键 词：等压压缩空气储能 可再生能源 Aspen Plus 压缩机出口温度 压缩膨胀级数 储能效率 储能密度 

分 类 号：TK02[动力工程及工程热物理]