Process design, operation and economic evaluation of compressed air energy storage (CAES) for wind power through modelling and simulation
Process design, operation and economic evaluation of compressed air energy storage (CAES) for wind power through modelling and simulation
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DOI：
10.1016/j.renene.2019.01.043
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发表时间：
2019-06
期刊：
影响因子：
8.7
通讯作者：
Hui Meng;Meihong Wang;Olumide Olumayegun;Xiaobo Luo;Xiaoyan Liu
中科院分区：
文献类型：
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作者：
Hui Meng;Meihong Wang;Olumide Olumayegun;Xiaobo Luo;Xiaoyan Liu
压缩空气储能（CAES）与波动的风力发电相结合，可以在平衡电力供需方面发挥重要作用。本研究旨在通过过程仿真研究风电CAES系统在设计工况和非设计工况下的设计与运行。在Aspen Plus®中开发并验证了用于风力发电的压缩机、涡轮机和CAES系统的改进稳态模型。在Excel中建立了洞室的拟动力模型。压气机和透平特性曲线用于模型开发过程分析。在非设计分析中，风电CAES系统在变轴转速模式下比恒轴转速模式下利用了更多的多余风能（49.25 MWh），储存了更多的压缩空气（51.55 × 103kg），产生了更多的电力（76.00 MWh），并提供了更长的放电时间。利用Aspen Process Economic Analyser®进行了基于平准化电力成本（LCOE）的经济评价，发现变轴转速模式下风电CAES系统的LCOE低于定轴转速模式下的LCOE。本文的研究希望对风电CAES系统的设计和运行以及降低成本有所启发。
Compressed air energy storage (CAES) could play an important role in balancing electricity supply and demand when linked with fluctuating wind power. This study aims to investigate design and operation of a CAES system for wind power at design and off-design conditions through process simulation. Improved steady-state models for compressors, turbines and the CAES system for wind power were developed in Aspen Plus® and validated. A pseudo-dynamic model for cavern was developed in Excel. Compressor and turbine characteristic curves were used in model development for process analysis. In the off-design analysis, it was found that the CAES system for wind power at variable shaft speed mode utilise more excess wind energy (49.25 MWh), store more compressed air (51.55 × 103kg), generate more electricity (76.00 MWh) and provide longer discharging time than that at constant shaft speed mode. Economic evaluation based on levelized cost of electricity (LCOE) was performed using Aspen Process Economic Analyser®, it was found that LCOE for the CAES system for wind power at variable shaft speed mode is lower than that at constant shaft speed mode. Research presented in this paper hopes to shed light on design and operation of the CAES system for wind power and cost reduction.