Energy Conversion Characteristics of Underwater Compressed Air Energy Storage System Considering Offshore Wind Fluctuation

LI Mengjie; LIU Zhanbin; HE Yaling; ZHU Shurong

doi:10.7652/xjtuxb202502001

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Energy Conversion Characteristics of Underwater Compressed Air Energy Storage System Considering Offshore Wind Fluctuation

更新时间：2026-01-06

- Energy Conversion Characteristics of Underwater Compressed Air Energy Storage System Considering Offshore Wind Fluctuation
- Journal of Xi’an Jiaotong University Vol. 59, Issue 2, Pages: 1-12(2025)
- 作者机构：
  
  1.西安交通大学国家储能技术产教融合创新平台（中心）， 710049，西安
  2.中国能源建设集团装备有限公司， 100044，北京
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202502001
  CLC： TK123
- Received：07 May 2024，
  
  Online First：19 August 2024，
  
  Published：10 February 2025
- 稿件说明：
移动端阅览
LI Mengjie, LIU Zhanbin, HE Yaling, et al. Energy Conversion Characteristics of Underwater Compressed Air Energy Storage System Considering Offshore Wind Fluctuation[J]. Journal of Xi’an Jiaotong University, 2025, 59(2): 1-12.
DOI：

LI Mengjie, LIU Zhanbin, HE Yaling, et al. Energy Conversion Characteristics of Underwater Compressed Air Energy Storage System Considering Offshore Wind Fluctuation[J]. Journal of Xi’an Jiaotong University, 2025, 59(2): 1-12. DOI： 10.7652/xjtuxb202502001.

摘要

为准确揭示海上风能波动性对水下压缩空气储能系统性能的影响规律，以先进绝热水下压缩空气储能系统为研究对象，首先，建立考虑风能波动性的海上风电-储能系统热力学模型；接着，提出关键设计参数的设计流程；最后，分析了额定工况与变工况条件下储能系统的能量转化特性。研究结果表明：随着导热油与空气质量流量之比

的增加，水下输气管道散热损失与冷油罐散热损失的变化趋势相反，同时存在

最优值为1.41，使得系统热损失最小，对应的最大系统能量往返效率

为60.3%；设计工况下，储热与换热单元的

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80751798&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80751760&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80751789&type=

损失最大，约占总损失的36.6%；稳定风速下，当风速偏离设计基础风速时，压缩机与膨胀机的效率降低，导致

降低；扰动风速下，随着扰动风分量最大值

max

增加，受风机额定风速与切出风速的限制，

max

对储能系统平均发电功率的影响区域可分为快速增长区、增长减缓区以及降低区，3个区域内的

均低于额定稳定工况下的设计值。研究可为水下压缩空气储能与海上风电的集成应用提供理论指导。

Abstract

To accurately assess the impact of offshore wind (OW) fluctuations on the performance of the underwater compressed air energy storage (UWCAES) system

an advanced adiabatic UWCAES was employed as the subject of investigat

ion

firstly

a thermodynamic model of OW-UWCAES was established

followed by the introduction of a design methodology for key operational parameters

and finally the energy conversion characteristics of the UWCAES system were analyzed under rated and variable working conditions in this paper. The results show that: As the ratio of thermal oil to air mass flow rate (

) increased

the heat losses in the underwater gas pipeline and cold oil tank exhibited opposite trends. An optimal

existed that minimized the system's heat loss

corresponding to the highest round-trip efficiency (

). The optimal

under the study's design conditions is 1.41

resulting in an

of 60.3%. Under the design condition

thermal storage and heat exchange units exhibited the highest exergy losses

accounting for 36.6% of the total exergy losses. For stable wind speeds

deviations from the design wind speed decreased the efficiency of the compressor and expander

leading to a reduction in

. For disturbing wind speeds

as the maximum value of the disturbing wind component (

max

) increased

its impact on average power generation transitioned through a rapidly increasing region

an increasing deceleration region

and a decreasing region due to limitations from the rate wind speed and cut-out speed. In all three regions

the

is lower than the design value under rated stable conditions. This study can provide a theoretical guidance for the integrated application of underwater compressed air energy storage and offshore wind power.

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Keywords

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