Dynamic characteristics analysis of 350 MW-scale advanced adiabatic compressed air energy storage system

YAO Erren; XI Guang; ZHONG Like; ZOU Hansen; HU Jun; ZHANG Wujun; ZHOU Manfu; FU jianbo; HUA Lijun

doi:10.7652/xjtuxb202402000

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Dynamic characteristics analysis of 350 MW-scale advanced adiabatic compressed air energy storage system

更新时间：2025-11-18

- Dynamic characteristics analysis of 350 MW-scale advanced adiabatic compressed air energy storage system
- JOURNAL OF XI’AN JIAOTONG UNIVERSITY (2025)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院,陕西省西安市710049
  2.云南省能源投资集团有限公司,云南省昆明市650032
  3.中国能源建设集团云南省电力设计院有限公司,云南省昆明市650051
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202402000
  CLC： TK02
- Received：04 September 2025，
  
  Revised：2025-11-04，
  
  Accepted：04 November 2025，
- 稿件说明：
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YAO Erren, XI Guang, ZHONG Like, et al. Dynamic characteristics analysis of 350 MW-scale advanced adiabatic compressed air energy storage system[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2025.
DOI：

YAO Erren, XI Guang, ZHONG Like, et al. Dynamic characteristics analysis of 350 MW-scale advanced adiabatic compressed air energy storage system[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2025. DOI： 10.7652/xjtuxb202402000.

摘要

针对压缩空气储能系统高效经济运行面临的热压高效转化与有限储气装置容积充分利用挑战，本文以350 MW级先进绝热压缩空气储能系统为研究对象，引入滑压补气运行策略降低释能过程节流损失进而提升系统整体储能密度，通过将系统分为储能段、释能段和系统整体三个层面，建立系统内各设备的全工况热力学计算模型，研究了不同模式与运行策略下系统压比、膨胀比、功率等关键参数在全运行工况域内的动态运行特性。结果表明压缩机机组和透平机机组在偏离设计点运行时，压缩机机组后段和透平机机组后段的热力参量变化幅度均高于对应前段机组；随着滑压补气点压力的升高，系统的运行时间和能量效率均逐渐升高，表明滑压补气运行策略能够充分利用有限储气装置空间，并有效提升系统的储能密度；通过对比系统在不同运行策略实现电力满发的热力参量动态运行特性，节流-滑压补气运行策略较全节流运行策略最高能够提升系统能量效率1.43%。研究结果为350 MW级先进绝热压缩空气储能系统在工程应用中的全工况运行调控提供理论支撑。

Abstract

To address the cost-effective challenges of attaining efficient thermal-pressure conversion and maximizing the use of limited volume of air storage vessel in compressed air energy storage system

this study investigates a 350-MW advanced adiabatic compressed air energy storage system and conducts a sliding-pressure air supply strategy during discharging process to reduce throttling losses and thereby increase the energy storage density of the system. The system is partitioned into the charging

discharging

and system-level layers. Design and off-design thermodynamic models are established to simulate operation performance and to examine the dynamic behavior of key operating parameters

i.e.

pressure ratio

expansion ratio

and power

across the full operating area under different operating modes and control strategies. The results show that when the compressor train and the turbine train operate under off-design conditions

the thermodynamic parameters in the latter stages of the compressor train and the turbine train exhibit larger variations than those of in the front stages. As the pressure of the sliding-pressure air supply point increases

both the operating period and the system energy efficiency increased

indicating that sliding-pressure operation can more fully utilize the limited storage volume and enhance the energy storage density effectively. By comparing the dynamic thermodynamic characteristics associated with rated power output under different operating modes

the proposed throttling and sliding-pressure air supply strategy can increase the system energy efficiency by up to 1.43% relative to conventional throttling strategy. These findings provide theoretical support for operational control of the 350-MW advanced adiabatic compressed air energy storage system across the full operating area in engineering applications.

关键词

Keywords

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