Home Journals Articles Updates About
CN
image
收藏切换
Thermodynamic decoupling and peak-shaving research on a 660 MW coal-fired unit coupled with AA-CAES system
收藏切换
PDF
Chuankun XU1, Jie ZHANG2, Xingchi MA1, Lei LI2
Thermal Power Generation | 2026, 55(2) : 95 - 107
Less
收藏切换
Thermal Power Generation | 2026, 55(2): 95-107
• Peak shaving and frequency regulation technology for energy storage system coupled with thermal power unit •
Thermodynamic decoupling and peak-shaving research on a 660 MW coal-fired unit coupled with AA-CAES system
Full
Chuankun XU1, Jie ZHANG2, Xingchi MA1, Lei LI2
Affiliations
  • 1.College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
  • 2.China Power Engineering Consulting Group East China Electric Power Institute, Shanghai 200063, China
Published: 2026-02-25 doi: 10.19666/j.rlfd.202506132
Outline
收藏切换

The large-scale integration of renewable energy poses significant challenges to the peak-shaving capacity of coal-fired units. To enhance operational flexibility and address energy flow conflicts in typical coal-fired systems coupled with compressed air energy storage systems during peak shaving, this study investigates a 660 MW coal-fired unit using EBSILON software. Three energy storage schemes and two energy release schemes are proposed and evaluated through thermo-economic analysis, focusing on thermal-time decoupling capability, peak-shaving paradox elimination, and system performance. The results show that during energy storage, the scheme utilizing intermediate-pressure cylinder exhaust for thermal oil heating achieves the highest thermal storage gain ratio (1.370) and the lowest heat rate (8 814.976 kJ/(kW·h)). During energy release, the scheme absorbing heat from No.3 high-pressure heater drain outlet yields the minimum heat rate (7 547.945 kJ/(kW·h)). After 8 hours of operation, the system retains 38.503 MW·h of utilizable thermal energy and reduces the peak-shaving paradox index to –0.041. Parameter optimization improves the round-trip efficiency of the compressed air energy storage system by 2.702 percentage points and increases the unit’s peak-shaving depth by 2.481%. This study provides a viable solution for synergistic optimization of coal-fired units and energy storage systems.

compressed air energy storage system  /  coal-fired unit  /  coupling system  /  thermal decoupling  /  dееp pеak shaving  /  peak shaving paradox  /  round-trip efficiency
Chuankun XU, Jie ZHANG, Xingchi MA, Lei LI. Thermodynamic decoupling and peak-shaving research on a 660 MW coal-fired unit coupled with AA-CAES system[J]. Thermal Power Generation, 2026 , 55 (2) : 95 -107 . DOI: 10.19666/j.rlfd.202506132
Funding
Less
  • Key Science and Technology Program of China Power Engineering Consulting Group(DG-J02-2022)
Appendix
Less
Year 2026 volume 55 Issue 2
PDF
220
109
Cite this Article
BibTeX
Article Info
doi: 10.19666/j.rlfd.202506132
  • Receive Date：2025-06-30
  • Online Date：2026-08-14
  • Published：2026-02-25
Article Data
Affiliations
History
  • Received：2025-06-30
  • Revised：2025-08-31
  • Accepted：2025-09-04
Funding
Key Science and Technology Program of China Power Engineering Consulting Group(DG-J02-2022)
Affiliations
    1.College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    2.China Power Engineering Consulting Group East China Electric Power Institute, Shanghai 200063, China
References
Share
https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202506132
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House