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Feasibility study of AGC frequency regulation technology for aqueous organic redox flow battery energy storage assisted thermal power units
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Linfan XU1, Pengyue WU1, Yun ZHENG2, Feng WANG2, Jing WANG3, Zhen KANG1, Hao GUO1, Yibin LIN2, Xuhua LIU1, Zhipeng LI1
Thermal Power Generation | 2026, 55(2) : 86 - 94
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Thermal Power Generation | 2026, 55(2): 86-94
• Peak shaving and frequency regulation technology for energy storage system coupled with thermal power unit •
Feasibility study of AGC frequency regulation technology for aqueous organic redox flow battery energy storage assisted thermal power units
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Linfan XU1, Pengyue WU1, Yun ZHENG2, Feng WANG2, Jing WANG3, Zhen KANG1, Hao GUO1, Yibin LIN2, Xuhua LIU1, Zhipeng LI1
Affiliations
  • 1.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
  • 2.Huaneng Luoyuan Power Generation Co., Ltd., Fuzhou 350602, China
  • 3.Suqian Time Energy Storage Technology Co., Ltd., Suqian 223805, China
Published: 2026-02-25 doi: 10.19666/j.rlfd.202510015
Outline
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[Objective]

To address the pressing demand for grid frequency stability under high-proportion renewable energy integration and mitigate the slow frequency regulation response of thermal power units, aqueous organic redox flow batteries (AORFBs) have emerged as a viable technical solution for frequency regulation scenarios due to their advantages of long cycle life and low self-discharge rate.

[Methods]

A thermal-storage combined AGC frequency regulation technology utilizing AORFBs for energy storage is presented. The fundamental principles of coordinated thermal-storage technology and AORFBs are elaborated, the core performance parameters of flow batteries are tested, a frequency regulation control strategy for AORFBs-assisted thermal power units is proposed, and this approach is applied to the 200 kW/400 kW·h thermal-storage combined frequency regulation demonstration project at Luoyuan Power Plant.

[Results]

Operational data and analytical testing demonstrate that AORFBs exhibit rapid regulation and precise output response characteristics, thereby enhancing the frequency regulation capability of the combined system.

[Conclusion]

Applying AORFBs to thermal power frequency regulation is feasible.

aqueous organic redox flow battery  /  energy storage  /  thermal power unit  /  AGC frequency regulation  /  power response
Linfan XU, Pengyue WU, Yun ZHENG, Feng WANG, Jing WANG, Zhen KANG, Hao GUO, Yibin LIN, Xuhua LIU, Zhipeng LI. Feasibility study of AGC frequency regulation technology for aqueous organic redox flow battery energy storage assisted thermal power units[J]. Thermal Power Generation, 2026 , 55 (2) : 86 -94 . DOI: 10.19666/j.rlfd.202510015
Funding
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  • Science and Technology Project of China Huaneng Group Co., Ltd.(HNKJ24-H84)
Appendix
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Year 2026 volume 55 Issue 2
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Article Info
doi: 10.19666/j.rlfd.202510015
  • Receive Date：2025-10-11
  • Online Date：2026-08-14
  • Published：2026-02-25
Article Data
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History
  • Received：2025-10-11
  • Revised：2025-10-21
  • Accepted：2025-11-05
Funding
Science and Technology Project of China Huaneng Group Co., Ltd.(HNKJ24-H84)
Affiliations
    1.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
    2.Huaneng Luoyuan Power Generation Co., Ltd., Fuzhou 350602, China
    3.Suqian Time Energy Storage Technology Co., Ltd., Suqian 223805, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202510015
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