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Analysis of the Operating Characteristics of a Photothermal Storage Coupled Power Station Based on the Life-Cycle-Extending Renovation of Retired Thermal Power Units

Author

Listed:
  • Fangfang Wang

    (State Grid Henan Electric Power Company, Zhengzhou 450045, China)

  • Renjie Li

    (School of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Guangjin Zhao

    (State Grid Henan Electric Power Company, Zhengzhou 450045, China)

  • Dawei Xia

    (State Grid Henan Electric Power Company, Zhengzhou 450045, China)

  • Weishu Wang

    (School of Ural Institute, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

Abstract

To address China’s small coal power units facing shutdown and retirement, which urgently need life cycle extension and renovation, a complete solar thermal storage simulation power generation system based on the original site of a decommissioned thermal power unit is developed using Ebsilon software in this study. The operational characteristics of the simulated system are studied in depth to build a system with integrity and stability that can carry out economic and stable power production. The results of simulation tests on the solar collector system and the thermal storage subsystem show that the energy storage rate of the energy storage subsystem is affected by light intensity and significantly increases at approximately 8:00 a.m. The annual power generation capacity of the system is influenced by the energy storage hours set by the energy storage subsystem, and the annual power generation capacity increases more significantly when the energy storage hours are controlled within the range of 5–8 h. The operating efficiency of the corresponding subsystem can be improved by selecting a suitable location for the light intensity required and controlling the effective reflectivity of the mirror field and the energy storage hours, which can ensure the system’s stable operation. The research results provide theoretical guidance for reusing and transforming retired thermal power units.

Suggested Citation

  • Fangfang Wang & Renjie Li & Guangjin Zhao & Dawei Xia & Weishu Wang, 2024. "Analysis of the Operating Characteristics of a Photothermal Storage Coupled Power Station Based on the Life-Cycle-Extending Renovation of Retired Thermal Power Units," Energies, MDPI, vol. 17(4), pages 1-14, February.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:4:p:792-:d:1334764
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    References listed on IDEAS

    as
    1. Huang, Chang & Hou, Hongjuan & Hu, Eric & Liang, Mingyu & Yang, Yongping, 2017. "Impact of power station capacities and sizes of solar field on the performance of solar aided power generation," Energy, Elsevier, vol. 139(C), pages 667-679.
    2. Yang, Tingting & Liu, Ziyuan & Zeng, Deliang & Zhu, Yansong, 2023. "Simulation and evaluation of flexible enhancement of thermal power unit coupled with flywheel energy storage array," Energy, Elsevier, vol. 281(C).
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