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Author:

Wei, H. (Wei, H..) | Lu, Y. (Lu, Y..) | Yang, Y. (Yang, Y..) | Wu, Y. (Wu, Y..) | Zheng, K. (Zheng, K..) | Li, L. (Li, L..)

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EI Scopus SCIE

Abstract:

The flexible mode of operation of coal-fired units can accommodate large-scale renewable power integration into the grid, providing more grid capacity. The flexibility transformation of coal-fired units in thermal power plants can be achieved through main steam extraction and reheated steam extraction. A 300 MW subcritical unit, 600 MW subcritical unit and 660 MW ultra-supercritical unit with six flexible operation modes were chosen as the research model to investigate the thermal adaptability for flexible operation. The results show that from the perspective of the source of steam extraction, the main steam extraction scheme is suitable for the flexible adjustment of peak load capacity, and the reheated extraction scheme is suitable for the flexible operation of low load and high thermal efficiency. Moreover, from the perspective of thermal performance adaptability, the 600 MW unit has a wider load regulation capacity than the 300 MW and 660 MW units, and is suitable as the peak shaving unit. This work can provide theoretical guidance for different types of coal-fired units in choosing flexible operation schemes. © 2024 by the authors.

Keyword:

thermal energy storage flexible operation coal-fired power unit main steam extraction reheated steam extraction

Author Community:

  • [ 1 ] [Wei H.]China North Vehicle Research Institute, Beijing, 100072, China
  • [ 2 ] [Lu Y.]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Faculty of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 3 ] [Yang Y.]School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
  • [ 4 ] [Wu Y.]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Faculty of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 5 ] [Zheng K.]China North Vehicle Research Institute, Beijing, 100072, China
  • [ 6 ] [Li L.]Inner Mongolia Daihai Power Generation Co., Ltd., Liangcheng County, Ulanqab, 013750, China

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Source :

Energies

ISSN: 1996-1073

Year: 2024

Issue: 9

Volume: 17

3 . 2 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 10

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