Annual Performance Analysis of Solar Aided Coal-Fired Power Plant with and without Heat Storage under Various Policy Conditions

  • ZHAI Rongrong ,
  • CHEN Yongan ,
  • ZHAO Yingxin ,
  • YANG Yongping
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  • 1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
    2. China Energy Digital Technology Group Co., Ltd., Beijing 100044, China

网络出版日期: 2025-05-06

基金资助

The research work is supported by the National Key Research and Development Program of China (No.2022YFB4202404).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Annual Performance Analysis of Solar Aided Coal-Fired Power Plant with and without Heat Storage under Various Policy Conditions

  • ZHAI Rongrong ,
  • CHEN Yongan ,
  • ZHAO Yingxin ,
  • YANG Yongping
Expand
  • 1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
    2. China Energy Digital Technology Group Co., Ltd., Beijing 100044, China

Online published: 2025-05-06

Supported by

The research work is supported by the National Key Research and Development Program of China (No.2022YFB4202404).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

摘要

在太阳能辅助燃煤系统(SACFPG)中,太阳辐照强度、运行工况都对系统有极大的影响。本文提出了在变太阳辐照强度、变工况运行条件下SACFPG系统的运行策略,提出了一种基于灰色关系分析的考虑经济性能、热力性能、环境性能的综合准则,用于评价不同政策条件下有/无存储的SACFPG系统的年性能。研究发现,太阳能补贴、碳税、燃料价格和太阳能场规模对系统性能有很大影响。结果表明,SACFPG系统的初始投资较高,动态回收期较长,但太阳能的加入提高了总热效率,环境性能更好。其中,带存储的SACFPG系统的热效率最高,为44.38%,二氧化碳排放量最低,为0.1114 kg/kWh。在太阳能补贴和碳排放税的政策下,经济表现得到了改善。因此,根据所提出的综合评价标准,有存储的SACFPG系统最高,为0.667,其次是燃煤电厂,无存储的SACFPG系统最差。随着技术的发展,SACFPG系统的成本将会更低,SACFPG的前景更加光明。

本文引用格式

ZHAI Rongrong , CHEN Yongan , ZHAO Yingxin , YANG Yongping . Annual Performance Analysis of Solar Aided Coal-Fired Power Plant with and without Heat Storage under Various Policy Conditions[J]. 热科学学报, 2025 , 34(3) : 899 -912 . DOI: 10.1007/s11630-025-2138-x

Abstract

Solar radiation and operation condition greatly influence solar aided coal-fired power generation (SACFPG) system. Based on a SACFPG system with its operating strategy considering both different direct normal insolation (DNI) and off-design load, a comprehensive criterion based on gray relation analysis considering the economic, thermal and environmental performance is proposed and used to evaluate of the annual performance of SACFPG system with/without storage under various policy conditions. It is found that solar subsidy, carbon tax, fuel price and the size of the solar field influence system’s performance greatly. The results show that the initial investment of a SACFPG system is higher and the dynamic payback period is longer, but the addition of solar energy makes the total thermal efficiency higher and the environmental performance better. Specifically, the SACFPG system with storage has the highest thermal efficiency of 44.38% and the lowest CO2 emissions of 0.1114 kg/kWh. Under polices of solar subsidy and carbon tax, the economic performance is remedied. Therefore, according to the proposed comprehensive evaluation criteria, SACFPG system with storage is the highest at 0.667, followed by coal-fired plant and SACFPG without storage is the worst. With the development of technology, the costs of SACFPG systems would be lower, and the future of SACFPG is even brighter.

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