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Study on Optimized Dispatch and Operation Strategies for Heliostat Fields in a Concentrated Solar Power Tower Plant

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  • Dongchang You

    (Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Beijing 100190, China
    Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    Beijing Engineering Research Center of Solar Thermal Power, Beijing 100190, China)

  • Qiang Yu

    (Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Beijing 100190, China
    Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    Beijing Engineering Research Center of Solar Thermal Power, Beijing 100190, China)

  • Zhifeng Wang

    (Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Beijing 100190, China
    Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    Beijing Engineering Research Center of Solar Thermal Power, Beijing 100190, China)

  • Feihu Sun

    (Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Beijing 100190, China
    Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    Beijing Engineering Research Center of Solar Thermal Power, Beijing 100190, China)

Abstract

Concerning solar flux densities during the operation of a concentrated solar power tower plant, their uneven distribution on a central receiver not only leads to abrupt variations of thermal gradient on the receiver surface but also makes it possible for the receiver to break down. Specific to such problems, a “concentrating-receiver” coupling system of a 1 MWe concentrated solar power tower plant in Yanqing was selected as the research object. On this basis, a spliced heliostat model was firstly established in this paper. The model was used to investigate solar flux distribution on the receiver surface. Considering that heliostats in different positions make diverse contributions to receiver surface energy and the incidence cosines of adjacent heliostats are similar to each other, a new grouping method for heliostat fields was subsequently proposed; moreover, focal point selection criteria were designed for the receiver surface according to solar spot sizes. Finally, an optimized dispatch and operation strategy was established based on the genetic algorithm for the heliostat field. Therefore, a standard deviation of solar flux distribution can be minimized. To verify the reliability of the established model and the proposed strategy, a small-scale heliostat field was adopted to check the simulation results by means of experiments. It has been demonstrated that a heliostat field subjected to optimized dispatch makes solar flux densities distribute more uniformly on the receiver surface. Hence, the safe and steady operation of the receiver is guaranteed.

Suggested Citation

  • Dongchang You & Qiang Yu & Zhifeng Wang & Feihu Sun, 2019. "Study on Optimized Dispatch and Operation Strategies for Heliostat Fields in a Concentrated Solar Power Tower Plant," Energies, MDPI, vol. 12(23), pages 1-24, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:23:p:4544-:d:292094
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    References listed on IDEAS

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    1. Yu, Qiang & Wang, Zhifeng & Xu, Ershu, 2014. "Analysis and improvement of solar flux distribution inside a cavity receiver based on multi-focal points of heliostat field," Applied Energy, Elsevier, vol. 136(C), pages 417-430.
    2. Jorge M. Llamas & David Bullejos & Manuel Ruiz de Adana, 2019. "Optimization of 100 MW e Parabolic-Trough Solar-Thermal Power Plants Under Regulated and Deregulated Electricity Market Conditions," Energies, MDPI, vol. 12(20), pages 1-23, October.
    3. Desideri, Umberto & Campana, Pietro Elia, 2014. "Analysis and comparison between a concentrating solar and a photovoltaic power plant," Applied Energy, Elsevier, vol. 113(C), pages 422-433.
    4. Behar, Omar & Khellaf, Abdallah & Mohammedi, Kamal, 2013. "A review of studies on central receiver solar thermal power plants," Renewable and Sustainable Energy Reviews, Elsevier, vol. 23(C), pages 12-39.
    5. Ballestrín, J. & Casanova, M. & Monterreal, R. & Fernández-Reche, J. & Setien, E. & Rodríguez, J. & Galindo, J. & Barbero, F.J. & Batlles, F.J., 2019. "Simplifying the measurement of high solar irradiance on receivers. Application to solar tower plants," Renewable Energy, Elsevier, vol. 138(C), pages 551-561.
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    Cited by:

    1. Qimei Chen & Yan Wang & Jianhan Zhang & Zhifeng Wang, 2020. "The Knowledge Mapping of Concentrating Solar Power Development Based on Literature Analysis Technology," Energies, MDPI, vol. 13(8), pages 1-15, April.
    2. Yu, Yupu & Hu, Feng & Bai, Fengwu & Wang, Zhifeng, 2022. "On-sun testing of a 1 MWth quartz tube bundle solid particle solar receiver," Renewable Energy, Elsevier, vol. 193(C), pages 383-397.

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