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Study on Atmospheric Stability and Wake Attenuation Constant of Large Offshore Wind Farm in Yellow Sea

Author

Listed:
  • Hao Liu

    (CSSC Windpower Development Co., Ltd., Beijing 100097, China)

  • Jixing Chen

    (Department of Electrical Engineering, School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 100096, China)

  • Jing Zhang

    (Beijing RETEC New Energy Technology Co., Ltd., Beijing 100079, China)

  • Yining Chen

    (Department of Atmospheric Science, School of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing 210044, China)

  • Yafeng Wen

    (Department of Electrical Engineering, School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 100096, China)

  • Xiaoyang Zhang

    (CSSC Windpower Development Co., Ltd., Beijing 100097, China)

  • Zhongjie Yan

    (CSSC Windpower Development Co., Ltd., Beijing 100097, China)

  • Qingan Li

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China)

Abstract

Power generation estimation is one of the key steps in wind farm micro-sitting, and its accuracy is related to the wake decay constant in the wake model. Considering the influence of wind resource distribution in different regions, this study carried out interval optimization for the wake decay constant of offshore wind farms in the Yellow Sea region of China. Given the very small length of the sea surface roughness, atmospheric stability is a critical factor influencing the wake extent and recovery speed of offshore wind farms. WAsP 10 (Wind Atlas Analysis and Application software) simulates the wake of various scenarios, and the selection range of wake attenuation constant is investigated by combining the cases of two offshore wind farms in the Yellow Sea region. The study found that the higher the atmospheric stability, the larger the wake and the lower the wake attenuation coefficient. The Yellow Sea wind farm’s wake error system is between 0.03 and 0.04, and the forecast error can be controlled to within 3%. When simulating the wind farm at Yellow Sea offshore for improving power generation and economic evaluation, it is critical to select the correct value range of wake decay constant.

Suggested Citation

  • Hao Liu & Jixing Chen & Jing Zhang & Yining Chen & Yafeng Wen & Xiaoyang Zhang & Zhongjie Yan & Qingan Li, 2023. "Study on Atmospheric Stability and Wake Attenuation Constant of Large Offshore Wind Farm in Yellow Sea," Energies, MDPI, vol. 16(5), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:5:p:2227-:d:1080173
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    References listed on IDEAS

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