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Loads and fatigue characteristics assessment of wind farm based on dynamic wake meandering model

Author

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  • Ye, Shitong
  • Wang, Qiang
  • Mu, Yanfei
  • Luo, Kun
  • Fan, Jianren

Abstract

As the scale of wind farms continues to expand, the impact of the wake on the power generation and load of wind turbines is becoming increasingly prominent. This study delves into the wake characteristics, power generation, load, and fatigue behavior of an ideal layout wind farm using a dynamic wake meandering model, accounting for diverse spacing configurations, inflow conditions, and yaw angles. The findings reveal that increasing the axial spacing facilitates superior wake recovery, promoting a more evenly distributed load and reducing fatigue damage throughout the wind farm. Moreover, higher inflow wind speed or turbulence intensity exacerbates fatigue damage, especially at elevated wind, where the damage accumulates exponentially. Under yaw conditions, the wake deviates, reducing its adverse impact on downstream turbines and subsequently boosting the overall power generation of the wind farm. However, this deflection simultaneously introduces intricate and detrimental effects on the fatigue load. Notably, optimal yaw achieves a 7.9 % improvement in power generation, also resulting in the most significant fatigue damage at the blade root and tower base. This study provides theoretical and technical underpinnings for the layout optimization and control strategies of wind farms or wind farm clusters.

Suggested Citation

  • Ye, Shitong & Wang, Qiang & Mu, Yanfei & Luo, Kun & Fan, Jianren, 2024. "Loads and fatigue characteristics assessment of wind farm based on dynamic wake meandering model," Renewable Energy, Elsevier, vol. 236(C).
  • Handle: RePEc:eee:renene:v:236:y:2024:i:c:s0960148124014873
    DOI: 10.1016/j.renene.2024.121419
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