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Insight into the impact of turbine-array configurations on the power output and wake effects of a finite-size wind farm

Author

Listed:
  • Wang, Yan
  • Lu, Pan
  • Zhou, Yongze
  • Guan, Ronghu
  • Li, Rennian

Abstract

Large eddy simulation (LES) is adopted to investigate the turbine-array layout on flow field characteristics, power output and wake effects of a finite-size wind farm. Consider 40 turbines installed in 10 rows, with aligned (AL), lateral staggered (LS) and vertical staggered (VS) configurations. A 260D-length computational domain is used to evaluate the wake effects of wind farm. Results showed that both LS and VS wind farm configurations can significantly reduce turbulence-induced instability and improve power generation compared to the AL wind farm configuration, however, their wake effects show different scenarios. The LS configuration can reduce turbulence intensity inside the wind farm by 14.3% and improve power generation by 40%, but prolongs the wake effects to about 17 km downwind of the wind farm. For the VS configuration, a larger relative hub height difference between the front and back turbines improves power generation (up to 16%) and reduces turbulence intensity (up to 5.7%) inside the wind farm. Most importantly, it also significantly reduces the persistence of wake effects, by up to 4 km compared to the LS configuration. Furthermore, employing a 7-row turbine array is recommended to effectively optimize the balance between power generation and turbulence intensity in VS configurations.

Suggested Citation

  • Wang, Yan & Lu, Pan & Zhou, Yongze & Guan, Ronghu & Li, Rennian, 2025. "Insight into the impact of turbine-array configurations on the power output and wake effects of a finite-size wind farm," Renewable Energy, Elsevier, vol. 255(C).
    • Handle: RePEc:eee:renene:v:255:y:2025:i:c:s0960148125014077
    DOI: 10.1016/j.renene.2025.123745
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