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A mesoscale study of the occurrence and impact of wind farm blockage
  • +3
  • Antonio Segalini,
  • Niklas Sondell,
  • Rolf-Erik Keck,
  • Alexander Raul Meyer Forsting,
  • Søren Juhl Andersen,
  • Stefan Ivanell
Antonio Segalini
Uppsala universitet Institutionen for geovetenskaper

Corresponding Author:[email protected]

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Niklas Sondell
Karlstad Modern Energy AB
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Rolf-Erik Keck
Karlstad Modern Energy AB
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Alexander Raul Meyer Forsting
Danmarks Tekniske Universitet Institut for Vindenergi
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Søren Juhl Andersen
Danmarks Tekniske Universitet Institut for Vindenergi
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Stefan Ivanell
Uppsala universitet Institutionen for geovetenskaper
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Abstract

This study employs mesoscale simulations using the Weather Research and Forecasting model to investigate wind-farm blockage phenomena over a six-month period in the North Atlantic Ocean. The impact of atmospheric stratification and associated gravity waves on blockage effects is assessed, unencumbered by the presence of nearby land. Simulations reveal the formation of gravity waves at specific times, especially evident in vertical velocity at hub height. Blockage analysis shows no stratification effects above a Froude number of 10 and increased blockage below 5. Different turbine layouts yield similar results, emphasizing the Froude number as a key indicator of gravity wave effects on wind farm aerodynamics. This study underscores the negative impact of stratification effects, driven by gravity waves, on wind farm production, reducing efficiency during approximately 10% of operation time.
06 Oct 2024Submitted to Wind Energy
09 Oct 2024Submission Checks Completed
09 Oct 2024Assigned to Editor
09 Oct 2024Review(s) Completed, Editorial Evaluation Pending
13 Oct 2024Reviewer(s) Assigned