Preprints
https://doi.org/10.5194/wes-2021-32
https://doi.org/10.5194/wes-2021-32

  19 May 2021

19 May 2021

Review status: a revised version of this preprint is currently under review for the journal WES.

Experimental results of wake steering using fixed angles

Paul Fleming1, Michael Sinner1, Tom Young2, Marine Lannic2, Jennifer King1, Eric Simley1, and Bart Doekemeijer1 Paul Fleming et al.
  • 1National Wind Technology Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
  • 2RES Group, Beaufort Court, Egg Farm Lane, Kings Langley, Hertfordshire, WD4 8LR, UK

Abstract. In this article, the authors present a test of wake steering at a commercial wind farm. A single fixed yaw offset, rather than an optimized offset schedule, is alternately applied to an upstream wind turbine and the effect on downstream turbines is analyzed. This experimental design allows for comparison with engineering wake models independent of the controller's ability to track a varying offset and correctly measure wind direction. Additionally, by applying the same offset in beneficial and detrimental conditions, we are able to collect important data for assessing second-order wake model predictions. Results of the article from collected data show good agreement with the FLOw Redirection and Induction in Steady State (FLORIS) engineering model and offer support for the asymmetry of wake steering predicted by newer models, such as the Gauss-curl hybrid model.

Paul Fleming et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Review of “Experimental results of wake steering using fixed angles” by Fleming et al. (wes-2021-32)', Anonymous Referee #1, 28 Jun 2021
  • RC2: 'Comment on wes-2021-32', Maarten van den Broek, 10 Jul 2021
  • AC1: 'Comment on wes-2021-32', Paul Fleming, 23 Jul 2021

Paul Fleming et al.

Paul Fleming et al.

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Short summary
The paper presents a new validation campaign of wake steering at a commercial wind farm. The campaign uses fixed yaw offset positions, rather than a table of optimal yaw offsets dependent on wind direction, to enable comparison with engineering models of wake steering. Additionally, by applying the same offset in beneficial and detrimental conditions, we are able to collect important data for assessing second-order wake model predictions.