Layout and yaw optimisation of an offshore wind farm through analytical modelling

In this work, a computational tool for analytical large scale modelling of offshore wind farms is presented. Using Horns Rev 1 as a reference baseline, an optimal layout and yaw angle setting for one wind direction based on aerodynamic considerations is proposed. Based on a wake model presented by Q...

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Bibliographic Details
Published in:Journal of physics. Conference series 2023-10, Vol.2626 (1), p.12058
Main Authors: Sukhman, D, Lück, S, Göing, J, Bartl, J, Hansen, T, Stenfelt, G, Friedrichs, J
Format: Article
Language:English
Subjects:
Aerodynamics
Flow velocity
Layouts
Offshore
Offshore energy sources
Optimization
Physics
Software
Turbulence intensity
Turbulent flow
Wind direction
Wind power
Wind turbines
Yaw
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Summary:In this work, a computational tool for analytical large scale modelling of offshore wind farms is presented. Using Horns Rev 1 as a reference baseline, an optimal layout and yaw angle setting for one wind direction based on aerodynamic considerations is proposed. Based on a wake model presented by Qian & Ishihara, flow velocities as well as turbulence intensities are predicted when several wake flows are superimposed. Subsequently, the aerodynamic performance of the wind turbines is calculated. The proposed tool shows good agreement with measurement and LES data. The influence of performance-driving parameters, namely turbine spacing, ambient turbulence intensity and yaw angle are investigated. The axial spacing and ambient turbulence are identified as the most significant factors. Based on these results, the proposed optimal layout solution suggests a higher power yield of up to 57 %, while the optimal yaw angles found in this work show a power increase of over 6% compared to the baseline layout.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2626/1/012058