Insights on the use of wind speed vertical extrapolation methods

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Ariana Pintor (Author) FEUP; Pinto, C (Author) Other; Mendonça, J (Author) Other; Pilão, R (Author) Other; Pinto, P (Author) Other

Journal

Title: Renewable Energy and Power Quality Journal

Vol. 20

Pages: 713-718

Publisher: European Association for the Development of Renewable Energies, Environment and Power Quality

Indexing

Scopus

Other information

Authenticus ID: P-00X-2WX

DOI: 10.24084/repqj20.410

Abstract (EN): The present work aims to study the influence of using different methods for wind speed extrapolation in energy production calculations. A dataset of 21 meteorological masts from several landscape characteristics and locations, with at least one year of 10-minute wind speed/direction data, was used as the basis for calculations. Both the power law through estimation of wind shear coefficients, and the logarithmic-based profile using WAsP, were used as mathematical models for predicting wind shear. Wind speed extrapolation was performed either from the top-most height, using a distance method that incorporated all measurement heights, or using the function for wind shear coefficient prediction. It was found that using the logarithmic-based profile was the less reliable of all studied methods. The study showed that the most accurate method was the power law with wind shear coefficients estimated from the two upper heights closest to the extrapolation height, by wind direction sector of 30º, and the wind speeds extrapolation from the top-most height of the two. It is suggested that the use of this method reduces uncertainty in AEP estimates. © 2022, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.

Language: English

Type (Professor's evaluation): Scientific