| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.19 MB | Adobe PDF |
Advisor(s)
Abstract(s)
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 logarithmicbased
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 topmost
height of the two. It is suggested that the use of this method
reduces uncertainty in AEP estimates.
Description
Keywords
Wind shear Power law Logarithmic-based profile Vertical wind speed extrapolation Energy production
Citation
Publisher
EA4EPQ