Lidar measurements validation under coastal condition

Pedro Alvim A. Santos, Yoshiaki Sakagami, Reinaldo Haas, Júlio C. Passos, Frederico F. Taves


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Base Information

Volume

V48 - N3 / 2015 Ordinario

Reference

193-198

DOI

http://dx.doi.org/10.7149/OPA.48.3.193

Language

English / Inglés

Keywords

Wind Energy, Wind lidar, Validation, Bias analysis.

Abstract

This study aims to validate measurements of a wind Doppler Lidar profiler installed in a wind farm at the Brazilian coastline. An experimental setup was deployed in Pedra do Sal site, located inside a 18MW wind farm at the northeast coast of Brazil. The objective is to use wind data from a 100m meteorological tower as reference and correlate wind profile lidar data to analyze deviations and site-specific effects. The measurement campaign covered a one-year period. Results show a good correlation between lidar and tower, with a correlation of R2=0.97. However, there is a non-linear behavior of the bias along the wind speed range. The calculated bias for the four analyzed levels is confirmed with a negative skewness and high kurtosis. In conclusion, the studied lidar profiler presented a good correlation with the reference data, but with significant deviations for wind energy applications. The source of the observed bias behavior is still to be better understood.

References

0

IEA, Ground-based vertically profiling remote sensing for wind resource assessment, International Energy Agency, 2013.

1

A. Albers and A.W. Janssen, Evaluation of Windcube, Deutsche WindGuard Consulting GmbH, 2008.

2

CRES, Test Report 546-01B: Operation of the Windcube V2 lidar at CRES Test Station, Centre for Renewable Energy Sources and Saving, 2011.

3

J. Gottschall and M. Courtney, Verification test for three WindCubeTM WLS7 LiDARs at the H0vsore test site, RISO National Laboratory for Sustainable Energy, 2007.

4

B. Cañadillas, A. Westerhellweg, and T. Neumann, "Testing the Performance of a Ground-Based Wind LiDAR System: One year intercomparison at the Offshore Platform FINO1," DEWI Magazin, vol. 38, Feb. 2011, pp. 58-64.

5

Y. Sakagami, P.A.A. Santos, R. Haas, J.C. Passos, and F.F. Taves, "Wind shear assessment using wind LiDAR profiler and sonic 3D for wind energy applications - Preliminary Results," Proceedings of World Renewable Energy CongressXIII, London: 2013.