Does the wind turbine wake follow the topography? A multi-lidar study in complex terrain

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Abstract

The wake of a single wind turbine in complex terrain is analysed using measurements from lidars. A particular focus of this analysis is the wake deficit and propagation. Six scanning lidars (three short-range and three long-range WindScanners) were deployed during the Perdigão 2015 measurement campaign, which took place at a double-ridge site in Portugal. Several scanning scenarios, including triple- and dual-Doppler scans, were designed to capture the wind turbine wake of a 2MW turbine located on one of the ridges. Different wake displacements are categorized according to the time of the day. The results show a strong dependence of the vertical wake propagation on the atmospheric stability. When an atmospheric wave is observed under stable conditions, the wake follows the terrain down the ridge with a maximum inclination of −28°. During unstable conditions, the wake is advected upwards by up to 29° above the horizontal plane.
Original languageEnglish
JournalWind Energy Science
Volume3
Issue number2
Pages (from-to)681-691
ISSN2366-7443
DOIs
Publication statusPublished - 2018

Cite this

@article{f6dc41fd437f4b7da7e738d102b50bef,
title = "Does the wind turbine wake follow the topography? A multi-lidar study in complex terrain",
abstract = "The wake of a single wind turbine in complex terrain is analysed using measurements from lidars. A particular focus of this analysis is the wake deficit and propagation. Six scanning lidars (three short-range and three long-range WindScanners) were deployed during the Perdig{\~a}o 2015 measurement campaign, which took place at a double-ridge site in Portugal. Several scanning scenarios, including triple- and dual-Doppler scans, were designed to capture the wind turbine wake of a 2MW turbine located on one of the ridges. Different wake displacements are categorized according to the time of the day. The results show a strong dependence of the vertical wake propagation on the atmospheric stability. When an atmospheric wave is observed under stable conditions, the wake follows the terrain down the ridge with a maximum inclination of −28°. During unstable conditions, the wake is advected upwards by up to 29° above the horizontal plane.",
author = "Robert Menke and Nikola Vasiljević and Hansen, {Kurt Schaldemose} and Hahmann, {Andrea N.} and Jakob Mann",
year = "2018",
doi = "10.5194/wes-3-681-2018",
language = "English",
volume = "3",
pages = "681--691",
journal = "Wind Energy Science",
issn = "2366-7443",
publisher = "Copernicus GmbH",
number = "2",

}

TY - JOUR

T1 - Does the wind turbine wake follow the topography? A multi-lidar study in complex terrain

AU - Menke, Robert

AU - Vasiljević, Nikola

AU - Hansen, Kurt Schaldemose

AU - Hahmann, Andrea N.

AU - Mann, Jakob

PY - 2018

Y1 - 2018

N2 - The wake of a single wind turbine in complex terrain is analysed using measurements from lidars. A particular focus of this analysis is the wake deficit and propagation. Six scanning lidars (three short-range and three long-range WindScanners) were deployed during the Perdigão 2015 measurement campaign, which took place at a double-ridge site in Portugal. Several scanning scenarios, including triple- and dual-Doppler scans, were designed to capture the wind turbine wake of a 2MW turbine located on one of the ridges. Different wake displacements are categorized according to the time of the day. The results show a strong dependence of the vertical wake propagation on the atmospheric stability. When an atmospheric wave is observed under stable conditions, the wake follows the terrain down the ridge with a maximum inclination of −28°. During unstable conditions, the wake is advected upwards by up to 29° above the horizontal plane.

AB - The wake of a single wind turbine in complex terrain is analysed using measurements from lidars. A particular focus of this analysis is the wake deficit and propagation. Six scanning lidars (three short-range and three long-range WindScanners) were deployed during the Perdigão 2015 measurement campaign, which took place at a double-ridge site in Portugal. Several scanning scenarios, including triple- and dual-Doppler scans, were designed to capture the wind turbine wake of a 2MW turbine located on one of the ridges. Different wake displacements are categorized according to the time of the day. The results show a strong dependence of the vertical wake propagation on the atmospheric stability. When an atmospheric wave is observed under stable conditions, the wake follows the terrain down the ridge with a maximum inclination of −28°. During unstable conditions, the wake is advected upwards by up to 29° above the horizontal plane.

U2 - 10.5194/wes-3-681-2018

DO - 10.5194/wes-3-681-2018

M3 - Journal article

VL - 3

SP - 681

EP - 691

JO - Wind Energy Science

JF - Wind Energy Science

SN - 2366-7443

IS - 2

ER -