Journal article
Does the wind turbine wake follow the topography? A multi-lidar study in complex terrain
Department of Wind Energy, Technical University of Denmark1
Meteorology & Remote Sensing, Department of Wind Energy, Technical University of Denmark2
Fluid Mechanics, Department of Wind Energy, Technical University of Denmark3
Resource Assessment Modelling, Department of Wind Energy, Technical University of Denmark4
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.
| Language: | English |
|---|---|
| Publisher: | Copernicus Publications |
| Year: | 2018 |
| Pages: | 681-691 |
| ISSN: | 23667451 and 23667443 |
| Types: | Journal article |
| DOI: | 10.5194/wes-3-681-2018 |
| ORCIDs: | Menke, Robert , Vasiljević, Nikola , Hansen, Kurt Schaldemose , Hahmann, Andrea N. and Mann, Jakob |
