Guest Lecture by Prof. Martin Kühn, ForWind and University of Oldenburg, Germany, on wake effects in the German offshore test field »alpha ventus« measured with synchronised long-range lidar windscanners
Seminars at NTNU AMOS in 2014
Guest Lecture by Prof. Martin Kühn, ForWind and University of Oldenburg, Germany, on wake effects in the German offshore test field »alpha ventus« measured with synchronised long-range lidar windscanners
Room T6, Marine Technology Centre
Abstract
The flow conditions in the planned very large offshore wind farms with hundreds of multi-megawatt wind turbines sited in wind farm clusters will differ in various aspects significantly from what is presently known on wake effects of small to medium-scale wind farms. The contribution will provide an overview on the results gathered during the measurement campaign in German offshore test site »alpha ventus« with two scanning long-range lidars on »Fino1« and one scanning lidar on the substation conducted from summer 2013 till spring 2014.
In addition, a brief summary of the research on wind physics at ForWind – Oldenburg and on the development of novel wind farm control concepts will be given.
Figure 1: Two dimensional scan of the wind farm flow at "alpha ventus".
Two azimuthal scans performed with long range lidars based on the substation in »alpha ventus« (marked by green box) and »Fino1« are visualized in the background. The highlighted section shows the horizontal component of the farm flow calculated from the two scans. Wakes of three rows of turbines are clearly visible.