New measurements in Perdigao make the wind atlas more accurate

Tuesday 30 May 17

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Jakob Mann
DTU Wind Energy
+4546 77 50 19
Four WindScanners measure the movements of the wind simultaneously in Portuguese Perdigao. That is new.

Shallow areas of land for wind farms will soon be in short supply. Consequently, researchers will be looking for alternative locations for the wind turbines. This development requires new measurements showing the movements of the wind. Such measurements are carried out in Perdigao in Portugal in the cross-European project NEWA, directed by DTU Wind Energy in cooperation with colleagues from the USA.

Four WindScanners are measuring the movements of the wind simultaneously in Portuguese Perdigao, as shown at the illustration. Previously measurements were carried out in flat terrain with only a few WindScanners. Now is the time to focus at areas with hills and forests. This demands a larger number of WindScanners. These WindScanners are placed in a hilly terrain in order to get a more exact picture of the wind in the landscape. As a new feature the WindScanners are delivering even the finest details of the movements of the wind.

“Many WindScanners measuring synchronously is exceptional”, Professor Jakob Mann from DTU Wind Energy explains. “We are collecting a lot of data with the new measurements, showing how the wind is blowing in a complex terrain”, he says.

Hills in the landscape create waves in the atmosphere which influence the wind resources. The new information from the measurements may be used for improvements of the models for the movements of the wind in a complex terrain. And the models are assisting the owners of the wind farms – calculating the risks of quiet periods with no wind.
“With these models it will be easier to find the best places for the wind farms of the future”, Jakob Mann concludes.