Wind speed information greatly improves risk minimisation in the planning, construction and operation phases of offshore wind farms. When compared with measuring masts, the buoy has one decisive advantage:
The Fraunhofer IWES’ LiDAR wind-measuring buoy was successfully installed near the FINO1 meteorological mast. The buoy measures wind speeds at heights of 40 to 200 m.
Photo: Fraunhofer IWES
It can be employed at any location with no extra installation costs and requires a less time-consuming authorization procedure. This is all made possible by a correction algorithm developed at the Fraunhofer IWES.
A validated technology conquers new terrain: Using LiDAR (“Light Detection And Ranging”) appliances on land and on fixed platforms for measuring wind speeds at heights of 40 to 200 m are a proven process. Proper motion, which falsifies measurement values taken from moving surfaces, has hitherto hindered the reliable employment of LiDAR applications offshore. Within the framework of the project “Offshore Measuring Buoy” – funded by the German Federal Ministry for the Environment – Fraunhofer scientists are now extremely excited about the first North Sea deployment of the gloating LiDAR system. A Windcube LiDAR device made by the company Leosphere has been integrated into the buoy.
Rapid implementation and marked cost reductions through floating LiDAR technology should make it possible for wind farm developers to reduce the actual costs of offshore wind energy. The construction of an authorized measuring mast such as FINO1 requires a double-digit million investment. The data quality of mast and buoy should be comparable.High Data Quality Despite Floating Platform:
Britta Rollert | Fraunhofer-Institut
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