Lead Session Chair:
Stephan Barth, Managing Director, ForWind - Center for Wind Energy Research, Germany
Friederike Begue (3) F P Tina Leiding (2) Thomas Neumann (3) Birger Tinz (2)
(1) DEWI-GmbH, Wilhelmshaven, Germany (2) DWD, Hamburg, Germany (3) DEWI GmbH, Wilhelmshaven, Germany (4) Fraunhofer-Institut für Windenergie und Energiesystemtechnik IWES, Bremerhaven, Germany (5) Fraunhofer-Institut für Windenergie und Energiesystemtechnik IWES, Bremerhaven, Germany (6) DNV GL - Energy, Hamburg, Germany (7) DNV GL - Energy, Hamburg, Germany (8) WIND-consult GmbH, Bargeshagen, Germany (9) WIND-consult GmbH, Bargeshagen, Germany (10) Bundesamt fuer Seeschifffahrt und Hydrographie (BSH), Hamburg, Germany (11) Bundesamt fuer Seeschifffahrt und Hydrographie (BSH), Hamburg, Germany (12) Deutscher Wetterdienst, Hamburg, Germany (13) Deutscher Wetterdienst, Hamburg, Germany
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Standardization of meteorological data from offshore platforms
In order to investigate conditions for offshore wind power generation in the German coastal areas, three research platforms were constructed in the North Sea (FINO1 and 3) and the Baltic Sea (FINO2). Measurement masts at each platform are equipped with a range of meteorological sensors at heights of 30 to 100 m above sea level.
Standardized analysis and interpretation of the data is necessary to compare the results of the different platforms and will improve the knowledge of the marine ambient conditions at the three locations.
Standards given in the IEC can only be partly applied as some requirements are not applicable to offshore masts e.g. due to the wake of the structure.
In the FINO-Wind project, therefore, a standardization method is developed. Recorded measurement data are checked automatically on the basis of a comprehensive checking routine. The quality control of the data is performed in a sequence of tests: The routine starts with a formal check, followed by climatological, temporal, repetition, and consistency checks. After successful completion of each sequence, the data are assigned standardized quality flags. By default, 10-minute averages of data are processed.
Main body of abstract
With the focus on wind data mast effects of all three masts, which are either square or triangular shaped and have different boom constellations, are intensively investigated by comparison with LiDAR, CFD calculations, the UAM-method and wind tunnel measurements. As a result of an overall evaluation of these analyses a correction for wind measurements of each mast shall be derived.
Wake field situation for all three masts from existing and planned wind farms in the surrounding shall also be captured.
The analysis and comparison of sensor equipment, their installation and orientation as well as of the mast constructions shall lead to suggestions on how wind measurements with offshore met mast can be enhanced.
The project aims to provide an improved comparison of meteorological data from all three FINO platforms as well as consistent data storage.
The research project is funded under the 'Wind Energy' initiative of the German Federal Ministry for the Economic Affairs and Energy and project management Projektträger Jülich for the period 2013 to 2015. The project leader is the German Meteorological Service (DWD) with the collaboration of the Federal Maritime and Hydrographic Agency (BSH), DEWI GmbH, Fraunhofer IWES, DNV GL, and Wind-consult GmbH.