The ?Database on Wind Characteristics? is presently operated as IEA
Wind R&D Annex XVII. The database constitutes a valuable tool for
a consistent and rational calibration of essential wind characteristics
for wind turbine design with application in standardisation work. In
addition, investigations of a more fundamental and phenomenological
character can conveniently be supported by the large selection of full-scale
wind field measurements contained in the database. Although the database,
in its present version, contains a broad spectrum of wind turbine load
relevant wind time series, it was agreed that additional wind data was
needed to complete the data selection. Most important are additional
wake measurements, 3 component offshore measurements suitable for validation
of especially the low frequency part of offshore wind spectra, additional
combined wind- and wave data from representative offshore locations,
extreme complex terrain measurements and long term data sets covering
time spans of at least 20 years.
The partner in the Netherlands is ECN that has provided several data
sets to the database. This report describes four data sets that have
been carefully validated, described and added to the database. The data
are measured in a variety of projects:
- SODAR comparison with 213m high meteorological mast;
- Wind farm development project in Costa Rica;
- NUON Tulipo 5/2.5 turbine testing at ECN test site, using a 12m
high meteorological mast;
- Wind farm development project in Delfzijl.
Specific data of extreme nature measured with the 50m meteorological
mast at the ECN site are described in a separate report. This 50m mast
is used for long-term wind measurements in a coastal environment. In
the appendices, the descriptions of the experimental set-up for each
of the projects are given.