1 Scope
IEC 61400‑50 specifies methods and requirements for the application of instruments to measure
wind speed (and related parameters, e.g. wind direction and turbulence intensity).
Such measurements are required as an input to some of the evaluation and testing procedures
for wind energy and wind turbine technology (e.g. resource evaluation and turbine
testing) described by other standards in the IEC 61400 series . This document is applicable specifically to the use of ground-mounted remote sensing
wind measurement instruments, i.e. devices which measure the wind at some location
generally above and distant from the location at which the instrument is mounted (e.g.
sodars, vertical profiling lidars). This document specifically excludes other types
of RSD such as forward facing or scanning lidars. This document specifies the following:
the procedure and requirements for classifying ground-based RSDs in order to assess
the uncertainty pertaining from sensitivity of the RSD response to meteorological
conditions that can vary between the RSD calibration place and time and the use case
(specific measurement campaign – SMC) place and time;
the procedures and requirements for calibration of RSDs;
...