IEC 61400-50-2-ed.1.0

Annotation of standard text IEC 61400-50-2-ed.1.0 :

IEC 61400-50-2:2022 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: a. 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; b. the procedures and requirements for calibration of RSDs; c. the assessment of wind speed measurement uncertainty; d. additional checks of the RSD performance and measurement uncertainty during the SMC; e. application of the wind speed uncertainty derived from the RSD calibration and classification to the measurements taken during the SMC (e.g. interpolation of uncertainty or calibration results to different heights); f. requirements for reporting. This first edition of IEC 61400-50-2 is part of a structural revision that cancels and replaces the performance standards IEC 61400-12-1:2017 and IEC 61400-12-2:2013. The structural revision contains no technical changes with respect to IEC 61400-12-1:2017 and IEC 61400-12-2:2013, but the parts that relate to wind measurements, measurement of site calibration and assessment of obstacle and terrain have been extracted into separate standards. IEC 61400-50-2:2022 sapplique specifiquement a lutilisation dinstruments de mesure du vent par teledetection montes au sol, cest-a-dire des dispositifs qui mesurent le vent a un endroit generalement situe au-dessus et eloigne de lendroit dans lequel linstrument est monte (par exemple, sodars, lidars a profil vertical). Le present document exclut specifiquement dautres types de RSD tels que les lidars diriges vers lavant ou les lidars a balayage. Le present document specifie les points suivants: a. la procedure et les exigences de classification des RSD au sol afin devaluer lincertitude liee a la sensibilite de la reponse du RSD aux conditions meteorologiques qui peuvent varier entre le lieu et le moment de letalonnage du RSD et le lieu et le moment du cas dutilisation (SMC – specific measurement campaign, campagne de mesure specifique). b. les procedures et les exigences relatives a letalonnage des RSD. c. levaluation de lincertitude de mesure de la vitesse du vent. d. les controles supplementaires des performances du RSD et de lincertitude de mesure pendant la SMC. e. lapplication de lincertitude de la vitesse du vent derivee de letalonnage et de la classification du RSD aux mesurages effectues pendant la SMC (par exemple, interpolation de lincertitude ou des resultats de letalonnage a differentes hauteurs). f. exigences relatives aux rapports. La presente premiere edition de l’IEC 61400-50-2 fait partie d’une revision structurelle qui annule et remplace les normes de performance IEC 61400-12-1:2017 et IEC 61400-12-2:2013. Cette revision structurelle ne contient aucune modification technique par rapport a lIEC 61400-12-1:2017 et lIEC 61400-12-2:2013. Toutefois, les parties relatives aux mesurages du vent, au mesurage de letalonnage du site et a levaluation des obstacles et du terrain ont ete extraites vers des normes distinctes.