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IEC 61400-12-6-ed.1.0
Wind energy generation systems - Part 12-6: Measurement based nacelle transfer function of electricity producing wind turbines
Translate name
STANDARD published on 30.8.2022
The information about the standard:
Designation standards: IEC 61400-12-6-ed.1.0
Publication date standards: 30.8.2022
SKU: NS-1071438
The number of pages: 114
Approximate weight : 373 g (0.82 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Wind turbine systems and other alternative sources of energy
Annotation of standard text IEC 61400-12-6-ed.1.0 :
IEC 61400-12-6:2022 specifies a procedure for measuring the nacelle transfer function of a single electricity-producing, horizontal axis wind turbine, which is not considered to be a small wind turbine in accordance with IEC 61400-2. It is expected that this document be used when a valid nacelle transfer function is needed to execute a power performance measurement according to IEC 61400-12-2. This document specifies how to characterise a wind turbines nacelle transfer function. The nacelle transfer function is determined by collecting simultaneous measurements of nacelle-measured wind speed and free stream wind speed (as measured on a meteorological mast) for a period that is long enough to establish a statistically significant database over a range of wind speeds and under varying wind and atmospheric conditions. The procedure also provides guidance on determination of measurement uncertainty including assessment of uncertainty sources and recommendations for combining them. This first edition of IEC 61400-12-6 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 61400-12-6:2022 specifie une procedure de mesure de la fonction de transfert de la nacelle d’une eolienne simple de production d’electricite a axe horizontal, qui n’est pas consideree comme un petit aerogenerateur selon l’IEC 61400-2. Il est attendu que le present document soit utilise lorsqu’il est necessaire demployer une fonction de transfert de la nacelle valide pour mesurer la performance de puissance conformement a l’IEC 61400-12-2. Le present document decrit la facon de determiner la fonction de transfert de la nacelle d’une eolienne. La fonction de transfert de la nacelle est determinee en collectant simultanement des valeurs de mesure de la vitesse du vent mesuree a la nacelle et de la vitesse du vent en ecoulement libre (mesuree sur un mat meteorologique) pendant une periode suffisamment longue pour creer une base de donnees statistiquement significative sur une certaine plage de vitesses du vent et dans des conditions de vent et des conditions atmospheriques variables. Cette procedure fournit egalement des recommandations relatives a la determination de l’incertitude de mesure, incluant l’evaluation des sources d’incertitude et des recommandations qui permettent de les combiner. La presente premiere edition de l’IEC 61400-12-6 fait partie dune 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.
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