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Wind energy generation systems - Part 12-1: Power performance measurements of electricity producing wind turbines
Amended by: IEC 61400-12-1:2017/COR2:2020
Available format(s): Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users
Superseded date: 05-09-2022
Language(s): English - French, Spanish, Castilian
Published date: 03-03-2017
Publisher: International Electrotechnical Committee
FOREWORDINTRODUCTION1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and units5 Power performance method overview 6 Preparation for performance test7 Test equipment 8 Measurement procedure 9 Derived results 10 Reporting format Annex A (normative) - Assessment of influences caused by wind turbines and obstacles at the test siteAnnex B (normative) - Assessment of terrain at the test site Annex C (normative) - Site calibration procedureAnnex D (normative) - Evaluation of uncertainty in measurementAnnex E (informative) - Theoretical basis for determining the uncertainty of measurement using the method of binsAnnex F (normative) - Wind tunnel calibration procedure for anemometers Annex G (normative) - Mounting of instruments on the meteorological mastAnnex H (normative) - Power performance testing of small wind turbinesAnnex I (normative) - Classification of cup and sonic anemometryAnnex J (normative) - Assessment of cup and sonic anemometryAnnex K (normative) - In-situ comparison of anemometersAnnex L (normative) - The application of remote sensing technologyAnnex M (informative) - Normalisation of power curve data according to the turbulence intensity Annex N (informative) - Wind tunnel calibration procedure for wind direction sensors Annex O (informative) - Power performance testing in cold climate Annex P (informative) - Wind shear normalisation procedureAnnex Q (informative) - Definition of the rotor equivalent wind speed under consideration of wind veer Annex R (informative) - Uncertainty considerations for tests on multiple turbinesAnnex S (informative) - Mast flow distortion correction for lattice mastsBibliography
IEC 61400-12-1:2017 is also available as IEC 61400-12-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61400-12-1:2017 specifies a procedure for measuring the power performance characteristics of a single wind turbine and applies to the testing of wind turbines of all types and sizes connected to the electrical power network. In addition, this standard describes a procedure to be used to determine the power performance characteristics of small wind turbines (as defined in IEC 61400-2) when connected to either the electric power network or a battery bank. The procedure can be used for performance evaluation of specific wind turbines at specific locations, but equally the methodology can be used to make generic comparisons between different wind turbine models or different wind turbine settings when site-specific conditions and data filtering influences are taken into account. This new edition includes the following significant technical changes with respect to the previous edition: new definition of wind speed, inclusion of wind shear and wind veer, revision of air density correction, revision of site calibration, revision to definition of power curve, interpolation to bin centre method, revision of obstacle model, etc.Key words: Wind turbines, Wind energy, renewable energy, performance, efficiencyThe contents of the corrigendum 1 of September 2019, corrigendum 2 of March 2020 and corrigendum 3 of May 2021 have been included in this copy.
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