IEC 61400-12-1 : 2.0

WIND ENERGY GENERATION SYSTEMS - PART 12-1: POWER PERFORMANCE MEASUREMENTS OF ELECTRICITY PRODUCING WIND TURBINES

International Electrotechnical Committee

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FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Power performance method overview
6 Preparation for performance test
7 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 site
Annex B (normative) - Assessment of terrain at
        the test site
Annex C (normative) - Site calibration procedure
Annex D (normative) - Evaluation of uncertainty
        in measurement
Annex E (informative) - Theoretical basis for
        determining the uncertainty of measurement
        using the method of bins
Annex F (normative) - Wind tunnel calibration
        procedure for anemometers
Annex G (normative) - Mounting of instruments
        on the meteorological mast
Annex H (normative) - Power performance testing
        of small wind turbines
Annex I (normative) - Classification of cup and
        sonic anemometry
Annex J (normative) - Assessment of cup and sonic
        anemometry
Annex K (normative) - In-situ comparison of
        anemometers
Annex L (normative) - The application of remote
        sensing technology
Annex 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
        procedure
Annex Q (informative) - Definition of the rotor
        equivalent wind speed under consideration
        of wind veer
Annex R (informative) - Uncertainty considerations
        for tests on multiple turbines
Annex S (informative) - Mast flow distortion correction
        for lattice masts
Bibliography

Abstract

Describes 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.