FOREWORD
INTRODUCTION
1 General
1.1 Scope
1.2 Normative references
1.3 Definitions
1.4 Symbols and units
1.5 Abbreviations
2 Test conditions
2.1 Wind turbine generator system
2.2 Test site
3 Test equipment
3.1 Electric power
3.2 Wind speed
3.3 Wind direction
3.4 Air density
3.5 Precipitation
3.6 Wind turbine generator system status
3.7 Data acquisition system
4 Measurement procedure
4.1 Introduction
4.2 Wind turbine generator system operation
4.3 Data collection
4.4 Data selection
4.5 Data correction
4.6 Database
5 Derived results
5.1 Data normalization
5.2 Determination of measured power curve
5.3 Annual energy production (AEP)
5.4 Power coefficient
6 Reporting format
Tables
1 Example of presentation of a measured power curve
2 Example of presentation of estimated annual energy production
Figures
1 Requirements as to distance of the meteorological mast
and maximum allowed measurement sectors
2 Presentation of example data: power performance test
scatter plots
3 Presentation of example measured power curve
Annexes
A Assessment of test site
B Calibration of test site
C Evaluation of uncertainty in measurement
D Theoretical basis for determining the uncertainty of
measurement using the method of bins
E Bibliography