GB/T 46764-2025 Wind energy generation systems—Availability

Scope

This document specifies an information model that enables the calculation and statistical analysis of the availability of power generation services and the availability of power generation capacity.
This document provides standard measurement methods that enable the creation and organization of availability calculation and evaluation processes according to user needs.
This document provides different information categories and clearly describes how to use data to characterize and classify operational status. The information model specifies category priorities to distinguish possible concurrent categories. Additionally, the model defines admission and exit conditions for assigning time and power generation to appropriate information categories. For a complete description of all information categories, admission conditions, and exit conditions, see Table A.1 in Appendix A.
This document is applicable to single wind turbines, groups of wind turbines, wind farms, and clusters of wind farms. A wind farm is typically a collection of all wind turbines, power generation services, and ancillary facilities located before the grid connection point.
The appendices provide examples to guide the calculation of availability indicators:
— Examples of selecting information categories, see Appendix B;
— Examples of applying information categories to determine availability, see Appendix C;
— Examples of application scenarios, see Appendix D;
— Examples of feasible methods for determining potential power generation, see Appendix E;
— Examples of how to extend the model to auxiliary facilities of wind farms, see Appendix F.
This document does not specify how to calculate availability indicators. It also does not specify methods for obtaining information and evaluating power generation conditions, and does not provide a basis for power curve performance measurement. For power curve measurement, see IEC 61400-

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