BS PD IEC/TS 61400-26-3:2016

BS PD IEC/TS 61400-26-3:2016, which is a technical specification, provides a framework from whichtime-based and production-based availability indicators of a wind power station can bederived. It unambiguously describes how data is categorised and provides examples of howthe data can be used to derive availability indicators.The approach is to apply the terms and definitions for the applied information modelsintroduced in IEC TS 61400-26-1 and IEC TS 61400-26-2 to a wind power station.The basic approach is based on the assumption that a wind power station may be modelledas one 'WTGS' representing a complete wind power station. The wind power station is madeup of all WTGSs, functional services and balance of plant elements as seen from the point ofcommon coupling.It is not the intention of this specification to define how time-based and production-basedavailability shall be calculated. Nor is it the intention to form the basis for power curveperformance measurements - which is the objective of IEC 61400-12. However, the annexesshould be regarded as examples and guidelines for developing methods for calculation ofavailability indicators.This document also includes informative annexes with:

• examples of how to expand the model to more services,
• examples of how to determine the information category for the wind power station,
• examples of how to expand the model to balance of plant elements,
• examples of determination of lost production,
• examples of availability algorithms for production based indicators,
• examples of other availability indicators,
• examples of application scenarios.

Cross References:IEC 60050IEC 60050-415IEC TS 61400-26-1:2011IEC TS 61400-26-2:2014IEC 61400-1IEC 61400-12-1:2005IEC 61400-12-2:2013 IEC 61400-25-1:2006IEC 61400-25-2:2015IEC 61400-25-3:2015IEC 61400-25-4:2008IEC 61400-25-5:2006IEC 61400-25-6:2010ISO 3977-9:1999IEEE 762-2006