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With several offshore wind farms (OWF) in Europe entering the second half of their design
lifetime, the offshore wind industry is increasing its focus on the period beyond the intended
design life. This study focusses on an alternative to decommissioning beyond the certified
operational period: extension the lifetime of the assets. In this context, the domains of lifecycle engineering and structural health monitoring (SHM) are increasingly gaining attention.
However, to date, there is no consensus in the offshore wind industry on the methodology to
perform such assessments. [1]
The fatigue limit state (FLS) is often the main driver for designing wind turbine generator
(WTG) support structures. Earlier work with real-world SHM data indicated that the
consumed fatigue life is less than expected during design phase. [2]
This poster presents a case study of a data-driven FLS assessment of a specific primary steel
weld based on more than 5 years of real-world SHM and SCADA (Supervisory Control And
Data Acquisition) data. The data-driven methodology is such that there is no need to perform
aero-elastic load simulations. The potential for lifetime extension is identified by assessing
the accumulated fatigue damage for theoretical and modified modelling scenarios.
The study included validation of the some key principles in the data-driven assessment and
the general industry consensus that the as-is environmental and operational conditions (EOC)
are favourable compared to the earlier, theoretical, considerations.
Originele taal-2English
StatusPublished - 24 apr 2023
EvenementWindEurope annual event 2023 - Copenhagen, Copenhagen, Denmark
Duur: 24 apr 202327 apr 2023


ConferenceWindEurope annual event 2023
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