1. Validated extrapolation of measured damage within an offshore wind farm using instrumented fleet leaders
- Author
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Nymfa Noppe, Christof Devriendt, Clemens Hübler, and Wout Weijtjens
- Subjects
History ,Damage detection ,Lifetime assessment ,Extrapolation ,Electric utilities ,Education ,Wind farm ,Miner's rule ,Offshore oil well production ,ddc:530 ,Rainflow-counting algorithm ,Konferenzschrift ,Fatigue assessments ,Computer Science Applications ,Lifetime extension ,Offshore wind power ,Torque ,Rainflow counting ,Offshore wind farms ,Relative errors ,Environmental science ,Specific sensors ,Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik ,Fatigue of materials ,Marine engineering - Abstract
As the older wind farms are slowly reaching their design lifetime, topics like fatigue and lifetime assessment gain importance. To decide on a possible lifetime extension of the turbine and its foundation, an accurate fatigue assessment for every wind turbine in the farm is needed. As the installation of specific sensors needed for a fatigue assessment is too time consuming and costly, the “Fleet Leader Concept” is applied and validated in this paper. Here, a few turbines are instrumented and a fatigue assessment based on rainflow counting and Miner’s rule can be performed. For a farm-wide fatigue assessment, the obtained damage is extrapolated towards the other turbines. Sample based bootstrapping is performed to introduce an uncertainty on the results. A successful extrapolation was obtained for in-field measurements at an older offshore wind farm. In general, relative errors of less than 5% on damage were found.
- Published
- 2020