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Continuous dynamic monitoring of an offshore wind turbine on a monopile foundation
Devriendt, C.; El Kafafy, M.; De Sitter, G.; Jordaens, P.J.; Guillaume, P. (2012). Continuous dynamic monitoring of an offshore wind turbine on a monopile foundation, in: Proceedings of ISMA2012-USD2012. pp. 4303-4318
In: (2012). Proceedings of ISMA2012-USD2012. KU Leuven: Belgium. , meer
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Documenttype: Congresbijdrage
Trefwoord
    Marien/Kust
Auteurs  Top 
  • Devriendt, C., meer
  • El Kafafy, M., meer
  • De Sitter, G., meer
  • Jordaens, P.J., meer
  • Guillaume, P., meer
Abstract
    In order to minimize O&M costs and to extend the lifetime of offshore wind turbines it will be of high interest to continuously monitor the vibration levels and the evolution of the frequencies and damping ratios of the first modes of the foundation structure. This will allow us to identify and avoid resonant behavior and will also be able to give indications about the current state of the offshore wind turbine. State-of-the-art operational modal analysis techniques can provide accurate estimates of natural frequencies, damping ratios and mode shapes. To allow a proper continuous monitoring during operations a fast and reliable solution, which is applicable on industrial scale, needs to be developed. The methods need also to be automated and their reliability improved, so that no human-interaction is required and the system can track changes in the dynamic behavior of the offshore wind turbine. This paper will present and discuss the approach that will be used for the long-term monitoring campaign on an offshore wind turbine in the Belgian North Sea.
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