Print Email Facebook Twitter Fault Detection of the Mooring system in Floating Offshore Wind Turbines based on the Wave-excited Linear Model Title Fault Detection of the Mooring system in Floating Offshore Wind Turbines based on the Wave-excited Linear Model Author Liu, Y. (TU Delft Team Jan-Willem van Wingerden) Fontanella, A. (Politecnico di Milano) Wu, P. (Zhejiang Sci-Tech University) Ferrari, Riccardo M.G. (TU Delft Team Jan-Willem van Wingerden) van Wingerden, J.W. (TU Delft Team Jan-Willem van Wingerden) Date 2020 Abstract Floating Offshore Wind Turbines (FOWTs) are more prone to suffer from faults and failures than bottom-fixed counterparts due to the severe wind and wave loads typical of deep water sites. In particular, mooring line faults may lead to unacceptably high operation and maintenance costs due to the limited accessibility of FOWTs. Detecting the mooring line faults is therefore critical, but the application of Fault Detection (FD) techniques has not been investigated yet. In this paper, an FD scheme based on a wave-excited linear model is developed to detect in a reliable way critical mooring line faults occurring at the fairlead and anchor ends. To reach the goal, a linear model of the FOWT is obtained by approximating the wave radiation and incident wave forces. Based on this model, an observer is built to predict the rigid rotor and platform dynamics. The FD scheme is thus implemented by comparing the Mahalanobis Distance of the observer prediction error against a probabilistic detection threshold. Numerical simulations in some selected fault scenarios show that the wave-excited linear model can predict the FOWT dynamics with good accuracy. Based on this, the FD scheme capabilities are demonstrated, showing that it is able to effectively detect two critical mooring line faults. To reference this document use: http://resolver.tudelft.nl/uuid:efe2211e-f03a-43f3-9ed7-8211824e4e2f DOI https://doi.org/10.1088/1742-6596/1618/2/022049 ISSN 1742-6588 Source Journal of Physics: Conference Series, 1618 (2) Event Science of Making Torque from Wind 2020, TORQUE 2020, 2020-09-28 → 2020-10-02, Online, Virtual, Online, Netherlands Part of collection Institutional Repository Document type journal article Rights © 2020 Y. Liu, A. Fontanella, P. Wu, Riccardo M.G. Ferrari, J.W. van Wingerden Files PDF Liu_2020_J._Phys._Conf._S ... 022049.pdf 3.95 MB Close viewer /islandora/object/uuid:efe2211e-f03a-43f3-9ed7-8211824e4e2f/datastream/OBJ/view