96161 20210902121853.0 doi 10.1088/1742-6596/1618/2/022037 sideral 120724 ART-2020-120724 eng Lázaro, R. Determining Remaining Lifetime of Wind Turbine Gearbox Using a Health Status Indicator Signal 2020 Access copy available to the general public Unrestricted Wind turbine component's failure prognosis allows wind farm owners to apply predictive maintenance techniques to their fleets. This permits optimal scheduling of the maintenance actions considering the best time to stop the turbines and perform those actions. Determining the health status of a turbine's component typically requires verifying a wide number of variables that should be monitored simultaneously. The scope of this study is the investigation and the selection of an effective combination of variables and smoothing and forecasting methodologies for obtaining a wind turbine gearbox health status indicator, in order to interpret clearly the remaining lifetime of the gearbox. The proposed methodology is based on Gaussian Mixture Copula Model (GMCM) models combined with the smoothing treatment and the forecasting model to define the health index of the wind turbine gearbox. Then, the resulting index is tested using various warning and critical thresholds. These thresholds should be chosen adequately in order to indicate appropriate inspection visit and preventive maintenance intervention date. Then, the best combination found, for the studied cases, was 50% and 70% for warning and critical respectively. This combination ensures that the developed procedure is capable of providing long enough time window for maintenance decision making. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.21 2020 Physics and Astronomy (miscellaneous) 2020 Q4 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Yildirim Yürüen, N. (orcid)0000-0002-1206-9756 Melero, J.J. Universidad de Zaragoza (orcid)0000-0003-2360-0845 5009 535 Universidad de Zaragoza Dpto. Ingeniería Eléctrica Área Ingeniería Eléctrica 1618, 2 (2020), 022037 [11 pp] J. Phys.: Conf. Ser. Journal of Physics: Conference Series 1742-6588 535846 http://zaguan.unizar.es/record/96161/files/texto_completo.pdf Versión publicada 75893 http://zaguan.unizar.es/record/96161/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:96161 articulos driver 2021-09-02-10:31:08 ARTICLE