Dynamic monitoring system for utility-scale wind turbines: damage detection and fatigue assessment
- 213 Downloads
Wind turbines are designed to last about 20 years. However, information regarding the actual structural condition of the wind turbine throughout this period is very limited or even null. This situation prevents the exploitation of the full potential of the support structure of the turbine, including the extension of its period of life. This paper presents an overview of a dynamic monitoring system developed to monitor the structural integrity of utility-scale wind turbines. This monitoring system, based on automated techniques of operational modal analysis, aims to deliver important information regarding the actual condition of the wind turbine: early detection of structural changes (i.e. damage) and evaluation of fatigue condition of the support structure. In this paper, a special focus is given to the latter.
KeywordsOMA Wind turbine Damage detection Fatigue estimation
The authors would like to acknowledge: (1) all the financial support provided by the Portuguese Foundation for Science and Technology (FCT) to ViBest/FEUP in the framework of the Project Dynamic Behaviour Monitoring for Structural Safety Assessment/National Network of Geophysics (National Programme for Scientific Re-equipment) (2) the Ph.D. Scholarship (SFRH/BD/79328/2011) provided by FCT to the first author; (3) the support given by INEGI, the wind turbine manufacturer Senvion and the wind turbine owner Cavalum.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 1.The European Wind Energy Association (EWEA) (2016) Wind in power—2015 European statisticsGoogle Scholar
- 2.The European Wind Energy Association (EWEA) (2016) The European offshore wind industry—key trends and statistics 2015Google Scholar
- 7.Veljkovic M, Heistermann C, Husson W, Limam M, Feldmann M, Naumes J, Pak D, Faber T, M. Klose, Fruhner K-U, Krutschinna L, Baniotopoulos C, Lavasas I, Pontes A, Ribeiro E, Hadden M, Sousa R, Silva L, Rebelo C, Simoes R, Henriques J, Matos R, Nuutinen J, Kinnunen H (2012) High-strength tower in steel for wind turbines (Histwin). LuxembourgGoogle Scholar
- 12.Allemang RJ (2003) The modal assurance criterion—twenty years of use and abuse. Sound Vib. 37(8):14–23Google Scholar
- 14.Oliveira G (2016) Vibration-based structural health monitoring of wind turbines. PhD thesis. University of Porto, Faculty of Engineering. Porto, PortugalGoogle Scholar
- 17.Pelayo F, López-Aenlle M, Fernández-Canteli, A, Cantieni R (2011) Operational modal analysis of two wind turbines with foundation problems. In: Proceedings of 4th International Operational Modal Analysis Conference (IOMAC). Istanbul, TurkeyGoogle Scholar
- 18.Jonkman J, Butterfield S, Musial W, Scott G (2009) Definition of a 5-MW Reference Wind Turbine for Offshore System Development National Renewable Energy LaboratoryGoogle Scholar
- 19.Larsen T, Hansen A (2007) How 2 HAWC2, the user’s manual. Risø National Laboratory, RoskildeGoogle Scholar
- 20.HAWC2 web site (2016) HAWC2 model—NREL 5-MW Reference Wind Turbine. http://www.hawc2.dk
- 21.European Committee for Standardization (CEN) (2005) EN 1993-1-9 Eurocode 3: Design of steel structures—Part 1–9: FatigueGoogle Scholar
- 22.Guideline GW, Lioyd G (2010) Guideline for the certification of wind turbines. Germanischer, HamburgGoogle Scholar