Reliability analysis of wind turbines exposed to dynamic loads

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Abstract

Wind turbines are exposed to highly dynamic loads that cause fatigue and extreme load effects which are subject to significant uncertainties. Further, reduction of cost of energy for wind turbines are very important in order to make wind energy competitive compared to other energy sources. Therefore the turbine components should be designed to have sufficient reliability with respect to both extreme and fatigue loads also not be too costly (and safe). This paper presents models for uncertainty modeling and reliability assessment of especially the structural components such as tower, blades, substructure and foundation considering especially fatigue loads. The function of a wind turbine is highly dependent on many electrical and mechanical components as well as a control system also reliability aspects of these components are discussed and it is described how there reliability influences the reliability of the structural components. Illustrative examples are presented considering uncertainty modeling and reliability assessment for structural wind turbine components exposed to extreme loads and fatigue, respectively.
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Wind turbines are exposed to highly dynamic loads that cause fatigue and extreme load effects which are subject to significant uncertainties. Further, reduction of cost of energy for wind turbines are very important in order to make wind energy competitive compared to other energy sources. Therefore the turbine components should be designed to have sufficient reliability with respect to both extreme and fatigue loads also not be too costly (and safe). This paper presents models for uncertainty modeling and reliability assessment of especially the structural components such as tower, blades, substructure and foundation considering especially fatigue loads. The function of a wind turbine is highly dependent on many electrical and mechanical components as well as a control system also reliability aspects of these components are discussed and it is described how there reliability influences the reliability of the structural components. Illustrative examples are presented considering uncertainty modeling and reliability assessment for structural wind turbine components exposed to extreme loads and fatigue, respectively.
Original languageEnglish
Title of host publicationEURODYN 2014 - IX International Conference on Structural Dynamics : proceedings
EditorsA. Cunha, E. Caetano, P. Ribeiro, G. Müller
Number of pages8
Place of PublicationPorto
PublisherEuropean Association for Structural Dynamics (EASD)
Publication date2014
Pages39-46
ISBN (Electronic)978-972-752-165-4
Publication statusPublished - 2014
Publication categoryResearch
Peer-reviewedYes
Event9th International Conference on Structural Dynamics - Porto, Portugal
Duration: 30 Jun 20142 Jul 2014
http://paginas.fe.up.pt/~eurodyn2014/

Conference

Conference9th International Conference on Structural Dynamics
LandPortugal
ByPorto
Periode30/06/201402/07/2014
Internetadresse
SeriesThe International Conference on Structural Dynamics
Number9

Bibliographical note

Keynote paper.

    Research areas

  • Wind turbines, Reliability, Fatigue
ID: 213823389