Influence of the control system on wind turbine reliability in extreme turbulence

Imad Abdallah, Anand Natarajan, J. D. Sørensen

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Abstract

One of the critical design driving load cases for modern large onshore/offshore wind turbines is power production in extreme turbulence. According to the IEC 61400-1 edition 3 design standard, the normal production extreme loads are extrapolated and compared to the extreme loads obtained under extreme turbulence input. This study shows that using a probabilistic approach and the first order reliability method, wind turbine structural reliability can be assessed when the extreme turbulence model is uncertain. The structural reliability is assessed for a wind turbine with/without structural load alleviation control features. It is shown that large uncertainties in inflow conditions and turbulence can be significantly reduced while maintaining an acceptable structural reliability through the use of advanced structural load alleviation control features. However, that comes at a cost of increased controller complexity and loss in annual energy production.
Original languageEnglish
Article number012069
Book seriesJournal of Physics: Conference Series (Online)
Volume524
Issue number1
Number of pages10
ISSN1742-6596
DOIs
Publication statusPublished - 2014
Event5th International Conference on The Science of Making Torque from Wind 2014 - Technical University of Denmark, Copenhagen, Denmark
Duration: 10 Jun 201420 Jun 2014
Conference number: 5
http://indico.conferences.dtu.dk/conferenceDisplay.py?confId=138

Conference

Conference5th International Conference on The Science of Making Torque from Wind 2014
Number5
LocationTechnical University of Denmark
Country/TerritoryDenmark
CityCopenhagen
Period10/06/201420/06/2014
Internet address

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