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Energies 2014, 7(12), 8279-8293; doi:10.3390/en7128279

Fatigue Load Estimation through a Simple Stochastic Model

ForWind—Center for Wind Energy Research, Institute of Physics, Carl von Ossietzky University of Oldenburg, 26111 Oldenburg, Germany
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Received: 1 August 2014 / Revised: 27 November 2014 / Accepted: 28 November 2014 / Published: 11 December 2014
(This article belongs to the Special Issue Wind Turbines 2014)
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Abstract

We propose a procedure to estimate the fatigue loads on wind turbines, based on a recent framework used for reconstructing data series of stochastic properties measured at wind turbines. Through a standard fatigue analysis, we show that it is possible to accurately estimate fatigue loads in any wind turbine within one wind park, using only the load measurements at one single turbine and the set of wind speed measurements. Our framework consists of deriving a stochastic differential equation that describes the evolution of the torque at one wind turbine driven by the wind speed. The stochastic equation is derived directly from the measurements and is afterwards used for predicting the fatigue loads for neighboring turbines. Such a framework could be used to mitigate the financial efforts usually necessary for placing measurement devices in all wind turbines within one wind farm. Finally, we also discuss the limitations and possible improvements of the proposed procedure. View Full-Text
Keywords: fatigue loads; stochastic modeling; Langevin equation fatigue loads; stochastic modeling; Langevin equation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lind, P.G.; Herráez, I.; Wächter, M.; Peinke, J. Fatigue Load Estimation through a Simple Stochastic Model. Energies 2014, 7, 8279-8293.

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