Incorporating air density into a Gaussian process wind turbine power curve model for improving fitting accuracy

Pandit, Ravi Kumar and Infield, David and Carroll, James (2018) Incorporating air density into a Gaussian process wind turbine power curve model for improving fitting accuracy. Wind Energy. pp. 1-14. ISSN 1095-4244 (https://doi.org/10.1002/we.2285)

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Abstract

A power curve conventionally represents the relationship between hub height wind speed and wind turbine power output. Power curves facilitate the prediction of power production at a site and are also useful in identifying the significant changes in turbine performance which can be vital for condition monitoring. However, their accuracy is significantly influenced by changes in air density, mainly when the turbine is operating below rated power. A Gaussian process (GP) is a nonparametric machine learning approach useful for power curve fitting. Critical analysis of temperature correction is essential for improving the accuracy of wind turbine power curves. The conventional approach is to correct the data for air density before it is binned to provide a power curve, as described in the IEC standard. In this paper, four different possible approaches of air density correction and its effect on GP power curve fitting model accuracy are explored to identify whether the traditional IEC approach used for air density correction is most effective when estimating power curves using a GP. Finding the most accurate air density compensation approach is necessary to minimize GP model uncertainty.

  • Item type:Article
    ID code:65901
    Dates:
    Date
    Event
    22 October 2018
    Published
    6 September 2018
    Accepted
    Notes:This is the peer reviewed version of the following article: Pandit, RK, Infield, D & Carroll, J 2018, 'Incorporating air density into a Gaussian process wind turbine power curve model for improving fitting accuracy' Wind Energy, pp. 1-14., which has been published in final form at https://doi.org/10.1002/we.2285. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
    Subjects:Technology > Engineering (General). Civil engineering (General) > Environmental engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:31 Oct 2018 09:51
    Last modified:20 Apr 2024 00:35
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/65901
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