Variability in large-scale wind power generation

Juha Kiviluoma (Corresponding Author), Hannele Holttinen, David Weir, Richard Scharff, Lennart Soder

    Research output: Contribution to journalArticleScientificpeer-review

    19 Citations (Scopus)

    Abstract

    The paper demonstrates the characteristics of wind power variability and net load variability in multiple power systems based on real data from multiple years. Demonstrated characteristics include probability distribution for different ramp durations, seasonal and diurnal variability and low net load events. The comparison shows regions with low variability (Sweden, Spain and Germany), medium variability (Portugal, Ireland, Finland and Denmark) and regions with higher variability (Quebec, Bonneville Power Administration and Electric Reliability Council of Texas in North America; Gansu, Jilin and Liaoning in China; and Norway and offshore wind power in Denmark). For regions with low variability, the maximum 1?h wind ramps are below 10% of nominal capacity, and for regions with high variability, they may be close to 30%. Wind power variability is mainly explained by the extent of geographical spread, but also higher capacity factor causes higher variability. It was also shown how wind power ramps are autocorrelated and dependent on the operating output level. When wind power was concentrated in smaller area, there were outliers with high changes in wind output, which were not present in large areas with well-dispersed wind power.
    Original languageEnglish
    Pages (from-to)1649-1665
    JournalWind Energy
    Volume19
    Issue number9
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Wind power
    Power generation
    Probability distributions

    Keywords

    • wind power
    • variability
    • net load
    • variable generation
    • power systems

    Cite this

    Kiviluoma, J., Holttinen, H., Weir, D., Scharff, R., & Soder, L. (2016). Variability in large-scale wind power generation. Wind Energy, 19(9), 1649-1665. https://doi.org/10.1002/we.1942
    Kiviluoma, Juha ; Holttinen, Hannele ; Weir, David ; Scharff, Richard ; Soder, Lennart. / Variability in large-scale wind power generation. In: Wind Energy. 2016 ; Vol. 19, No. 9. pp. 1649-1665.
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    Kiviluoma, J, Holttinen, H, Weir, D, Scharff, R & Soder, L 2016, 'Variability in large-scale wind power generation', Wind Energy, vol. 19, no. 9, pp. 1649-1665. https://doi.org/10.1002/we.1942

    Variability in large-scale wind power generation. / Kiviluoma, Juha (Corresponding Author); Holttinen, Hannele; Weir, David; Scharff, Richard; Soder, Lennart.

    In: Wind Energy, Vol. 19, No. 9, 2016, p. 1649-1665.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Kiviluoma, Juha

    AU - Holttinen, Hannele

    AU - Weir, David

    AU - Scharff, Richard

    AU - Soder, Lennart

    PY - 2016

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    N2 - The paper demonstrates the characteristics of wind power variability and net load variability in multiple power systems based on real data from multiple years. Demonstrated characteristics include probability distribution for different ramp durations, seasonal and diurnal variability and low net load events. The comparison shows regions with low variability (Sweden, Spain and Germany), medium variability (Portugal, Ireland, Finland and Denmark) and regions with higher variability (Quebec, Bonneville Power Administration and Electric Reliability Council of Texas in North America; Gansu, Jilin and Liaoning in China; and Norway and offshore wind power in Denmark). For regions with low variability, the maximum 1?h wind ramps are below 10% of nominal capacity, and for regions with high variability, they may be close to 30%. Wind power variability is mainly explained by the extent of geographical spread, but also higher capacity factor causes higher variability. It was also shown how wind power ramps are autocorrelated and dependent on the operating output level. When wind power was concentrated in smaller area, there were outliers with high changes in wind output, which were not present in large areas with well-dispersed wind power.

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    Kiviluoma J, Holttinen H, Weir D, Scharff R, Soder L. Variability in large-scale wind power generation. Wind Energy. 2016;19(9):1649-1665. https://doi.org/10.1002/we.1942