Statistical Impact Evaluation of Stochastic Parameters Enhancing Solar Power Inherent Smoothing

Nida Riaz, Sami Repo, Anders V. Lindfors

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    4 Citations (Scopus)

    Abstract

    The characteristic variability of solar power brings potential threats to power system frequency stability by introducing short-term power fluctuations. A nationwide virtual PV (photovoltaic) system of 14 locations in Finland with interplant distances between 10 km to 1065 km has been analyzed at 1 Hz resolution by introducing stochastic variables i.e. power fluctuation, maximum power fluctuation and smoothing potential factor. The paper presents a multifold smoothing analysis based on geographical dispersion, ensemble size, temporal resolutions and interplant distances of PV plants. Empirical expressions are proposed using regression analysis, which represents a decay of smoothing potential factor for a decreasing time resolution. Aggregated strength of maximum power fluctuation of$N$number of PV plants decreases by a converging factor 1/-N and an ensemble of 14 PV plants follows the strict ramp rate limits for 97.5% of the total production time. Spatial correlation w.r.t interplant distances is also focused.
    Original languageEnglish
    Title of host publication2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)
    PublisherIEEE
    Number of pages6
    ISBN (Electronic)978-1-5386-4505-5
    ISBN (Print)978-1-5386-4506-2
    DOIs
    Publication statusPublished - Oct 2018
    Publication typeA4 Article in conference proceedings
    EventIEEE PES Innovative Smart Grid Technologies Conference Europe -
    Duration: 1 Jan 1900 → …

    Conference

    ConferenceIEEE PES Innovative Smart Grid Technologies Conference Europe
    Period1/01/00 → …

    Keywords

    • Fluctuations
    • Smoothing methods
    • Power smoothing
    • Uncertainty
    • Frequency control
    • Time-frequency analysis
    • Power system stability
    • Maximum power fluctuation
    • PV generation
    • Solar irradiance uncertainty
    • Ramp rate

    Publication forum classification

    • Publication forum level 1

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