Compensation of PV generator output power fluctuations with energy storage systems

Julius Schnabel, Seppo Valkealahti

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


    Photovoltaic generators (PVG) suffer from short-term intermittency of output power. With significant penetration of PV this intermittency can lead to power systems instability and power quality problems. Energy storage systems (ESS) can be used to compensate PV power fluctuations in order to mitigate these problems. In this paper ESS behavior, control and sizing have been investigated to mitigate instabilities caused by PV power plants operating in Northern European conditions through simulations that utilize measurements from the Tampere University of Technology (TUT) Solar PV power station research plant. Continuous synchronized measurements have been recorded with the irradiance and PV module temperature sensor network with a 10 Hz sampling frequency since June 2011. The ESS capacity and power requirements are derived from the simulations for different PVG sizes and PV power ramp rate (RR) limits. The results show how both capacity and power requirements decrease as functions of the RR limit and the PVG size. Also, interesting differences have been noticed compared to similar studies done in Southern European climate, which indicate that the operational climate of the PVG can have an effect on ESS sizing.
    Original languageEnglish
    Title of host publication31st European Photovoltaic Solar Energy Conference and Exhibition (31st EU PVSEC), 14– 18 September, 2015, Hamburg, Germany
    Number of pages5
    Publication statusPublished - 14 Sept 2015
    Publication typeA4 Article in conference proceedings
    EventEuropean Photovoltaic Solar Energy Conference -
    Duration: 1 Jan 2014 → …


    ConferenceEuropean Photovoltaic Solar Energy Conference
    Period1/01/14 → …

    Publication forum classification

    • Publication forum level 0

    ASJC Scopus subject areas

    • General Energy


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