Anvari, M and Lohmann, G and Wächter, M and Milan, P and Lorenz, E and Heinemann, D and Tabar, M Reza Rahimi and Peinke, Joachim (2016) Short term fluctuations of wind and solar power systems. New Journal of Physics, 18 (2016). 063027. ISSN 1367-2630

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Abstract

Wind and solar power are known to be highly influenced by weather events and may ramp up or down abruptly. Such events in the power production influence not only the availability of energy, but also the stability of the entire power grid. By analysing significant amounts of data from several regions around the world with resolutions of seconds to minutes, we provide strong evidence that renewable wind and solar sources exhibit multiple types of variability and nonlinearity in the time scale of seconds and characterise their stochastic properties. In contrast to previous findings, we show that only the jumpy characteristic of renewable sources decreases when increasing the spatial size over which the renewable energies are harvested. Otherwise, the strong non-Gaussian, intermittent behaviour in the cumulative power of the total field survives even for a country-wide distribution of the systems. The strong fluctuating behaviour of renewable wind and solar sources can be well characterised by Kolmogorov-like power spectra and q-exponential probability density functions. Using the estimated potential shape of power time series, we quantify the jumpy or diffusive dynamic of the power. Finally we propose a time delayed feedback technique as a control algorithm to suppress the observed short term non-Gaussian statistics in spatially strong correlated and intermittent renewable sources.

Item Type:	Article
Additional Information:	Publiziert mit Hilfe des DFG-geförderten Open Access-Publikationsfonds der Carl von Ossietzky Universität Oldenburg.
Uncontrolled Keywords:	renewable energies, intermittency, jumpy and diffusive dynamics, tipping point, time-delayed feedback method
Subjects:	Science and mathematics > Physics
Divisions:	Faculty of Mathematics and Science > Institute of Physics (IfP)
Date Deposited:	20 Sep 2017 05:44
Last Modified:	20 Sep 2017 05:46
URI:	https://oops.uni-oldenburg.de/id/eprint/3263
URN:	urn:nbn:de:gbv:715-oops-33448
DOI:	doi:10.1088/1367-2630/18/6/063027
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