Volume 121, Number 3, February 2018
|Number of page(s)||6|
|Published online||28 March 2018|
The footprint of atmospheric turbulence in power grid frequency measurements
1 Institute of Physics and ForWind, Carl von Ossietzky University Oldenburg - Oldenburg, Germany
2 Center for Nonlinear Science, University of Muenster - Muenster, Germany
Received: 3 November 2017
Accepted: 13 March 2018
Fluctuating wind energy makes a stable grid operation challenging. Due to the direct contact with atmospheric turbulence, intermittent short-term variations in the wind speed are converted to power fluctuations that cause transient imbalances in the grid. We investigate the impact of wind energy feed-in on short-term fluctuations in the frequency of the public power grid, which we have measured in our local distribution grid. By conditioning on wind power production data, provided by the ENTSO-E transparency platform, we demonstrate that wind energy feed-in has a measurable effect on frequency increment statistics for short time scales that are below the activation time of frequency control. Our results are in accordance with previous numerical studies of self-organized synchronization in power grids under intermittent perturbation and give rise to new challenges for a stable operation of future power grids fed by a high share of renewable generation.
PACS: 05.45.Xt – Synchronization; coupled oscillators / 02.50.Fz – Stochastic analysis / 88.50.-k – Wind energy
© EPLA, 2018
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