Berlin 2018 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 70: Poster: Flows, Patterns, Delay, Reaction Diffusion
DY 70.1: Poster
Thursday, March 15, 2018, 15:30–18:00, Poster A
Does a wind turbine care about turbulent intermittency? — •Johannes Kruse1, Bodil Carlsen2, and Martin Greiner2 — 1Georg-August Universität Göttingen — 2Department of Engineering, Aarhus University, Denmark
Wind turbines operate in the turbulent atmospheric boundary layer and are exposed to highly intermittent wind fluctuations. We aim to clarify whether a wind turbine cares about these strongly non-Gaussian, multi-fractal fluctuations. Wind time series from an offshore site reveal an enlarged correlation time which is significantly larger than the typical turbine response time. A simple relaxation model for the wind-to-power conversion is investigated to quantify how the intermittency in the wind affects the statistical properties of the turbine power output and how this depends on the response time as well as the dynamical noise of the wind turbine. It is found that in particular for offshore wind turbines the intermittency in the wind can have a significant effect on the fluctuations of the wind power generation time series.