Intermittent Fingerprints in Wind-Turbine Interactions
We show that the turbulent wind observed at an offshore wind farm is non-Gaussian through analysis of velocity increments, extended self-similarity and intermittency in the energy flux. We then modify Gaussian turbulence using multi-fractal fields and reproduce most of the observed non-Gaussianity. By using cubed velocities as a simplistic wind-turbine interaction model, we demonstrate how the turbulence intensity, integral length, and the intermittency seen in non-Gaussian turbulence make fingerprints on the turbine power. These fingerprints are to some extend verified by comparing measured power with simulated power using a wind-turbine interaction simulator.
KeywordsTurbulence Intensity Turbine Power Velocity Increment Simulated Power Offshore Wind Farm
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