Probabilistic Meteorological Characterization for Turbine Loads

The Science of Making Torque from Wind 2014

Kelly, M.^1 ; Larsen, G.^1 ; Dimitrov, N.K.^1 ; Natarajan, A.^1

Department of Wind Energy, Risø Campus, Technical University of Denmark, Roskilde 4000, Denmark^1

关键词: Atmospheric flows;    Atmospheric stability;    Atmospheric surface layers;    Fatigue loads;    Improved designs;    Probabilistic descriptions;    Turbine loads;    Turbulence intensity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/524/1/012076/pdf
DOI  :  10.1088/1742-6596/524/1/012076

来源: IOP

【 摘 要 】

Beyond the existing, limited IEC prescription to describe fatigue loads on wind turbines, we look towards probabilistic characterization of the loads via analogous characterization of the atmospheric flow, particularly for today's "taller" turbines with rotors well above the atmospheric surface layer. Based on both data from multiple sites as well as theoretical bases from boundary-layer meteorology and atmospheric turbulence, we offer probabilistic descriptions of shear and turbulence intensity, elucidating the connection of each to the other as well as to atmospheric stability and terrain. These are used as input to loads calculation, and with a statistical loads output description, they allow for improved design and loads calculations.