| 摘要 |
The invention relates to a method of operating a wind turbine 1 to guard against oscillations of the wind turbine blades 5 when they are at a standstill or idling at low speeds, and to a wind turbine blade anti-oscillation apparatus 10. The apparatus comprises a releasably attachable blade cover 10 that provides a non-aerodynamic surface for a region of the blade to prevent air flow adhering to the blade and periodically detaching in a phenomenon known as vortex shedding. It therefore prevents oscillations of the blade becoming problematic. The cover can comprise temporary surface sections adhered or mechanically fastened to the blade or a sleeve 10 of a net-like material, positioned on the blade either before installation or in the field by service engineers using guide lines 16 and 17. |
