Abstract: The present disclosure relates to wind turbine blades, devices and methods for reducing vibrations in wind turbines, particularly during installation. In an aspect, a device for mitigating vibrations of a blade of a wind turbine during standstill is provided. The device comprises a flexible base having a first connection area and a second connection area, the first connection area being configured to be attached to the second connection area to form a removable attachment. The device further comprises one or more airflow modifying elements attached to the flexible base. The flexible base is configured to fit around a portion of the rotor blade such that the removable attachment is positioned substantially at a leading edge of the blade. The present disclosure further relates to methods for mitigating vibrations in a parked wind turbine blade and to sleeves for wrapping around a portion of a wind turbine blade.

Abstract: The present disclosure relates to wind turbine blades and methods for reducing wind turbine vibrations. More particularly, the present disclosure relates to wind turbine blades and methods for reducing wind turbine vibrations of one or components of a wind turbine when the wind turbine is parked or idling.

Abstract: A wind turbine blade includes a drain comprising at least one bore formed on the surface of the blade and communicating with the interior of the blade, the bore being located at the root area. The bore is preferably from 8 mm to 15 mm wide. In blades having an internal strengthening structural member creating an enclosure, there is a bore on either side of the enclosure member. The bore is within 5 cm from the enclosure member.

Abstract: A wind turbine blade includes a drain comprising at least one bore formed on the surface of the blade and communicating with the interior of the blade, the bore being located at the root area. The bore is preferably from 8 mm to 15 mm wide. In blades having an internal strengthening structural member creating an enclosure, there is a bore on either side of the enclosure member. The bore is within 5 cm from the enclosure member.