Abstract: A method of assembling a tower section of a wind turbine tower is provided. The method includes arranging the tower section of the wind turbine tower in a horizontal orientation; transporting a damper unit to a position inside the tower section while the tower section is arranged in the horizontal orientation; and mounting the damper unit to the tower section, wherein the damper unit is configured to damp motions of the wind turbine tower. Further, a horizontal transport system is provided that is supported at least at one position by the tower section and that includes a movable part configured to support a damper unit and to transport the damper unit in a horizontal direction from a position adjacent to an end of the tower section to a position at or adjacent to a mounting position of the damper unit inside the tower section.

Abstract: It is described a method of installing a power cable (5) in a wind turbine tower (1), in particular for transportation, the method comprising: arranging a section (5) of the cable within the tower, the section having a length, in particular by at least an upper excess cable portion, greater than the tower height (h), by forming a cable loop (27, 33) within the tower (1), wherein an angle enclosed between a normal (34) of a cable loop plane and the longitudinal direction (4) of the tower (1) is between 70° and 110°.

Abstract: A wind turbine (1) comprising: a tower (2), a nacelle (3) mounted on top of the tower (2), a lift landing platform (7) mounted inside the tower (2), a lift (8) configured to lift cargo (9) to the lift landing platform (7), a hoisting device (13) mounted to the nacelle (3) and configured to hoist cargo (9) lifted to the lift landing platform (7) into the nacelle (3), and guiding means (14) configured to limit a lateral movement (L) of the cargo (9) when hoisted. Damage to the wind turbine or the cargo itself can thus be avoided.

Abstract: A method of assembling a tower section of a wind turbine tower is provided. The method includes arranging the tower section of the wind turbine tower in a horizontal orientation; transporting a damper unit to a position inside the tower section while the tower section is arranged in the horizontal orientation; and mounting the damper unit to the tower section, wherein the damper unit is configured to damp motions of the wind turbine tower. Further, a horizontal transport system is provided that is supported at least at one position by the tower section and that includes a movable part configured to support a damper unit and to transport the damper unit in a horizontal direction from a position adjacent to an end of the tower section to a position at or adjacent to a mounting position of the damper unit inside the tower section.