Wind turbine provided with yaw brakes having a brake lining with grooves

摘要

A wind turbine (2) provided with a yaw brake system (20) is described. The yaw brake system (20) comprising a brake calliper (24) and a brake disc (22), the yaw brake system (20), when activated, acting as a rotation restriction of a nacelle (6) in relation to a tower (4) of the wind turbine (2). The brake calliper (24) is provided with a brake pad having a brake lining and an actuator for moving the brake pad against the brake disc (22), wherein the brake lining (38) comprises a first surface (39) facing towards the brake disc (22). A groove (40) having a groove width (w) is formed in the first surface (39) of the brake lining (38), the groove (40) comprising a first end (141) and a second end (143), where at least the first end (141) and preferably also the second end (143) contacts a periphery of the brake lining (38). The groove width (w) is widening towards the first surface (39) of the brake lining (38).