Patent ID: 9518561
Filing Date: 2016-12-13
CPC Classification: F03D,F05B,Y02E

Claim Text:
1. A method of operating a wind power installation having an aerodynamic rotor with at least one rotor blade, the method comprising: operating the wind power installation at an operating point dependent on the wind speed; detecting an operating parameter of the operating point, wherein the detected operating parameter is electric power being generated by the wind power installation; comparing the detected operating parameter to a first tolerance range and a second tolerance range of a reference parameter, the first tolerance range being within the second tolerance range; heating the at least one rotor blade in response to the detected operating parameter being outside of the first tolerance range and within the second tolerance range, while continuing the operation of the wind power installation; and stopping or shutting down the wind power installation in response to the detected operating parameter being outside of the first tolerance range and the second tolerance range.