Patent ID: 11879430
Assignee: WOBBEN PROPERTIES GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A method comprising:
detecting a sensor malfunction of a load sensor of a wind power installation, the wind power installation having a rotor and a rotor blade, the detecting comprising:
detecting a loading variable of the rotor blade via the load sensor, and
wherein detecting the sensor malfunction comprises detecting a sensor signal of the load sensor that is functionally frozen, such that the sensor signal is temporally constant,
estimating at least one loading variable of the rotor blade,
in response to the sensor signal being temporally constant, executing a comparability test, in which according to the at least one estimated loading variable, a check is executed as to whether a non-constant sensor signal is to be anticipated,
identifying a sensor malfunction based on the comparability test, and
in response to identifying the sensor malfunction, performing at least one operation from a list comprising generating a warning message, shutting down the wind power installation, and switching operation of the wind power installation to a safe operating mode.