Patent ID: 8546967

Claim:
A control system for controlling operation of a wind turbine based on one or more control parameters, the control system comprising: a first sensor device configured to measure a control parameter used for controlling operation of the wind turbine, wherein the first sensor device has a first set of operating failure conditions, a second sensor device configured to measure the control parameter, wherein the second sensor device has a second set of operating failure conditions, and wherein the first set of operating failure conditions comprises at least one operating failure condition excluded from the second set of operating failure conditions, and a third sensor device configured to detect an operating failure condition of at least one of the first sensor device and the second sensor device, wherein the control system is configured to select between controlling operation of the wind turbine on the basis of control parameters measured by the first sensor device or on the basis of control parameters measured by the second sensor device, based on measurements performed by the third sensor device.