Failed anemometer

Understanding what the WindESCo failed anemometer issue check is for

What is the purpose of the turbine issue check?

• The anemometer on a given turbine appears to have failed and is providing unreliable wind speed and direction measurements.
• If the anemometer has failed, the turbine may be incorrectly cutting-in, cutting-out, or yawing non-optimally.

What does this look like?

• The failed anemometer can be identified in several ways, but a clear one is through the yaw misalignment estimate that was previously consistent, but is now deviating from typical behavior
• For WindESCo, this has typically been indicative of a failure or impending failure