Detecting atypical assets in a wind farm
From all modes identified in the population, the most uncommon ones will be considered atypical. Assets with the largest portion of uncommon modes are then labeled as atypical – the Black Sheep of the population.
To perform BlackSheep Detection with MultiViz Vibration, the user simply needs to upload vibration time series data for a population of machines and request, via API or Python package, an analysis for the population of sources.
The behavior in Turbine2 was caused by a minor electrical issue affecting the sensor recording the vibration signal. MultiViz Vibration was able to detect the problem even in data that would normally be considered healthy, as the turbine had just entered operation.
Turbine5 displays a major failure during the entire recorded time. After 1.2 years of operation, the high-speed shaft bearing had to be replaced due to an inner raceway failure.
However, after this replacement, the failure had already propagated through the entire gearbox, which had to be replaced after approximately 2 years of operation. After this, the turbine got into a healthy condition.
The image shows the entire population of assets in the wind farm, as well as their detected modes.