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FEATURE SPONSOR


CONDITION MONITORING


IGNORE INDIVIDUAL AREAS OF THE DRIVE TRAIN AT YOUR PERIL


If this is the case and we accept that what happens in one area of the drive train will directly impact another, then why when it comes to condition monitoring in a wind turbine drive train are so many still only monitoring part of the drive train and ignoring parts that directly impact others?


1 Main bearing failure will directly impact the planetary section of a gearbox.


2 Main shaft misalignment will also cause problems in the planetary section and this will also be transmitted through to the helical section


3 Generator misalignment or generator imbalance will directly impact the high speed bearings of a gearbox


4 Degraded oil quality and oil contaminated with particles has a direct impact on bearing and toothed component life


All of the above will lead to (if you’re lucky) service in the nacelle or more often than not the removal of the gearbox and other components from the nacelle for workshop service.


With a good Condition Management System monitoring the whole drive train over 70% - 75% of drive train interventions are minor and can be made in the nacelle. The remaining 25-30% that requires workshop service is still for non-critical failures as they have been caught in time and the components can be refurbished and returned to operation.


CONDITION MONITORING INDUSTRY ACCEPTANCE Using no condition monitoring is now fortunately regarded by most as bad practice.


Using condition monitoring that only focuses on vibration in one part of the drivetrain is better than nothing but ignores the interconnected


INTERCONNECTION


My right knee is the problem, but it’s my right hip and left knee that have raised the alarm. I am a living drive train and my nerves are the sensors. My orthopedic surgeon will solve the problem with a few spare parts and a timely and skilled intervention. Who knows, once I have been upgraded I might even get an extended warranty.


Make sure your wind turbine has a joined up interconnected condition management system that covers the whole drive train and looks at more than just vibration in the gearbox.


At Moventas we have CMaS the interconnected, intelligent drive train condition management system. This is the nerve system for your drive train. We also have the brains and the surgeons in our analysis team, on site engineers and technicians.


Dave Moss Moventas


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www.windenergynetwork.co.uk 73


nature of the drivetrain and the direct impact one part of the drivetrain will have on another. Using joined up monitoring or condition management as we prefer to call it provides earlier and clearer recognition of symptoms that go on to cause failure.


The earlier this recognition the more time we have to react and the easier the preventative intervention that needs to be made is.


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