10. Systems Considerations
• Turbines are difficult to access
– Climb an 80m (262 ft) tower then hoist tools
– Hand-held CMS incurs a large labor cost
11. System Considerations
• IT Infrastructure
– Down-tower connection
– Local network infrastructure
– NERC Critical Infrastructure Protection (CIP)
– Operation network security (AIC vs CIA)
12. Operating Conditions
• Large variations in Main Rotor Speed
speed
– DFIG
– Tower Shadow
– Wind Shear Profile
• Large variations in
torque/power
– 10% - 105% of rated
13. Knowledge Creation
Manually translating data into a diagnosis for
every turbine has a large cost!
Which is most useful to an operator?
• 01000011 01101000 01100001 01101110 01100111
01100101 00100000 01101101 01100001 01101001
01101110 00100000 01100010 01100101 01100001
01110010 01101001 01101110 01100111
• 43 68 61 6e 67 65 20 6d 61 69 6e 20 62 65 61 72 69
6e 67 0d 0a
• Change main bearing
Hinweis der Redaktion
Example of the maintenance strategies is changing the oil in your car:Reactive – this is driving your car off the lot and never changing the oil until the engine seizes. PROS: Low effort, minimum amount of maintance CONS: Lot of collateral damage, increased downtimePreventive – this is how most people change their oil, every 3000 miles. PROS: Fewer failures CONS: parts ‘waste’, more planned maintenance, still get some ‘early-life’ failuresPredictive – many vehicles now have oil life sensors that tell you when to change the oil. PROS: Most efficient methods, highest up-time CONS: Level of effort required to know component condition
O&M costs are 35%-45% of a wind farms operating budget when the turbines come off warranty.Minimizing these cost directly affects the bottom line of the wind farmThis data is from one of the top 10 wind asset owners in the US