Flux Probe monitoring on 4 pole, 1800 rpm generator
Flux Probe monitoring on 4 pole, 1800 rpm generator
(OP)
We are installting a 25 MW 4 pole, 1800 RPM generator made by Converteam. Our electrical department has requested that we look into having a flux probe sensor installed in the unit however the manufacturer has indicated that there is very little value on a 4 pole 1800 rpm machine of this size.
Does anyone out there have any experiences with or comments on the value of this monitoring on this type of generator?
Does anyone out there have any experiences with or comments on the value of this monitoring on this type of generator?





RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
So, back to the question, how useful is the flux sensor on our type of machine?
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
That's not a definitive rbasis
just some thoughts fwiw.I'm not a big generator guy.
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(2B)+(2B)' ?
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
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(2B)+(2B)' ?
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
In my opinion unless you have the rotor out for some reason then it would not be worth the effort of unthreading it specifically to fit an air-gap search coil. If the opportunity is there then it is certainly worth considering as the cost of installation isn't all that high and a 25MW set is still a fairly pricey piece of plant.
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If we learn from our mistakes I'm getting a great education!
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
I want to know if anyone with in the field experience has seen flux probes provide a real benefit to a ~25 MW 4 pole machine? What were they? Did you catch a failing winding or something else? is there someone out there who wishes they had flux monitoring as it would have saved a headache or two?
It's about utility. I could probably pay to get pin striping put on the generator. It would look nice but it doesn't change the performance or reliability so what 's the scoop? Is this flux monitoring pinstriping or practical?
Forget I mentioned pinstriping. I'll probably hit a nerve with the hotrod crowd.
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
Really it is like any protection - an insurance policy against something you hope will never happen. How critical is the generator to your business? If you identify a fault you can plan a repair at your convenience. An undetected fault will probably announce itself in a more aggressive manner at some future date. Can you afford the downtime?
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If we learn from our mistakes I'm getting a great education!
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
which will comprise on dc voltmeter showing output dc voltage of avr (input to exciter stator) and current (to the exciter stator).
If you have not installed them, get them installed first.
But if you have already installed the above mentioned meters for monitoring, you should get flux probe installed as well it will also give you a plus in condition monitoring.
But I have a question that does any one knows the method to get main rotor current, exciter rotor current and voltage on meters??? as they are rotating parts. So, I wonder how to get them????
Thanks
RE: Flux Probe monitoring on 4 pole, 1800 rpm generator
There are other ways to detect a shorted turn but a flux probe is the most accurate online method. The flux probe can tell you there is a shorted turn long before you have vibration problems. If you know about the problem before it is severe you can plan to fix it when it is convenient.