Exciter phase fault protection
Exciter phase fault protection
(OP)
Dear All.
We are looking for to some exciter phase fault protection.
Please see attached scheme ( red colored).
This scheme of static AVR of 375MVA units. Old protection board sended many unwanted trips and now is disconnected.
Actually we need protection against line to line fault and phase disconnection. Line to ground/earth protected by
64R ( rotor gound/earth fault 100% injection principle).
Vendor of old protection not so want help us and we check
other options ( cost is not issue).
Thanks for any ideas, recommendations.
Best Regards.
Slava
We are looking for to some exciter phase fault protection.
Please see attached scheme ( red colored).
This scheme of static AVR of 375MVA units. Old protection board sended many unwanted trips and now is disconnected.
Actually we need protection against line to line fault and phase disconnection. Line to ground/earth protected by
64R ( rotor gound/earth fault 100% injection principle).
Vendor of old protection not so want help us and we check
other options ( cost is not issue).
Thanks for any ideas, recommendations.
Best Regards.
Slava






RE: Exciter phase fault protection
RE: Exciter phase fault protection
Thank you for reply.
Isn't so simple, isn't generator, it's exciter ( yes it's 3-ph AC source). In parallel with this forum, we check with companies like to GE, ABB, Alstom, on this momemnt no results.
Sorry, only one recommendation: replace AVR to new one, that include this protection module. Nice solution, we think maybe replace also generator
Regards.
Slava
RE: Exciter phase fault protection
You might want to contact the Basler Exciter people (unless this is a Basler that is causing you problems!. They make large exciters and might be have a one-off solution they could work out with you. They purchased the Cutler-Hammer (was Westinghouse) exciter division not too long ago, in addition to their own line of exciters. Just a thought..
http://www.basler.com/html/ses.htm
RE: Exciter phase fault protection
I think you send me to target.
Tomorrow, we try connect to Basler.
Many, many thanks.
Best Regards.
Slava