slavag
Electrical
- May 15, 2007
- 2,044
Hi.
I would like ask you about voltage protection for generators ( high voltages generator from 30MW up to 600MW, turbo,disiel and gas turbime ).
As I see several companies used also overvoltages and also
overexcitation protection. For example GE recommend use only
overexcitation protection, it's covered also overvoltage
(I'm agree with this). But eroupean companies used both of them (O.K. today is not problem with numerical relay, but it's additional settings, contacts, testings ,etc).
What is your opinion.
When recommended used undervoltage protection for generator.
Someone used overload protection for trip of generator CB or send only alarms.
Last year we provide commissioning of protection for GE, Siemens, ABB and Alstom generators (new and retrofit).
Each generator mnf request somthing other.
Different also in requrements for trip matrix.
For example underfrequency send trip to LOR or only to CB,etc.
We have some standards or prefer continue build according to customer requrements?
Best Regards.
Slava
I would like ask you about voltage protection for generators ( high voltages generator from 30MW up to 600MW, turbo,disiel and gas turbime ).
As I see several companies used also overvoltages and also
overexcitation protection. For example GE recommend use only
overexcitation protection, it's covered also overvoltage
(I'm agree with this). But eroupean companies used both of them (O.K. today is not problem with numerical relay, but it's additional settings, contacts, testings ,etc).
What is your opinion.
When recommended used undervoltage protection for generator.
Someone used overload protection for trip of generator CB or send only alarms.
Last year we provide commissioning of protection for GE, Siemens, ABB and Alstom generators (new and retrofit).
Each generator mnf request somthing other.
Different also in requrements for trip matrix.
For example underfrequency send trip to LOR or only to CB,etc.
We have some standards or prefer continue build according to customer requrements?
Best Regards.
Slava