69 kV Cap Bank
69 kV Cap Bank
(OP)
What limits you on how big of a cap bank you can install at a 69 kV switchyard? I have 18 MVARS already at a switchyard and an 6 additional would help resolve a problem but I am being told that 24 MVARS is quite a bit on a 69 kV system.






RE: 69 kV Cap Bank
Rafiq Bulsara
http://www.srengineersct.com
RE: 69 kV Cap Bank
We have used capacitor banks of 21Mvar, 69kV, with series reactor to reduce inrush current.
One of the criteria of sizing capacitor bank is to keep the steady state voltage variation below 3% when switching them.
Best regards,
H. Bronzeado
RE: 69 kV Cap Bank
Regards
Marmite
RE: 69 kV Cap Bank
Our system peak is around 1450 MW.
I assume this 3% rule of thumb is only for banks that switch in and out frequently? I beleive that most of our cap banks our switched in or out maybe 2 or 3 times a year.
RE: 69 kV Cap Bank
Rafiq Bulsara
http://www.srengineersct.com
RE: 69 kV Cap Bank
RE: 69 kV Cap Bank
Yes. Bad design..lack of creativity..all could be possible. I was just relating to the original question. The actual "problem" and "solution" is still elusive from the posting.
Rafiq Bulsara
http://www.srengineersct.com