Shunt Reactor Bank calculations
Shunt Reactor Bank calculations
(OP)
I am trying to calculate the size of inductors for a three phase shunt reactor bank to provide 3MVAR at 33kV.
Calculations
XL=(kV^2)/MVAR = 33^2/3 = 363 ohms
L= XL/(2piF)= 363/376.99 = 0.962 Henries
Is this value correct, if so will the bank require an indcutor of 0.962 henries per phase?
This is where I get a little confused. Will three 0.962 Henry reactors (one per phase) form a 0.962 reactor bank?
I know that with capacitor banks a 600 kVar bank is formed of 3- 200kVar units. 200 kVar per phase.
Calculations
XL=(kV^2)/MVAR = 33^2/3 = 363 ohms
L= XL/(2piF)= 363/376.99 = 0.962 Henries
Is this value correct, if so will the bank require an indcutor of 0.962 henries per phase?
This is where I get a little confused. Will three 0.962 Henry reactors (one per phase) form a 0.962 reactor bank?
I know that with capacitor banks a 600 kVar bank is formed of 3- 200kVar units. 200 kVar per phase.






RE: Shunt Reactor Bank calculations
what I meant to ask was if three inductors of 0.9 henries (one per phase) will give me a 3MVAR bank at 33kV? based on shown calculations.
Thanks
RE: Shunt Reactor Bank calculations
Rafiq Bulsara
http://www.srengineersct.com
RE: Shunt Reactor Bank calculations
What you've done is correct. You can use either
3-phase MVA and kV ph-ph
or
1-phase MVA and kV ph-n
Both will give you the same result.
RE: Shunt Reactor Bank calculations
Rafiq Bulsara
http://www.srengineersct.com
RE: Shunt Reactor Bank calculations
RE: Shunt Reactor Bank calculations
However, you can simply tell your reactor supplier the voltage and MVAr you need and they'll take it from there.
RE: Shunt Reactor Bank calculations
It is true that I can just let someone else handle this, but I would like to understand what needs to be done before we move forward with a project.