Capacitor installation on distribution line 3

[palakjignesh]

Hi,
How to find line current with capacitor bank in service ? I am preparing project on capacitor bank installation on 11kv distribution lines.

 

[marks1080]

You might want to be more concerned about the short circuit current with the cap installed. I would assume you will need changes to whatever relaying or fuse coordination is on that line currently.

 

[rbulsara]

By vectorially adding capacitor currents to the existing load currents.

Hint: Capacitor current will be in opposite direction to inductive reactive current.

Rafiq Bulsara

http://www.srengineersct.com

 

[jghrist]

kVA² = kW_LOAD² + (kvar_LOAD-kvar_CAPS)²
Amps = kVA/(sqrt(3)·kV)

 

[cuky2000]

Under steady-state conditions, cap bank hepl to reduce the full load current and improve the voltage regulation.

Under short circuit scenary, cap bank don not add significant contribution to the fault current.

If my memory is OK, there is an old post in this topic. I suggest to check this site.

 

[stwalk]

This paper might help you out. It is the RUS guide for the application of capacitors

 

[ClarenceEugene]

I have a 3,600 Kvar power factor correction capacitor unit that's rated for 13.2Kv. I would like to know what the Kvar capacity would be if were installed on a 4.16Kv system?

 

[dpc]

ClarenceEugene,

In the future, please start a new thread for a new question, instead of hijacking an existing thread.

The kVARs will vary as the square of the applied voltage.

David Castor

http://www.cvoes.com

 

[waross]

Not much.
About 360 KVAR.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[KJLRSA]

kVAr out = kVARrated/((kv1/kv2)^2) = 3600/((13.2/4.16)^2) = 357kVAR