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Synchronous Generator Exam Question

grumps · 2008-05-19 20:05:50

Folks, I'd be very much appreciative if electrically minded people would be able to shed any light on the following past exam question: A 722 MVA, 50 Hz, 19kV, steam driven, three phase, star connected, round rotor, sychronous generator with negligible phase winding resistance has a per phase synchronous impedance of j1.3…

19-05-2008 08:05PM

#1

grumps

Closed Accounts Posts: 19 ✭

Join Date: October 2007

Posts: 5

Folks,

I'd be very much appreciative if electrically minded people would be able to shed any light on the following past exam question:

A 722 MVA, 50 Hz, 19kV, steam driven, three phase, star connected, round rotor, sychronous generator with negligible phase winding resistance has a per phase synchronous impedance of j1.3 per unit. The open circuit voltage Eo is adjusted to 1.2 per unit and the machine is connected to a set of infinite bus bars at 19kV. The input power is adjusted to give a torque angle of 20 degrees.

Calculate the real output power and the line current supplied by the machine.
Calculate also the reactive power supplied by the machine under these conditions.

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Comments

#2 19-05-2008 09:50PM

godtabh

Moderators, Science, Health & Environment Moderators Posts: 23,266 Mod ✭✭✭✭

Join Date: April 2005

Posts: 21062

where you given any formula or what not?

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