If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

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 8:05pm

#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.

0

Comments

#2 19-05-2008 9:50pm

godtabh

Moderators, Science, Health & Environment Moderators Posts: 23,243 Mod ✭✭✭✭

Join Date: April 2005

Posts: 21045

where you given any formula or what not?

0