g5 = 1 i.e. load angle is 31 degrees Q2 (a) Indicate any changes in a stand alone synchronous generators performanceor operating limits for the following changes to the generator design oroperation:(i)A reduction in the synchronous reactance.(ii)An increase in generator speed.(iii)An increase in the rotor current.(iv)An increase in the number of turns in the stator windings.A star connected 3 phase wound field synchronous generator (Xs=4 Q)operates with a 15 kV Excitation voltage at a load angle of 3G5° and isconnected to a 11 kV (phase voltage) grid. Using a combination ofcalculation and scaled phasor diagram determine the resultant linecurrent (A), power factor and total output power (W). Draw the resultantphasor diagram to scale including the resultant line current.(b)(c)The load power is now halved with the Excitation voltage kept constant.Using the phasor diagram drawn in Q2(b) graphically determine the newline current, power factor and load angle.Calculate the maximum theoretical output power for this givenExcitation voltage and grid phase voltage.(d)

Answered: Image /qna-images/answer/38c0c943-8422-492d-89b6-54b04054d95a.jpg

Q2 (a) Indicate any changes in a stand alone synchronous generators performance or operating limits for the following changes to the generator design or operation: (i) A reduction in the synchronous reactance. (ii) An increase in generator speed. (iii) An increase in the rotor current. (iv) An increase in the number of turns in the stator windings.

Q2 (a) Indicate any changes in a stand alone synchronous generators performance or operating limits for the following changes to the generator design or operation: (i) A reduction in the synchronous reactance. (ii) An increase in generator speed. (iii) An increase in the rotor current. (iv) An increase in the number of turns in the stator windings.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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