4,(1)(iv)A 33 kV, 3-phase, star-connected synchronous generatorwith synchronous impedance of 1.4 0/phase is delivering240 MW at unity power factor to a 33 kV grid.Calculate the following:The phase voltage and phase current.The voltage generated by the synchronous generator.If the excitation is increased by 25 %, then the turbine powerdriving the generator is increased till the machine delivers280 MW.Calculate the new voltage generated by the synchronousgenerator,Calculate the new current and power factor.

Given data:Line voltage= 33 kV, synchronous reactance,, Output power, P=240 MW, pf=To solve the…

(1) A 33 kV, 3-phase, star-connected synchronous generator with synchronous impedance of 1.4 2/phase is delivering 240 MW at unity power factor to a 33 kV grid. Calculate the following: The phase voltage and phase current. The voltage generated by the synchronous generator.

(1) A 33 kV, 3-phase, star-connected synchronous generator with synchronous impedance of 1.4 2/phase is delivering 240 MW at unity power factor to a 33 kV grid. Calculate the following: The phase voltage and phase current. The voltage generated by the synchronous generator.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Compensation Techniques

The compensation techniques are the methods that are employed in the electrical control systems to enhance the performance of the system. The performance are generally affected by the factors like lag in the compensating devices, slow response of the system of the components like sensors used in the control system. The basic compensation technique involves lag compensation, lead compensation or the combination of the both.

Question

4,
(1)
(iv)
A 33 kV, 3-phase, star-connected synchronous generator
with synchronous impedance of 1.4 0/phase is delivering
240 MW at unity power factor to a 33 kV grid.
Calculate the following:
The phase voltage and phase current.
The voltage generated by the synchronous generator.
If the excitation is increased by 25 %, then the turbine power
driving the generator is increased till the machine delivers
280 MW.
Calculate the new voltage generated by the synchronous
generator,
Calculate the new current and power factor.

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