For double line to ground faultoccurs at bus q, the neutralcurrent is equal to -j6.97898 p.u.What the value of the change inthe neutral current if thegenerators are operated at 90%of rated values (i.e. new value/old.value)10.9240.881.050.950.9 O

Double line to ground Fault: when two lines get interconnected to each other through the Ground…

Answered: generators are operated at 90% of rated…

Engineering

Electrical Engineering

generators are operated at 90% of rated values (i.e. new value/old .value) 1 0.924 0.88 O 1.05 0.95 0.9

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.15P

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Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

For double line to ground fault
occurs at bus q, the neutral
current is equal to -j6.97898 p.u.
What the value of the change in
the neutral current if the
generators are operated at 90%
of rated values (i.e. new value/old
.value)
1
0.924
0.88
1.05
0.95
0.9 O

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