A 3-phase 33 kV, 37.5 MVA alternator is connected to a earth fault on one phase at the remote end. The positive of the alternator are 0.18, 0.12 and 0.1 per unit of its ratin
A 3-phase 33 kV, 37.5 MVA alternator is connected to a earth fault on one phase at the remote end. The positive of the alternator are 0.18, 0.12 and 0.1 per unit of its ratin
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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![A 3-phase 33 kV, 37.5 MVA alternator is connected to a 33 kV overhead line which develops an
earth fault on one phase at the remote end. The positive, negative and zero sequence reactances
of the alternator are 0.18, 0.12 and 0.1 per unit of its rating while those of the line are 6.3, 6.3 and
12.6 ohm per conductor. Find (a) fault current (b) line to neutral voltages at alternator terminals.
= 13 20KV
an
(a) I 1.555 kA (b) V
[Von = 18 -119.16° kV, V, = 18 119.16° kVJ
%3D
%3D
en](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F32b05224-a24a-46ca-bb49-95c97f2a5fe1%2Fe480d30b-ff1d-4328-8fab-364e09a9d5bf%2Fmj5xm7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A 3-phase 33 kV, 37.5 MVA alternator is connected to a 33 kV overhead line which develops an
earth fault on one phase at the remote end. The positive, negative and zero sequence reactances
of the alternator are 0.18, 0.12 and 0.1 per unit of its rating while those of the line are 6.3, 6.3 and
12.6 ohm per conductor. Find (a) fault current (b) line to neutral voltages at alternator terminals.
= 13 20KV
an
(a) I 1.555 kA (b) V
[Von = 18 -119.16° kV, V, = 18 119.16° kVJ
%3D
%3D
en
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