For the following single line diagram of a three-phase system, a three-phase fault occurs at point P and just before the fault the line voltage is 18 kV at P. Find out the transient fault current in pu and original value at point P. Take, the given kVA and kV of the G1 as the new base. [hint: the transient and sub-transient reactances of the synchronous generators are assumed to be same. But for the motors, assume that the transient one is 1.7 times of the sub-transient reactance.]
For the following single line diagram of a three-phase system, a three-phase fault occurs at point P and just before the fault the line voltage is 18 kV at P. Find out the transient fault current in pu and original value at point P. Take, the given kVA and kV of the G1 as the new base. [hint: the transient and sub-transient reactances of the synchronous generators are assumed to be same. But for the motors, assume that the transient one is 1.7 times of the sub-transient reactance.]
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...
Related questions
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 the following single line diagram of a three-phase system, a three-phase fault occurs at
point P and just before the fault the line voltage is 18 kV at P. Find out the transient fault
current in pu and original value at point P. Take, the given kVA and kV of the G1 as the
new base.
[hint: the transient and sub-transient reactances of the synchronous generators are assumed
to be same. But for the motors, assume that the transient one is 1.7 times of the sub-transient
reactance.]
20,000 KV A
6.9KV
5メ
G1
7000 KVA
5 KV
14%
Tz
11/33KV
33/6.9 kV
lond 5tj8 2
G2
load
20000K VA
15000 KVA
10%
12%
25,000 KVA
6.9KV
8/%
as orebtransient
[AH the mpedances are given
per-unit valeues)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffbde8edf-1377-4927-a1da-d9d2da5c7476%2Fa53db9e0-aedc-40c3-9aea-04501bd8737a%2F9csia1w_processed.png&w=3840&q=75)
Transcribed Image Text:For the following single line diagram of a three-phase system, a three-phase fault occurs at
point P and just before the fault the line voltage is 18 kV at P. Find out the transient fault
current in pu and original value at point P. Take, the given kVA and kV of the G1 as the
new base.
[hint: the transient and sub-transient reactances of the synchronous generators are assumed
to be same. But for the motors, assume that the transient one is 1.7 times of the sub-transient
reactance.]
20,000 KV A
6.9KV
5メ
G1
7000 KVA
5 KV
14%
Tz
11/33KV
33/6.9 kV
lond 5tj8 2
G2
load
20000K VA
15000 KVA
10%
12%
25,000 KVA
6.9KV
8/%
as orebtransient
[AH the mpedances are given
per-unit valeues)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,