G1 T1 BUS1 5MVA 10/110kV 30%X BUS3 T3 10MVA 110/4.16kV 30%X M5MVA 4KV 18%X G2 22 T2 3MVA 4.16/110kV 10%X BUS2 BUS4 A three phase, four-bus system is shown at figure 2. The transmission line per-unit impedances are as follows: Rating (MVA) VOLTAGE (KV) IMPEDANCE (pu) LINE 1-2 100 110 0.01+j0.5 1-3 100 110 0.1+j2 2-3 100 110 0.15+j3 2-4 100 110 0.1+j2 3-4 100 110 0.01+j0.5 Generator 1 has a nameplate rating of 10MVA, 10kV with 20%X and generator 2 has a nameplate rating of 5MVA, 4.16kV with 8%X. Including motor contribution, if the pre-fault voltage at the terminals of the motor is 4kV, determine: (a) the symmetrical fault at the terminals of the motor in Amperes; (b) the short circuit MVA at the terminals of the motor.
G1 T1 BUS1 5MVA 10/110kV 30%X BUS3 T3 10MVA 110/4.16kV 30%X M5MVA 4KV 18%X G2 22 T2 3MVA 4.16/110kV 10%X BUS2 BUS4 A three phase, four-bus system is shown at figure 2. The transmission line per-unit impedances are as follows: Rating (MVA) VOLTAGE (KV) IMPEDANCE (pu) LINE 1-2 100 110 0.01+j0.5 1-3 100 110 0.1+j2 2-3 100 110 0.15+j3 2-4 100 110 0.1+j2 3-4 100 110 0.01+j0.5 Generator 1 has a nameplate rating of 10MVA, 10kV with 20%X and generator 2 has a nameplate rating of 5MVA, 4.16kV with 8%X. Including motor contribution, if the pre-fault voltage at the terminals of the motor is 4kV, determine: (a) the symmetrical fault at the terminals of the motor in Amperes; (b) the short circuit MVA at the terminals of the motor.
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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Question
Please answer this diligently. Other answers in the internet seems wrong. Please help me understand and solve this problem. I'll give a like. Thanks!
Isc = __________; MVAsc = __________
Transcribed Image Text:G1
T1
BUS1
5MVA
10/110kV
30%X
BUS3
T3
10MVA
110/4.16kV
30%X
M5MVA
4KV
18%X
G2
22
T2
3MVA
4.16/110kV
10%X
BUS2
BUS4
Transcribed Image Text:A three phase, four-bus system is shown at figure 2. The transmission line per-unit impedances are as
follows:
Rating (MVA) VOLTAGE (KV) IMPEDANCE (pu)
LINE
1-2
100
110
0.01+j0.5
1-3
100
110
0.1+j2
2-3
100
110
0.15+j3
2-4
100
110
0.1+j2
3-4
100
110
0.01+j0.5
Generator 1 has a nameplate rating of 10MVA, 10kV with 20%X and generator 2 has a nameplate rating
of 5MVA, 4.16kV with 8%X. Including motor contribution, if the pre-fault voltage at the terminals of the
motor is 4kV, determine: (a) the symmetrical fault at the terminals of the motor in Amperes; (b) the
short circuit MVA at the terminals of the motor.
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