7. Figure 1 shows the electrical power system with rated capacity of S₁-S₂-25 MVA, connected with two step-up transformers 11 kV/66 kV, respectively. The short circuit fault at point 'p' occurs at the outlet of transmission line. Calculate the short circuit current and three phase short circuit capacity occur at the point 'p'. S₂=25 MVA % X=30G. T₁ % XT₂ = 5 w line Transmission 11/66 kVA S₂=25 MVA T₂ CB Gz % Xg2 = 30 % XT2 = 8 11/66 kVA
7. Figure 1 shows the electrical power system with rated capacity of S₁-S₂-25 MVA, connected with two step-up transformers 11 kV/66 kV, respectively. The short circuit fault at point 'p' occurs at the outlet of transmission line. Calculate the short circuit current and three phase short circuit capacity occur at the point 'p'. S₂=25 MVA % X=30G. T₁ % XT₂ = 5 w line Transmission 11/66 kVA S₂=25 MVA T₂ CB Gz % Xg2 = 30 % XT2 = 8 11/66 kVA
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 7.3MCQ: The amplitude of the sinusoidal symmetrical ac component of the three-phase short-circuit current of...
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Question
![7. Figure 1 shows the electrical power system with rated capacity of S₁ S₂=25 MVA,
connected with two step-up transformers 11 kV/66 kV, respectively. The short
circuit fault at point 'p' occurs at the outlet of transmission line. Calculate the short
circuit current and three phase short circuit capacity occur at the point 'p'.
S₁=25 MVA
% X=30G₁
T,
% Xr₁ = 5
w
line
Transmission
11/66 kVA
S₂ 25 MVA
T₂
CB
G₂ % Xg2 = 30
% X12 = 8
11/66 kVA](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feddb2439-091e-48ee-a896-89278508f0c9%2F1150362c-306b-4e18-b46f-3a825e29d434%2F8a50a3a_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7. Figure 1 shows the electrical power system with rated capacity of S₁ S₂=25 MVA,
connected with two step-up transformers 11 kV/66 kV, respectively. The short
circuit fault at point 'p' occurs at the outlet of transmission line. Calculate the short
circuit current and three phase short circuit capacity occur at the point 'p'.
S₁=25 MVA
% X=30G₁
T,
% Xr₁ = 5
w
line
Transmission
11/66 kVA
S₂ 25 MVA
T₂
CB
G₂ % Xg2 = 30
% X12 = 8
11/66 kVA
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