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 7.32P

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