Q7: Generators G and G2 are identical and rated 11 kV, 20 MVA and have a transient reactance of 0.25 pu at own MVA base. The transformers T and T2 are also identical and are rated 11:66 kV, 5 MVA and have a reactance of 0.06 pu to their own MVA base. The line is 50 km long; each conductor has a reactance of 0.848 ohm per km. The three phase fault is assumed at F, 20 km from generator G, as shown in Fig. below. Find the short circuit current. (G) (G2) F T2

Q7: Generators G and G2 are identical and rated 11 kV, 20 MVA and have a transient reactance of 0.25 pu at own MVA base. The transformers T and T2 are also identical and are rated 11:66 kV, 5 MVA and have a reactance of 0.06 pu to their own MVA base. The line is 50 km long; each conductor has a reactance of 0.848 ohm per km. The three phase fault is assumed at F, 20 km from generator G, as shown in Fig. below. Find the short circuit current. (G) (G2) F T2

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

Chapter9: Unsymmetrical Faults

Section: Chapter Questions

Problem 9.5P

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