Draw the per-unit impedance diagram of the network shown in Fig. 1, calculated to a common base of 100 MVA. Determine: (i) (ii) The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical sh circuit fault at bus no. 6. The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical sh circuit fault at bus no. 2. T₁ 132kV/33kV 80 MVA X-0.12 pu bus 2 Load 30 km X-0.4 02/km bus 4 T₁ 33kV/11kV 12 MVA X-0.08 pu bus 5 Load bus 1 1800 MVA Fault Level T₂ 132kV/33kV 80 MVA X-0.12 pu Load Load 12 km X-0.24 0/km T₁ 132kV/11kV 60 MVA X-0.1 pu bus 3 20 km X-0.24 02/km Load bus 6

Draw the per-unit impedance diagram of the network shown in Fig. 1, calculated to a common base of 100 MVA. Determine: (i) (ii) The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical sh circuit fault at bus no. 6. The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical sh circuit fault at bus no. 2. T₁ 132kV/33kV 80 MVA X-0.12 pu bus 2 Load 30 km X-0.4 02/km bus 4 T₁ 33kV/11kV 12 MVA X-0.08 pu bus 5 Load bus 1 1800 MVA Fault Level T₂ 132kV/33kV 80 MVA X-0.12 pu Load Load 12 km X-0.24 0/km T₁ 132kV/11kV 60 MVA X-0.1 pu bus 3 20 km X-0.24 02/km Load bus 6

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 7.31P: A three-phase circuit breaker has a 15.5-kV rated maximum voltage, 9.0-kA rated short-circuit...

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Similar questions

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