PROBLEM – 01
A three phase transmission line operating at 10 kV and having a resistance of 1 ohms and reactance of 4 ohms is connected to the generating station bus-bars through 5 MVA step-up transformer having a reactance of 5%. The bus bars are supplied by a 10 MVA alternator having 10% reactance.
Calculate the short-circuit kVA fed to the symmetrical fault between phases if it occurs (i) at bus one (ii) at bus two (iii) at bus three.
A three phase transmission line operating at 10 kV and having a resistance of 1 ohms and reactance of 4 ohms is connected to the generating station bus-bars through 5 MVA step-up transformer having a reactance of 5%. The bus bars are supplied by a 10 MVA alternator having 10% reactance.
Calculate the short-circuit kVA fed to the symmetrical fault between phases if it occurs (i) at bus one (ii) at bus two (iii) at bus three.
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