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Q6: For the system shown in Figure below. Calculate the short circuit curTent for a symmetrical phase fault at point F: use a 100MVA base. T1 115 kV TL 50 km 0.4 Ω/km Reactor T2 Power Sys G2 G1&G...
Transformer TI : 50 MVA, 10 kV Y/138 kV Y, X=0.10 per unit; Transformer T2: 100 MVA, 15 kV D/138 kV Y, X-0.10 per unit; Each 138-kV line: X1-400 A three-phase short circuit occurs at bus 5, where the prefault voltage is 15 kV. Prefault load current is neglected. (a)Draw the positive-sequence reactance diagram in per-unit on a 100-MVA, 15-kV base in the zone of generator G2. Determine: (b) the The'venin equivalent at the fault, (c) the subtransient fault current...