Q2/The positive-sequence reactances for the power system shown in Figure are in per unit on a common MVA base. Resistances are neglected and the negative-sequence impedances are assumed to be the same as the positive-sequence impedances. A bolted line-to-line fault occurs between phases b and c at bus 2. Before the fault occurrence, all bus voltages are 1.0 per unit. Obtain the positive sequence bus impedance matrix. Find the fault current, the three-phase bus voltages during fault, and the line currents in each phase. X=j0.05 j0.15 (G₁) T₁ 1 TEO 3 11 j0.6 j0.3 2 T2 j0.05 X=j0.05 BIG 4

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Q2/The positive-sequence reactances for the power system shown in Figure are in per unit on
a common MVA base. Resistances are neglected and the negative-sequence impedances are
assumed to be the same as the positive-sequence
impedances. A bolted line-to-line fault occurs between phases b and c at bus 2. Before the fault
occurrence, all bus voltages are 1.0 per unit. Obtain the positive sequence bus impedance
matrix. Find the fault current, the three-phase bus voltages during fault, and the line currents
in each phase.
T₁ 1
0.15
उह
3
X=j0.05
G₁
j0.6
j0.3
2 T2
j0.05 X=j0.05
G₂
Transcribed Image Text:Q2/The positive-sequence reactances for the power system shown in Figure are in per unit on a common MVA base. Resistances are neglected and the negative-sequence impedances are assumed to be the same as the positive-sequence impedances. A bolted line-to-line fault occurs between phases b and c at bus 2. Before the fault occurrence, all bus voltages are 1.0 per unit. Obtain the positive sequence bus impedance matrix. Find the fault current, the three-phase bus voltages during fault, and the line currents in each phase. T₁ 1 0.15 उह 3 X=j0.05 G₁ j0.6 j0.3 2 T2 j0.05 X=j0.05 G₂
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