Q2. Equpment ratings for the five bus power system shown in Fig below are as follows: (30 pts) Generator 1, Gl: 50 MVA,

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Q2 Equpment Ratings For The Five Bus Power System Shown In Fig Below Are As Follows 30 Pts Generator 1 Gl 50 Mva 1 (64.91 KiB) Viewed 21 times

Q2. Equpment ratings for the five bus power system shown in Fig below are as follows: (30 pts) Generator 1, Gl: 50 MVA, 12 kV, X"=0.2 pu Generator 2, G2: 100 MVA, 15 kV, X"=0,2 pu Transformer 1, T1=50 MVA, 10kV Y/138 kVY, X 0 10 pu Transformer 2, T2=100 MVA, 15 kV Delta/138 kVY, X=0.10 pu Each 138 kV line. X=4092 A three phase bolted fault occurs at bus 5, where the pre-fault voltage is 15 kV Neglect pre-fault load current and a) Draw the Positive sequence reactance diagram in per unit on a 100 MVA and 15 kV base in the zone of Generator 2 (b) Determine the Thevenin's equivalent at the fault, the sub-transient fault current in pu and in ka, and contributions to the fault from generator G2 and Transformer T2 sides © Use graph theory to build the Z bus (show all steps) and determine the fault current using Zoom T1 G1 y 47 Mi 2 G25 oi y * T2 4 3