Q2/A/ For the three bus power system shown in Fig.(2), all the per unit reactances of its elements are scaled on a common MVA base and they are given as follow : G: 50 MVA, 11 kV, X =0.12p.u. G2: 50 MVA, 11 kV, Xa -0.3 p.u. T: 50 MVA, 11/132kV,X= 0.05 p.u.; T2: 50 MVA, 11/132kV,X=0.08 p.u. Linel: 132kV,X=0.125 pu: Line2: 132 kV, X=0.15 p.u. Line3: 132kV,X=0.25 p.u. For a symmetrical three phase fault occurs at point F find the fault current in amperes? Symmetrical three phase fault NT. T: Rus I Bus 2 Line 1 Line 2 Line 3 Fig.(2) Bus 3

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Q2/A/ For the three bus power system shown in Fig.(2), all the per unit reactances of its elements are
scaled on a common MVA buse and they are given as follow :
G;: 50 MVA, 11 kV, X =0.12p.u.
G2: 50 MVA, I1 kV, Xa -0.3 p.u.
T: 50 MVA, 11/132kV,X= 0.05 p.u.; T2: 50 MVA, 11/132kV,X-0.08 p.u.
Linel: 132kV,X-0.125 pu:
Line2: 132 kV, X=0.15 p.u.
Line3: 132kV,X-0.25 p.u.
For a symmetrical three phase fault occurs at point F find the fault current in amperes?
Symmetrical
three phase fault
ulu
Bus I
Line 1
Bus 2
Line 2
Line 3
Fig.(2)
Bus 3
Transcribed Image Text:Q2/A/ For the three bus power system shown in Fig.(2), all the per unit reactances of its elements are scaled on a common MVA buse and they are given as follow : G;: 50 MVA, 11 kV, X =0.12p.u. G2: 50 MVA, I1 kV, Xa -0.3 p.u. T: 50 MVA, 11/132kV,X= 0.05 p.u.; T2: 50 MVA, 11/132kV,X-0.08 p.u. Linel: 132kV,X-0.125 pu: Line2: 132 kV, X=0.15 p.u. Line3: 132kV,X-0.25 p.u. For a symmetrical three phase fault occurs at point F find the fault current in amperes? Symmetrical three phase fault ulu Bus I Line 1 Bus 2 Line 2 Line 3 Fig.(2) Bus 3
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