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 : Gi: 50 MVA, 11 kv, Ха -0.12p.u. G: 50 MVA, 11 kV, Xа -0.3 р.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 wW TI wW T: Bus 1 Bus 2 Line 1 Line 2 Line 3 Fig.(2) Bus 3 Q2/B// The positive, negative and zero sequence components of phase a of an unbalanced set of currents are: 19 = -j 1.5 pu ; 1º = -j 1.5 pu ; 19 = -/ 1.5 pu Find the line currents?

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 : Gi: 50 MVA, 11 kv, Ха -0.12p.u. G: 50 MVA, 11 kV, Xа -0.3 р.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 wW TI wW T: Bus 1 Bus 2 Line 1 Line 2 Line 3 Fig.(2) Bus 3 Q2/B// The positive, negative and zero sequence components of phase a of an unbalanced set of currents are: 19 = -j 1.5 pu ; 1º = -j 1.5 pu ; 19 = -/ 1.5 pu Find the line currents?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.19P

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