determine the magnitude of line voltage at each bus
determine the apparent power output in MVA and power factor of the source
Special Assignment #2 ECE 350: Electric Power and Machines Consider the power system below: System Data X1: 3 -Single-Phase, 50 MVA, 13.8 kV/132.8 kV, Xe = 6% X2: 1 -Three-Phase, 200 MVA, 13.8 kV-Y/25 kV-Y, Xe = 4% X3: 3 -Single-Phase, 50 MVA, 230 kV/25 kV, Xe = 5% TL23: ???? ???? 0.25 ?? ??2.5 O L5: ???? ???? 9 ?? ??1 O L4: 120 MVA, 0.95 pf lagging, 24.5 kV System Bases: 200 MVA, 230 kV at bus 2 (a) Determine the line voltage magnitude at each bus. (b) Determine the apparent power output, in MVA, and power factor of the source. DUE: Thursday, April 4, 2013 1 2 3 4 X1 TL23 G1 L4 L5 ? -Y ? -? X2 X3 Y?-Y 5
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