Consider the power system below:
X2
38
Y-Y
G1
X1
38
?-?
5
L5
TL23
X3
38
? - ?
L4
2
3
4
1
System Data
X1:
X2:
X3:
TL23:
L5:
L4:
Zs = 0.25 + j2.5 ?
S
Z = 9 + j1 ?
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.
3 - Single-Phase, 50 MVA, 13.8 kV/132.8 kV, $X_e$ = 6%
1 - Three-Phase, 200 MVA, 13.8 kV-Y/25 kV-Y, $X_e$ = 4%
3 - Single-Phase, 50 MVA, 230 kV/25 kV, $X_e$ = 5%