In the system shown below, the generator is ideal (Xs = 0) and the magnitude of the load bus voltage, VL is to be held at 110 kV. Working on a system base of 100 MVA and a base voltage of 115 kV in the load circuit: a) b) draw the single-phase equivalent pu reactance diagram, and determine the necessary generator terminal voltage VG (kV).

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2. In the system shown below, the generator is ideal (Xs = 0) and the magnitude of the
load bus voltage, VL is to be held at 110 kV. Working on a system base of 100 MVA
and a base voltage of 115 kV in the load circuit:
a)
b)
draw the single-phase equivalent pu reactance diagram, and
determine the necessary generator terminal voltage VG (kV).
Transformer 1
200 MVA
25 kV : 600 kV
X = 5%
Transformer 2
150 MVA
500 kV: 115 kV
X = 6%
Line
X = 60 N
Load
S = 120 MVA
pf = 0.85 lag
VG
VT1
VT2
VL
Transcribed Image Text:2. In the system shown below, the generator is ideal (Xs = 0) and the magnitude of the load bus voltage, VL is to be held at 110 kV. Working on a system base of 100 MVA and a base voltage of 115 kV in the load circuit: a) b) draw the single-phase equivalent pu reactance diagram, and determine the necessary generator terminal voltage VG (kV). Transformer 1 200 MVA 25 kV : 600 kV X = 5% Transformer 2 150 MVA 500 kV: 115 kV X = 6% Line X = 60 N Load S = 120 MVA pf = 0.85 lag VG VT1 VT2 VL
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