A power system consists of a synchronous generator and a synchronous motor connected via two transformers and a transmission line. Create a per-phase, per-unit equivalent circuit of this power system using a base apparent power of 100 MVA and a base line voltage of the generator G₁ of 13.8 kV. V₁ = 13.8 KV base Sbase 100 MVA G₁ Generator: • 100 MVA Zone 1 13.8 kV (0.1 + j0.9) pu T₁ YY Transformer 1: • 100 MVA ● 13.8/110 kV (0.1 + j0.05) pu Zone 2 L₁=(15+j75) Q T₂ YA Transformer 2: • 50 MVA • 120/14.4 kV Zone 3 (0.1 + j0.05) pu Load (motor): 50 MVA • 13.8 kV ● M₂Y . (0.1 +j1.1) pu

Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A power system consists of a synchronous generator and a synchronous motor connected via
two transformers and a transmission line.
Create a per-phase, per-unit equivalent circuit of this power system using a base apparent
power of 100 MVA and a base line voltage of the generator G₁ of 13.8 kV.
V. = 13.8 kV
base
Sbase=100 MVA
Generator:
• 100 MVA
.
Y(G₁
•
Zone 1
13.8 kV
(0.1 + j0.9) pu
YY
Transformer 1:
100 MVA
•
•
T₁
.
13.8/110 kV
(0.1 + j0.05) pu
Zone 2
L₁ = (15+j75)
T₂
ΥΔ
Transformer 2:
•
.
Zone 3
50 MVA
120/14.4 kV
(0.1 + j0.05) pu
M₂
Y
Load (motor):
50 MVA
• 13.8 kV
(0.1+j1.1) pu
Transcribed Image Text:A power system consists of a synchronous generator and a synchronous motor connected via two transformers and a transmission line. Create a per-phase, per-unit equivalent circuit of this power system using a base apparent power of 100 MVA and a base line voltage of the generator G₁ of 13.8 kV. V. = 13.8 kV base Sbase=100 MVA Generator: • 100 MVA . Y(G₁ • Zone 1 13.8 kV (0.1 + j0.9) pu YY Transformer 1: 100 MVA • • T₁ . 13.8/110 kV (0.1 + j0.05) pu Zone 2 L₁ = (15+j75) T₂ ΥΔ Transformer 2: • . Zone 3 50 MVA 120/14.4 kV (0.1 + j0.05) pu M₂ Y Load (motor): 50 MVA • 13.8 kV (0.1+j1.1) pu
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