Consider the figure below which shows the single-line diagram of a small part of a power system. 1 10/0 G₁ 200 MVA 18kV XG1 = 0.120 250 MVA 220/18kV XT1 = 100 Refered to the hv side OHL 200 km x₁=0.04 02/km 3 @ T₂ 180 MVA 220/11kV XT2 = 2002 Refered to the hv side G₂ 150 MVA 11kV XG1 = 0.080 (a) Calculate the impedance of each component in per-unit using the component's rated parameters are base values. (b) Calculate the impedance of each component at a common base power of 250 MVA. (c) Sketch the impedance diagram of the given power system.
Consider the figure below which shows the single-line diagram of a small part of a power system. 1 10/0 G₁ 200 MVA 18kV XG1 = 0.120 250 MVA 220/18kV XT1 = 100 Refered to the hv side OHL 200 km x₁=0.04 02/km 3 @ T₂ 180 MVA 220/11kV XT2 = 2002 Refered to the hv side G₂ 150 MVA 11kV XG1 = 0.080 (a) Calculate the impedance of each component in per-unit using the component's rated parameters are base values. (b) Calculate the impedance of each component at a common base power of 250 MVA. (c) Sketch the impedance diagram of the given power system.
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Transcribed Image Text:QUESTION TWO
Consider the figure below which shows the single-line diagram of a small part of a power
system.
G₁
200 MVA
18kV
XG1 = 0.120
1
to
T₁
250 MVA
220/18kV
Χτι = 10 Ω
Refered to the
hv side
2
OHL
200 km
x₁=0.04 02/km
4
tojo
T₂
180 MVA
220/11kV
Χτz = 20 Ω
Refered to the
hv side
3
G₂
150 MVA
11kV
XG1 = 0.080
(a) Calculate the impedance of each component in per-unit using the component's rated
parameters are base values.
(b) Calculate the impedance of each component at a common base power of 250 MVA.
(c) Sketch the impedance diagram of the given power system.
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