Figure 1 shows a three-phase power system network comprises of synchronous generator, transformers, transmission lines and loads while Table 1 shows the ratings of the components. Using per unit analysis, 100 MVA base and 20 kV as the voltage base at the generator, answer the following questions: T2 TLine Load C Load A Load B Figure 1: A simple power system network. Table 1: The power system component ratings G 90 MVA, 20 kV, XG = 120% T1 80 MVA, 20/132 kV, XTI = 16% T2 80 MVA, 132/11 kV, XT2 = 10% TLine 132 kV, XLine = 18 2 Load A 7 MW +j3 Mvar Load B 30 MW+j 15 Mvar Load C 22 MVA, 0.89 power factor leading (a) Calculate the impedance per-unit values of all independent components based on given conditions.

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Figure 1 shows a three-phase power system network comprises of synchronous generator,
transformers, transmission lines and loads while Table 1 shows the ratings of the components.
Using per unit analysis, 100 MVA base and 20 kV as the voltage base at the generator, answer
the following questions:
Ig
T2
TLine
Load C
Load A
Load B
Figure 1: A simple power system network.
Table 1: The power system component ratings
G
90 MVA, 20 kV, XG = 120%
T1
80 MVA, 20/132 kV, XTI = 16%
T2
80 MVA, 132/11 kV, XT2 = 10%
TLine
132 kV, XLine = 18 2
Load A
7 MW +j 3 Mvar
Load B
30 MW +j 15 Mvar
Load C
22 MVA, 0.89 power factor leading
(a)
Calculate the impedance per-unit values of all independent components based on given
conditions.
Transcribed Image Text:Figure 1 shows a three-phase power system network comprises of synchronous generator, transformers, transmission lines and loads while Table 1 shows the ratings of the components. Using per unit analysis, 100 MVA base and 20 kV as the voltage base at the generator, answer the following questions: Ig T2 TLine Load C Load A Load B Figure 1: A simple power system network. Table 1: The power system component ratings G 90 MVA, 20 kV, XG = 120% T1 80 MVA, 20/132 kV, XTI = 16% T2 80 MVA, 132/11 kV, XT2 = 10% TLine 132 kV, XLine = 18 2 Load A 7 MW +j 3 Mvar Load B 30 MW +j 15 Mvar Load C 22 MVA, 0.89 power factor leading (a) Calculate the impedance per-unit values of all independent components based on given conditions.
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