The single line diagram of a power system is shown below. Load represented as impedance, (13.2) kV voltage It draws 60 MVA power from the system when it is below and (0.9) back power factor. Generators and transformers The related electrical parameters are given below. According to this; a) Calculate all impedances in this given circuit in pu and draw the equivalent impedance diagram of the circuit. (Select the base values ​​as 100 MVA and 13.8 kV.) b) Since the voltage values ​​of the generators are given as E1=1.1∟0° pu and E2=1.25∟10° pu, Calculate the value of the voltage (V1).

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Chapter9: Components For Electric Motors
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The single line diagram of a power system is shown below. Load represented as impedance, (13.2) kV voltage It draws 60 MVA power from the system when it is below and (0.9) back power factor. Generators and transformers The related electrical parameters are given below. According to this;

a) Calculate all impedances in this given circuit in pu and draw the equivalent impedance diagram of the circuit. (Select the base values ​​as 100 MVA and 13.8 kV.)

b) Since the voltage values ​​of the generators are given as E1=1.1∟0° pu and E2=1.25∟10° pu, Calculate the value of the voltage (V1).

 

V2
T1
T2
G1
G2
j80 2
A Y
Y A
Load
40 MVA
X" = 0.1 pu
Generator (G1)
13.2 kV
Generator (G2)
30 MVA
13.2 kV
X"= 0.15 pu
Trafo-1
(T1)
50 MVA
13.8 A - 220 Y kV X = 0.2 pu
Trafo-2
(Т:)
40 MVA
220 Y - 13.8 A kV X= 0.15 pu
Transcribed Image Text:V2 T1 T2 G1 G2 j80 2 A Y Y A Load 40 MVA X" = 0.1 pu Generator (G1) 13.2 kV Generator (G2) 30 MVA 13.2 kV X"= 0.15 pu Trafo-1 (T1) 50 MVA 13.8 A - 220 Y kV X = 0.2 pu Trafo-2 (Т:) 40 MVA 220 Y - 13.8 A kV X= 0.15 pu
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