The figure below shows the one-line diagram of a three-phase power system. By selecting a common base of 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedances including the load impedance in per-unit. The data are given as follows: [assume all transformers have the same connection^ so neglect the phase shifts associated with the the transformers] G 2 Line 1 220 kV Line 2 110 kV M Load G: TV 90 MVA M: 50 MVA T2: 40 MVA T3: 40 MVA 7: 40 MVA 66.5 MVA 25 KV 25/225 KV 225/11 KV 25/110 KV 110/11 KV 12 KV x= 0.18 per unit x= 0.10 per unit x = 0.06 per unit x = 0.064 per unit x=0.08 per unit x= 0.185 per unit Lines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVA at 12 kV and 0.7 power factor lagging.
The figure below shows the one-line diagram of a three-phase power system. By selecting a common base of 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedances including the load impedance in per-unit. The data are given as follows: [assume all transformers have the same connection^ so neglect the phase shifts associated with the the transformers] G 2 Line 1 220 kV Line 2 110 kV M Load G: TV 90 MVA M: 50 MVA T2: 40 MVA T3: 40 MVA 7: 40 MVA 66.5 MVA 25 KV 25/225 KV 225/11 KV 25/110 KV 110/11 KV 12 KV x= 0.18 per unit x= 0.10 per unit x = 0.06 per unit x = 0.064 per unit x=0.08 per unit x= 0.185 per unit Lines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVA at 12 kV and 0.7 power factor lagging.
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![The figure below shows the one-line diagram of a three-phase power system. By selecting a common base
of 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedances
including the load impedance in per-unit. The data are given as follows: [assume all transformers have the
same connection ^ so neglect the phase shifts associated with the the transformers]
T₁
2
5
Line 1
220 kV
Line 2
110 kV
3
6
T₂
T₁
4
M
Load
G:
TV. 50 MVA
90 MVA
T2: 40 MVA
T3:
7\:
M:
40 MVA
40 MVA
66.5 MVA
25 KV
25/225
KV
225/11
KV
25/110
KV
110/11
KV
12 KV
x = 0.18 per unit
x = 0.10 per unit
x = 0.06 per unit
x = 0.064 per unit
x = 0.08 per unit
0.185 per unit
Lines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVA
at 12 kV and 0.7 power factor lagging.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa2d19424-98fb-4f9a-95c8-606cd6110e1d%2F2612ca60-bd23-43b2-a6b4-4afa7f7dfc00%2F8k1dgnf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The figure below shows the one-line diagram of a three-phase power system. By selecting a common base
of 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedances
including the load impedance in per-unit. The data are given as follows: [assume all transformers have the
same connection ^ so neglect the phase shifts associated with the the transformers]
T₁
2
5
Line 1
220 kV
Line 2
110 kV
3
6
T₂
T₁
4
M
Load
G:
TV. 50 MVA
90 MVA
T2: 40 MVA
T3:
7\:
M:
40 MVA
40 MVA
66.5 MVA
25 KV
25/225
KV
225/11
KV
25/110
KV
110/11
KV
12 KV
x = 0.18 per unit
x = 0.10 per unit
x = 0.06 per unit
x = 0.064 per unit
x = 0.08 per unit
0.185 per unit
Lines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVA
at 12 kV and 0.7 power factor lagging.
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