Neglecting resistance, transformer phase shift, and magnetizing reac- tance, draw the equivalent reactance diagram. Use a base of 100 MVA and 500 kV for the 50-ohm line. Determine the per-unit reactances. 2 j50 N T2 T4 T3 | 25 2 | 25 N

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.39P: The leakage reactance of a three-phase, 300-MVA,230Y/23-kV transformer is 0.06 per unit based on its...
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Neglecting resistance, transformer phase shift, and magnetizing reac-
tance, draw the equivalent reactance diagram. Use a base of 100 MVA
and 500 kV for the 50-ohm line. Determine the per-unit reactances.
50 N
T2
T4
T3
| 25 2
| 25 N
A
T5
3
Transcribed Image Text:Neglecting resistance, transformer phase shift, and magnetizing reac- tance, draw the equivalent reactance diagram. Use a base of 100 MVA and 500 kV for the 50-ohm line. Determine the per-unit reactances. 50 N T2 T4 T3 | 25 2 | 25 N A T5 3
1000 MVA, 18 kV, X" =
0.2 per unit
Generator 1:
Generator 2:
1000 MVA, 18 kV, X" = 0.2 p.u.
Synchronous motor 3:
1500 MVA, 20 kV, X" = 0.2 p.u.
Three-phase A-Y transformers
T1,T2, T3, T4:
1000 MVA, 500 kV Y/20 kV A,
X = 0.1 p.u.
Three-phase Y-Y transformer T3:
1500 MVA, 500 kV Y/20 kV Y,
X = 0.1 p.u.
Transcribed Image Text:1000 MVA, 18 kV, X" = 0.2 per unit Generator 1: Generator 2: 1000 MVA, 18 kV, X" = 0.2 p.u. Synchronous motor 3: 1500 MVA, 20 kV, X" = 0.2 p.u. Three-phase A-Y transformers T1,T2, T3, T4: 1000 MVA, 500 kV Y/20 kV A, X = 0.1 p.u. Three-phase Y-Y transformer T3: 1500 MVA, 500 kV Y/20 kV Y, X = 0.1 p.u.
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