2.2. The figure below shows a radial transmission system with a generator having a per-unit voltage of 1.3090 pu. The load demand is 68.3 MW at a power factor of 0.9 lagging. Use the nameplate values of Transformer 2 as base values and calculate the following: Transformer 1 Transformer 2 ot LINE LOAD 88/132 kV 132/22kV 96 MVA X = 11% 150 MVA X = 9% 21.Load current (A). 22.Base current (A). 23.Per unit current.

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The module is Energy systems 3

2.2. The figure below shows a radial transmission system with a generator having a
per-unit voltage of 1.3090 p.u. The load demand is 68.3 MW at a power factor of 0.9
lagging. Use the nameplate values of Transformer 2 as base values and calculate the
following:
Transformer 1
Transformer 2
LINE
LOAD
88/132 kV
150 MVA
132/22kV
96 MVA
X = 9%
X = 11%
21.Load current (A).
22. Base current (A).
23.Per unit current.
24. Terminal voltage of the generator (kV).
25. Per unit impedance of transformer 1.
26. Per unit voltage of the line.
27.Per unit impedance of the line.
28. Reactance of the transmission line when the load consumes full-load (N).
Transcribed Image Text:2.2. The figure below shows a radial transmission system with a generator having a per-unit voltage of 1.3090 p.u. The load demand is 68.3 MW at a power factor of 0.9 lagging. Use the nameplate values of Transformer 2 as base values and calculate the following: Transformer 1 Transformer 2 LINE LOAD 88/132 kV 150 MVA 132/22kV 96 MVA X = 9% X = 11% 21.Load current (A). 22. Base current (A). 23.Per unit current. 24. Terminal voltage of the generator (kV). 25. Per unit impedance of transformer 1. 26. Per unit voltage of the line. 27.Per unit impedance of the line. 28. Reactance of the transmission line when the load consumes full-load (N).
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