Figure 8.26 shows a single-line diagram of a three-phase, interconnected generator- reactor system, in which the given per-unit reactances are based on the ratings of the individual pieces of equipment. If a three-phase short-circuit occurs at fault point F, obtain the fault MVA and fault current in kA, if the pre-fault busbar line-to-line volt- age is 13.2 kV. Choose 100 MVA as the base MVA for the system. 40 MVA 0.15 per unit 20 MVA 40 MVA 0.1 per unit 0.15 per unit G, G2 G3 X, X2 20 MVA 16 MVA 0.05 per unit 0.04 per unit

Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Figure 8.26 shows a single-line diagram of a three-phase, interconnected generator-
reactor system, in which the given per-unit reactances are based on the ratings of the
individual pieces of equipment. If a three-phase short-circuit occurs at fault point F,
obtain the fault MVA and fault current in kA, if the pre-fault busbar line-to-line volt-
age is 13.2 kV. Choose 100 MVA as the base MVA for the system.
20 MVA
40 MVA
40 MVA
0.1 per unit
0.15 per unit
0.15 per unit
G,
G2
G3
X,
X2
20 MVA
16 MVA
0.05 per unit
0.04 per unit
Transcribed Image Text:Figure 8.26 shows a single-line diagram of a three-phase, interconnected generator- reactor system, in which the given per-unit reactances are based on the ratings of the individual pieces of equipment. If a three-phase short-circuit occurs at fault point F, obtain the fault MVA and fault current in kA, if the pre-fault busbar line-to-line volt- age is 13.2 kV. Choose 100 MVA as the base MVA for the system. 20 MVA 40 MVA 40 MVA 0.1 per unit 0.15 per unit 0.15 per unit G, G2 G3 X, X2 20 MVA 16 MVA 0.05 per unit 0.04 per unit
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