A 12 MVA, 132/6.6 kV, transformer having a reactance of 0.15 pu is fed from an infinite bus. The transformer feeds two motor each 6 MVA, 6.6 kV. Each motors has a transient reactance of 0.14 pu and a subtransient reactance of 0.30 pu based on its own rating. A three phase balanced fault occurs at the terminals of one motor as shown in the figure below. Find the subtransient fault current and subtransient current in breaker. (M1 132/6.6 KV СВ 38 CB Infinite Bus M2 Fault
A 12 MVA, 132/6.6 kV, transformer having a reactance of 0.15 pu is fed from an infinite bus. The transformer feeds two motor each 6 MVA, 6.6 kV. Each motors has a transient reactance of 0.14 pu and a subtransient reactance of 0.30 pu based on its own rating. A three phase balanced fault occurs at the terminals of one motor as shown in the figure below. Find the subtransient fault current and subtransient current in breaker. (M1 132/6.6 KV СВ 38 CB Infinite Bus M2 Fault
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 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...
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![A 12 MVA, 132/6.6 kV, transformer having a reactance of 0.15 pu is fed from an infinite bus. The
transformer feeds two motor each 6 MVA, 6.6 kV. Each motors has a transient reactance of 0.14
pu and a subtransient reactance of 0.30 pu based on its own rating. A three phase balanced fault
occurs at the terminals of one motor as shown in the figure below. Find the subtransient fault
current and subtransient current in breaker.
M1)
132/6.6 KV
СВ
38
CB
Infinite
Bus
M2
Fault](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa04eed6c-f35d-4933-b687-031de2758abc%2Fcfe52a38-2d2a-4fc8-bef9-2644cbb97f54%2F0mcsn0d_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A 12 MVA, 132/6.6 kV, transformer having a reactance of 0.15 pu is fed from an infinite bus. The
transformer feeds two motor each 6 MVA, 6.6 kV. Each motors has a transient reactance of 0.14
pu and a subtransient reactance of 0.30 pu based on its own rating. A three phase balanced fault
occurs at the terminals of one motor as shown in the figure below. Find the subtransient fault
current and subtransient current in breaker.
M1)
132/6.6 KV
СВ
38
CB
Infinite
Bus
M2
Fault
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