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A transformer rated at 30 MVA and having a reactance of 0.05 per unit (pu) is connected to the bus-bar of a transformer station which is supplied through two 33 kV feeders each having an impedance of (1+j2) Ohm. One of the feeders is connected to a generating station with plant rated at 60 MVA connected to its bus-bars having reactance of 0.1 pu and the other feeder to a station with 80 MVA of generating plant with a reactance of 0.15 pu. Calculate the MVA supplied to the three-phase fault occurring between the secondary terminals of the transformer. Select base value of 100 MVA. +.L plant in per unit on

A transformer rated at 30 MVA and having a reactance of 0.05 per unit (pu) is connected to the bus-bar of a transformer station which is supplied through two 33 kV feeders each having an impedance of (1+j2) Ohm. One of the feeders is connected to a generating station with plant rated at 60 MVA connected to its bus-bars having reactance of 0.1 pu and the other feeder to a station with 80 MVA of generating plant with a reactance of 0.15 pu. Calculate the MVA supplied to the three-phase fault occurring between the secondary terminals of the transformer. Select base value of 100 MVA. +.L plant in per unit on

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A transformer rated at 30 MVA and having a reactance of 0.05 per unit (pu) is connected to the bus-bar of a transformer station which is supplied through two 33 kV feeders each having an impedance of (1+j2) Ohm. One of the feeders is connected to a generating station with plant rated at 60 MVA connected to its bus-bars having reactance of 0.1 pu and the other feeder to a station with 80 MVA of generating plant with a reactance of 0.15 pu. Calculate the MVA supplied to the three-phase fault occurring between the secondary terminals of the transformer. Select base value of 100 MVA. +.L plant in per unit on
Transcribed Image Text:A transformer rated at 30 MVA and having a reactance of 0.05 per unit (pu) is connected to the bus-bar of a transformer station which is supplied through two 33 kV feeders each having an impedance of (1+j2) Ohm. One of the feeders is connected to a generating station with plant rated at 60 MVA connected to its bus-bars having reactance of 0.1 pu and the other feeder to a station with 80 MVA of generating plant with a reactance of 0.15 pu. Calculate the MVA supplied to the three-phase fault occurring between the secondary terminals of the transformer. Select base value of 100 MVA. +.L plant in per unit on
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