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Two identical synchronous machines, each rated 60 MVA and 15 kV with a subtransient reactance of 0.1 pu., are a line of reactance 0.1 pu. on the base of the machine rating. One machine is acting as a synchronous generator, while the other is wolking as a motor drawing 40 MW at 0.8 pf. leading with a terminal voltage of 14.5 kV, when a symmetrical three-fault occurs at the motor terminals. Determine the subtransient currents in the generator, the motor, and the fault by using the internal voltages of the machines Choose a base of 60 M VA and 15 k V in the generator circuit.

Two identical synchronous machines, each rated 60 MVA and 15 kV with a subtransient reactance of 0.1 pu., are a line of reactance 0.1 pu. on the base of the machine rating. One machine is acting as a synchronous generator, while the other is wolking as a motor drawing 40 MW at 0.8 pf. leading with a terminal voltage of 14.5 kV, when a symmetrical three-fault occurs at the motor terminals. Determine the subtransient currents in the generator, the motor, and the fault by using the internal voltages of the machines Choose a base of 60 M VA and 15 k V in the generator circuit.

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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Two identical synchronous machines, each rated 60 MVA and 15 kV with a subtransient reactance of 0.1 pu., are a line of reactance 0.1 pu. on the base of the machine rating. One machine is acting as a synchronous generator, while the other is wolking as a motor drawing 40 MW at 0.8 pf. leading with a terminal voltage of 14.5 kV, when a symmetrical three-fault occurs at the motor terminals. Determine the subtransient currents in the generator, the motor, and the fault by using the internal voltages of the machines Choose a base of 60 M VA and 15 k V in the generator circuit.
Transcribed Image Text:Two identical synchronous machines, each rated 60 MVA and 15 kV with a subtransient reactance of 0.1 pu., are a line of reactance 0.1 pu. on the base of the machine rating. One machine is acting as a synchronous generator, while the other is wolking as a motor drawing 40 MW at 0.8 pf. leading with a terminal voltage of 14.5 kV, when a symmetrical three-fault occurs at the motor terminals. Determine the subtransient currents in the generator, the motor, and the fault by using the internal voltages of the machines Choose a base of 60 M VA and 15 k V in the generator circuit.
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