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A three-phase power system consists of a synchronous machine connected through a lossless transmission line to an infinite bus. A fault occurs on the transmission line. The maximum power transfer of this system when there is no fault is 5 pu and the power transfer is 2.5 pu. The power angle curves during the fault and post-fault conditions have peak values of 2

A three-phase power system consists of a synchronous machine connected through a lossless transmission line to an infinite bus. A fault occurs on the transmission line. The maximum power transfer of this system when there is no fault is 5 pu and the power transfer is 2.5 pu. The power angle curves during the fault and post-fault conditions have peak values of 2

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A three-phase power system consists of a synchronous machine connected through a lossless transmission line to an infinite bus. A fault occurs on the transmission line. The maximum power transfer of this system when there is no fault is 5 pu and the power transfer is 2.5 pu. The power angle curves during the fault and post-fault conditions have peak values of 2 pu and 4 pu respectively. Determine the permissible increase in the angular displacement between the voltages at the two ends of the system beyond which the circuit breakers could not clear the fault in time for the system to remain in synchronism.
Transcribed Image Text:A three-phase power system consists of a synchronous machine connected through a lossless transmission line to an infinite bus. A fault occurs on the transmission line. The maximum power transfer of this system when there is no fault is 5 pu and the power transfer is 2.5 pu. The power angle curves during the fault and post-fault conditions have peak values of 2 pu and 4 pu respectively. Determine the permissible increase in the angular displacement between the voltages at the two ends of the system beyond which the circuit breakers could not clear the fault in time for the system to remain in synchronism.
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