A power generating facility has a gas turbine driven, three-phase, 100 MVA, 13.8 kV, 60 Hz, star connected synchronous generator with a synchronous impedance of 0.15 + j1.05 0/phase connected to its infinite bus. During off-peak hours, the generator's excitation voltage is set to 14.6 kV and it supplies a load current to the 13.8 kV infinite bus at unity power factor. Ignoring the armature resistance, and at unity conditions Calculate the expected load current and load angle for this condition ii. Sketch the phasor diagram for this condition iii. Calculate the power being supplied by the generator i. ii. iii.

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
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.24P: A source supplies power to the following three loads connected in parallel: (1) a lighting load...
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CT - 2 :Solve all parts.

A power generating facility has a gas turbine driven, three-phase, 100 MVA, 13.8 kV, 60 Hz, star
connected synchronous generator with a synchronous impedance of 0.15 + j1.05 0/phase connected to
its infinite bus.
During off-peak hours, the generator's excitation voltage is set to 14.6 kV and it supplies a load current
to the 13.8 kV infinite bus at unity power factor.
Ignoring the armature resistance, and at unity conditions
Calculate the expected load current and load angle for this condition
ii. Sketch the phasor diagram for this condition
iii. Calculate the power being supplied by the generator
i.
ii.
iii.
Transcribed Image Text:A power generating facility has a gas turbine driven, three-phase, 100 MVA, 13.8 kV, 60 Hz, star connected synchronous generator with a synchronous impedance of 0.15 + j1.05 0/phase connected to its infinite bus. During off-peak hours, the generator's excitation voltage is set to 14.6 kV and it supplies a load current to the 13.8 kV infinite bus at unity power factor. Ignoring the armature resistance, and at unity conditions Calculate the expected load current and load angle for this condition ii. Sketch the phasor diagram for this condition iii. Calculate the power being supplied by the generator i. ii. iii.
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