A three-phase, 13.8 kV, 10 MVA, 0.8 PF-lagging, 60 Hz two-pole, Y-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. This generator is operating in parallel with a large power system (in nite bus). ONLY ANSWER PART D) a) What is the magnitude of internal voltage Ea at rated conditions? b) What is power angle δ of the generator at rated conditions? c) If the eld current is constant, what is the maximum active power possible out of this generator (taking into account Ra)? How much reserve power does this generator have at full load? d) At the absolute maximum active power possible, how much reactive power will this generator be supplying or consuming? Sketch the corresponding phasor diagram assuming I(f) is still unchanged.
A three-phase, 13.8 kV, 10 MVA, 0.8 PF-lagging, 60 Hz two-pole, Y-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. This generator is operating in parallel with a large power system (in nite bus). ONLY ANSWER PART D) a) What is the magnitude of internal voltage Ea at rated conditions? b) What is power angle δ of the generator at rated conditions? c) If the eld current is constant, what is the maximum active power possible out of this generator (taking into account Ra)? How much reserve power does this generator have at full load? d) At the absolute maximum active power possible, how much reactive power will this generator be supplying or consuming? Sketch the corresponding phasor diagram assuming I(f) is still unchanged.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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A three-phase, 13.8 kV, 10 MVA, 0.8 PF-lagging, 60 Hz two-pole, Y-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. This generator is operating in parallel with a large power system (in nite bus). ONLY ANSWER PART D)
a) What is the magnitude of internal voltage Ea at rated conditions?
b) What is power angle δ of the generator at rated conditions?
c) If the eld current is constant, what is the maximum active power possible out of this generator (taking into account Ra)? How much reserve power does this generator have at full load?
d) At the absolute maximum active power possible, how much reactive power will this generator be supplying or consuming? Sketch the corresponding phasor diagram assuming I(f) is still unchanged.
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