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voGXYM-Lecture13

voGXYM-Lecture13 - Power Flow in a SM Generator Pout 3V I A...

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Page 1 Fundamentals of Power Systems Lecture 13 1 Power Flow in a SM - Generator 3 cos( ) I T out A P V I 3 sin( ) I T out A Q V I 3 sin( ) T out T L Q V I 3 cos( ) T out T L P V I Reactive power Note: T is the phase angle between armature voltage V I and armature current I A . It is NOT the angle between V T and I L ! Fundamentals of Power Systems Lecture 13 2 Power Equation of the SM (neglected R A ) out conv P P P By neglecting R A => 3 sin( ) I G A S V E P X sin( ) cos( ) G T A A S E I X Note: The torque angle is G is different from the phase angle T between armature voltage V I and armature current I A , I.e. G z T ! 3 sin( ) A m S V E X I G W Z torque angle
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Page 2 Fundamentals of Power Systems
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