A synchronous generator is rated at 645 MVA, 24 kV, 0.9 power factor lagging. It has a synchronous reactance of 1,2 ohm. The generator feeds full load at 0,9 power factor with excitation emf E_f=1.99∠37.5o . Assume Base MVA = 645 MVA, Base kV = 24 kV. Calculate load angle for following conditions: (ii) If excitation is reduced by 50% at half real load,

A synchronous generator is rated at 645 MVA, 24 kV, 0.9 power factor lagging. It has a synchronous reactance of 1,2 ohm. The generator feeds full load at 0,9 power factor with excitation emf E_f=1.99∠37.5o . Assume Base MVA = 645 MVA, Base kV = 24 kV. Calculate load angle for following conditions: (ii) If excitation is reduced by 50% at half real load,

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

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.3MCQ: The amplitude of the sinusoidal symmetrical ac component of the three-phase short-circuit current of...

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