Q4. The open-circuit and short-circuit test readings for a three-phase, Y-connected, 1 MVA, 2 kV, 50Hz synchronous generator is: If (A) 10 20 25 30 40 Eoc (V) 750 1500 1760 2000 2350 Isc (A) 200 250 300 The effective armature resistance is 0.250. Determine: I- Draw the equivalent circuit and determine the saturated and unsaturated synchronous impedance. II- Find the voltage regulation if the machine delivers 80% of its full-load at rated voltage and 0.866 lagging power factor.

Q4. The open-circuit and short-circuit test readings for a three-phase, Y-connected, 1 MVA, 2 kV, 50Hz synchronous generator is: If (A) 10 20 25 30 40 Eoc (V) 750 1500 1760 2000 2350 Isc (A) 200 250 300 The effective armature resistance is 0.250. Determine: I- Draw the equivalent circuit and determine the saturated and unsaturated synchronous impedance. II- Find the voltage regulation if the machine delivers 80% of its full-load at rated voltage and 0.866 lagging power factor.

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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