(2)A 20 MVA, 3-phase, star-connected, 50HZ, salient pole synchronous generator with X =1 pu, X = 0.65 pu, and negligible armature resistance is delivering 15MW at power-factor 0.8 lag to an 11kV, 50HZ system. Find the load angle d and per-unit excitation voltage E, under these conditions.

(2)A 20 MVA, 3-phase, star-connected, 50HZ, salient pole synchronous generator with X =1 pu, X = 0.65 pu, and negligible armature resistance is delivering 15MW at power-factor 0.8 lag to an 11kV, 50HZ system. Find the load angle d and per-unit excitation voltage E, under these conditions.

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

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.3P

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Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

Electric Machines2

(2)A 20 MVA, 3-phase, star-connected, 50HZ, salient pole synchronous generator with
X; =1 pu, X = 0.65 pu, and negligible armature resistance is delivering 15MW at power-factor
0.8 lag to an 11kV, 50HZ system. Find the load angle d and per-unit excitation voltage E', under
these conditions.

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