A three-phase, 60 Hz synchronous generator in Fig. 1 delivers 0.9 per-unit real power at 1.08 per unit terminal voltage to an infinite bus with voltage of 1.0 pu. The reactance data for the power system is given in per unit on a common base and shown in Fig. 1. Determine: a) the reactive power output at the terminal of the generator and reactive power delivered to the infinite bus; b) the generator internal voltage (E′);
A three-phase, 60 Hz synchronous generator in Fig. 1 delivers 0.9 per-unit real power at 1.08 per unit terminal voltage to an infinite bus with voltage of 1.0 pu. The reactance data for the power system is given in per unit on a common base and shown in Fig. 1. Determine: a) the reactive power output at the terminal of the generator and reactive power delivered to the infinite bus; b) the generator internal voltage (E′);
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter9: Components For Electric Motors
Section: Chapter Questions
Problem 14RQ
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2) A three-phase, 60 Hz synchronous generator in Fig. 1 delivers 0.9 per-unit real power at 1.08 per
unit terminal voltage to an infinite bus with voltage of 1.0 pu. The reactance data for the power
system is given in per unit on a common base and shown in Fig. 1. Determine:
a) the reactive power output at the terminal of the generator and reactive power delivered to
the infinite bus;
b) the generator internal voltage (E′);
c) determine and plot an equation for electrical power delivered by the generator to the infinite
bus versus angle δ.
Note: E′ is internal voltage behind transient reactance x′d
Transcribed Image Text:B12
X12=0.20
B21
X7=0.1
E'Z8°
V
(3
(8)
X13=0.10
X32=0.20
x'a=0.3
Vr
Infinite
bus
B13
B23
Figure 1: Problem 2: one-line diagram
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