Reconsider Problem 3.29. If V a η , V b η and V c η are a negative-sequence set, how would the voltage and current relationships change? (a) If C 1 is the complex positive-sequence voltage gain in Problem 3.29 and (b) if C 2 is the negative sequence complex voltage gain, express the relationship between C 1 and C 2
Reconsider Problem 3.29. If V a η , V b η and V c η are a negative-sequence set, how would the voltage and current relationships change? (a) If C 1 is the complex positive-sequence voltage gain in Problem 3.29 and (b) if C 2 is the negative sequence complex voltage gain, express the relationship between C 1 and C 2
Solution Summary: The author explains the relationship between voltage and current if C_1 are complex positive-sequence voltage gain.
Reconsider Problem 3.29. If
V
a
η
,
V
b
η
and
V
c
η
are a negative-sequence set, how would the voltage and current relationships change?
(a) If
C
1
is the complex positive-sequence voltage gain in Problem 3.29 and (b) if
C
2
is the negative sequence complex voltage gain, express the relationship between
C
1
and
C
2
B) A 60-Hz generator is supply ing 60% of P max to an infinite bus through a reactive network.
A fault occurs which increases the reactance of the network between the generator internal
voltage and the infinite bus by 400%. When the fault is cleared, the maximum power that can
be delivered is 80% of the original maximum value. Determine the critical clearing angle for
the condition described.
Q3)
A: A generator operating at 50 Hz delivers 1 pu power to an infinite bus through a transmission
circuit in which resistance is ignored. A fault takes place reducing the maximum powe transferable
to 0.5 pu whereas before the fault, this power was 2.0 pu and after the clearance of the fault, it is
1.5 pu. By the use of equal area criterion, determine the critical clearing angle.
4. For the periodic signal shown in Fig. 4;
a) Find the exponential Fourier Series for y(t).
b) Use Parseval's Theorem to compute the total power contained in the 4th harmonic and all higher
harmonics.
2+
y(t)
+
-2л
-л
0
2л
Зл
4л
Fig. 4
Chapter 3 Solutions
MindTap Engineering for Glover/Overbye/Sarma's Power System Analysis and Design, 6th Edition, [Instant Access], 1 term (6 months)
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