17 A3-phase generator rated 3000 KVA, 20 kV, 900 r/min, 60 Hz delivers power to a 2400 KVA, 16 kV load having a lagging power factor of 0.8. If the synchronous reactance is 100 N, calculate the value of E, per phase.
17 A3-phase generator rated 3000 KVA, 20 kV, 900 r/min, 60 Hz delivers power to a 2400 KVA, 16 kV load having a lagging power factor of 0.8. If the synchronous reactance is 100 N, calculate the value of E, per phase.
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Question
Number 17
![NCHRONOUS GENERATORS
383
kept
Calculate
age and
a. The synchronous impedance Z, per phase
b. The total resistance of the circuit, per
phase
c. The total reactance of the circuit, per
phase
d. The line current
reac-
lo sgs e. The line-to-neutral voltage across the
w the
load
d ex-
f. The line voltage across the load
g. The power of the turbine driving the
alternator
eters.
xcitation
s. Using
h. The phase angle between E, and the
voltage across the load
how the
17
A 3-phase generator rated 3000 KVA, 20 kV,
900 r/min, 60 Hz delivers power to a 2400
KVA, 16 kV load having a lagging power
factor of 0.8. If the synchronous reactance is
100 N, calculate the value of E, per phase.
exciting
ad line
cO,
The generator in Fig. 2 has a synchronous
reactance of 0.4 2, per phase. It is con-
nected to an infinite bus having a line volt-
age of 14 kV, and the excitation voltage is
18
chro-
ation
g. 19).
E for a
age
adjusted to 1.14 pu.
hasor
Calculate
1S KA
a. The torque angle § when the generator
delivers 420 MW
of E
b. The mechanical displacement angle a
c. The linear pole shift (measured along
the inside stator circumference)
ive
nms.
er phase
corresponding to this displacement
angle [in]
For what
19 A test taken on the 500 MVA alternator of
Fig. 2 yields the following results:
Onen-circuit line voltage is 15 kV for a
Power
14](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F585e4a80-646c-4418-ada9-cb992a2ce44b%2Fca96dcd4-f3e2-4135-ae91-db0644c91d38%2F0qumbl.jpeg&w=3840&q=75)
Transcribed Image Text:NCHRONOUS GENERATORS
383
kept
Calculate
age and
a. The synchronous impedance Z, per phase
b. The total resistance of the circuit, per
phase
c. The total reactance of the circuit, per
phase
d. The line current
reac-
lo sgs e. The line-to-neutral voltage across the
w the
load
d ex-
f. The line voltage across the load
g. The power of the turbine driving the
alternator
eters.
xcitation
s. Using
h. The phase angle between E, and the
voltage across the load
how the
17
A 3-phase generator rated 3000 KVA, 20 kV,
900 r/min, 60 Hz delivers power to a 2400
KVA, 16 kV load having a lagging power
factor of 0.8. If the synchronous reactance is
100 N, calculate the value of E, per phase.
exciting
ad line
cO,
The generator in Fig. 2 has a synchronous
reactance of 0.4 2, per phase. It is con-
nected to an infinite bus having a line volt-
age of 14 kV, and the excitation voltage is
18
chro-
ation
g. 19).
E for a
age
adjusted to 1.14 pu.
hasor
Calculate
1S KA
a. The torque angle § when the generator
delivers 420 MW
of E
b. The mechanical displacement angle a
c. The linear pole shift (measured along
the inside stator circumference)
ive
nms.
er phase
corresponding to this displacement
angle [in]
For what
19 A test taken on the 500 MVA alternator of
Fig. 2 yields the following results:
Onen-circuit line voltage is 15 kV for a
Power
14
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