The motors M, and M, of Problem 3.45 have inputs of 120 and 60 MW, respectively, at 13.2 kV, and both operate at unity power factor. Deter- mine the generator terminal voltage and voltage regulation of the line. Neglect transformer phase shifts.
The motors M, and M, of Problem 3.45 have inputs of 120 and 60 MW, respectively, at 13.2 kV, and both operate at unity power factor. Deter- mine the generator terminal voltage and voltage regulation of the line. Neglect transformer phase shifts.
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Answer question 46 please!
![3.46 The motors M¡ and M, of Problem 3.45 have inputs of 120 and 60 MW,
respectively, at 13.2 kV, and both operate at unity power factor. Deter-
mine the generator terminal voltage and voltage regulation of the line.
Neglect transformer phase shifts.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50f8516f-ca69-4754-af99-d30dbf47eb66%2F8fd7ebaf-55ea-44d5-9314-43da5c3e148d%2Frlwn1o7_processed.png&w=3840&q=75)
Transcribed Image Text:3.46 The motors M¡ and M, of Problem 3.45 have inputs of 120 and 60 MW,
respectively, at 13.2 kV, and both operate at unity power factor. Deter-
mine the generator terminal voltage and voltage regulation of the line.
Neglect transformer phase shifts.
![3.45 Figure 3.39 shows a oneline diagram of a system in which the three-phase
generator is rated 300 MVA, 20 kV with a subtransient reactance of 0.2 per
unit and with its neutral grounded through a 0.4-2 reactor. The transmis-
sion line is 64 km long with a series reactance of 0.5 Q/km. The three-phase
transformer T, is rated 350 MVA, 230/ 20 kV with a leakage reactance of
0.1 per unit. Transformer T, is composed of three single-phase transform-
ers, each rated 100 MVA, 127/13.2 kV with a leakage reactance of 0.1 per
unit. Two 13.2-kV motors M, and M, with a subtransient reactance of
0.2 per unit for each motor represent the load. M, has a rated input of
200 MVA with its neutral grounded through a 0.4-N current-limiting reac-
tor. M, has a rated input of 100 MVA with its neutral not connected to
ground. Neglect phase shifts associated with the transformers. Choose
the generator rating as base in the generator circuit and draw the posi-
tive-sequence reactance diagram showing all reactances in per unit.
(20 kV)
T,
(13.8 kV)
FIGURE 3.39
T2
M,
p
(230 kV)
Problems 3.45
k 3E !
m3E n
M2
and 3.46](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50f8516f-ca69-4754-af99-d30dbf47eb66%2F8fd7ebaf-55ea-44d5-9314-43da5c3e148d%2Focxjmb9_processed.png&w=3840&q=75)
Transcribed Image Text:3.45 Figure 3.39 shows a oneline diagram of a system in which the three-phase
generator is rated 300 MVA, 20 kV with a subtransient reactance of 0.2 per
unit and with its neutral grounded through a 0.4-2 reactor. The transmis-
sion line is 64 km long with a series reactance of 0.5 Q/km. The three-phase
transformer T, is rated 350 MVA, 230/ 20 kV with a leakage reactance of
0.1 per unit. Transformer T, is composed of three single-phase transform-
ers, each rated 100 MVA, 127/13.2 kV with a leakage reactance of 0.1 per
unit. Two 13.2-kV motors M, and M, with a subtransient reactance of
0.2 per unit for each motor represent the load. M, has a rated input of
200 MVA with its neutral grounded through a 0.4-N current-limiting reac-
tor. M, has a rated input of 100 MVA with its neutral not connected to
ground. Neglect phase shifts associated with the transformers. Choose
the generator rating as base in the generator circuit and draw the posi-
tive-sequence reactance diagram showing all reactances in per unit.
(20 kV)
T,
(13.8 kV)
FIGURE 3.39
T2
M,
p
(230 kV)
Problems 3.45
k 3E !
m3E n
M2
and 3.46
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