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HOMEWORK PROBLEMS Q1: Repeat all part of the problem in the "Class Activity" if the generator...
HOMEWORK PROBLEMS Q1: Repeat all part of the problem in the "Class Activity" if the generator is Delta connected Q2: For the "Class Activity" problem what is the efficiency of thi...
HOMEWORK PROBLEMS Q1: Repeat all part of the problem in the "Class Activity" if the generator is Delta connected Q2: For the "Class Activity" problem what is the efficiency of this generator if it is loaded by a 500 kVA pure resistive load (at the same rated voltage and frequency) Q3: A 13.8-kV 10-MVA 0.8-PF-lagging 60-Hz two-pole Y-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. (a) What...
Question 1 Question 2 In the circuit shown, find V. 41-90° V 40 212 212 24/0°...
Question 1
Question 2
In the circuit shown, find V. 41-90° V 40 212 212 24/0° v (5) +-j412 322 v. Ideal A 13.8-KV 10-MVA 0.8-PF-lagging 60-Hz two-pole Y-connected steam-turbine generator has a synchronous reactance of 12 per phase and an armature resistance of 1.5 2 per phase. (a) What is the magnitude of Ea at rated conditions? (b) What is the torque angle of the generator at rated conditions? (c) If the field current is constant, and ignoring RA,...
A 13.8 kV, 10 MVA, 0.8 pf lagging, 60 Hz two-pole star-connected steam-turbine generator has a...
A 13.8 kV, 10 MVA, 0.8 pf lagging, 60 Hz two-pole star-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. This generator is operating in parallel with a large power system (infinite bus). At the absolute maximum power possible, how much reactive power will this generator be supplying or consuming? Sketch the corresponding phasor diagram. (Assume IF is still unchanged.)
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utili...
please show steps. Thank you.
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utility) bus to deliver power to a 2000 kw plant load at 0.866 lagging power factor. The synchronous generator is wye-connected and rated 3750 kva, 13.2 kv, and 0.8 power factor lagging with 1.0 per unit synchronous reactance and negligible armature resistance. 13.2 kVI 60 Hz I infinite bus utility) rated: 3750 kva 0.8 lag load: 2000 kW...
QUESTION 4 A three-phase Y-connected, 500 kVA, 3.2 kV, 0.85 PF-lagging, six-pole, 60 Hz synchronous generator...
QUESTION 4 A three-phase Y-connected, 500 kVA, 3.2 kV, 0.85 PF-lagging, six-pole, 60 Hz synchronous generator has a synchronous reactance of 15 ohm and an armature resistance of 0.8 ohm. What are the electrical losses in this generator at the rated conditions? Attach File Browse My Computer Browse Content Collection QUESTION 5 If phase current of a Delta-connected three-phase system is equal to 1pu, then the line current of the same system is equal to 3 pu. Click Save and...
A 100-MVA 12.5-KV 0.85-PF lagging 50-Hz two-pole Y-connected synchronous generator has a synchronous reactance of 1.7...
A 100-MVA 12.5-KV 0.85-PF lagging 50-Hz two-pole Y-connected synchronous generator has a synchronous reactance of 1.7 Q and a negligible armature resistance. I) What is the magnitude of the internal generated voltage at rated conditions? 2) What is its torque angle at these conditions? 3) What is its voltage regulation? 4) Ignoring the losses in this generator, what torque must be applied to its shaft by the prime mover at full load? 5) What is the maximum power the generator...
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.5Q/phase and a...
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected
synchronous generator has a resistance 0.5Q/phase and a synchronous
reactance of 5Q/phase. The generator is supplying its rated power
at its rated voltage and at a power factor lagging. The rotational
loss is 2 kW. Calculate:
(a) the power developed,
(b) the power angle,
(c) the voltage regulation, and
(d) the shaft torque.
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.50/phase and a synchronous...
A 12 KV, 60 MVA, unity PF, 60 Hz, 4-Pole ,Y connected synchronous generator has a...
A 12 KV, 60 MVA, unity PF, 60 Hz, 4-Pole ,Y connected synchronous generator has a reactance of 0.2 Ohms, and its armature resistance is ignorably small, its friction and windage losses are 1 MW and its core losses are 1.5 MW a) What is the mechanical speed of the prime mover in this machine? b) What is the internal voltage (EA) of this machine under rated conditions? c) What is the voltage regulation of this machine under rated conditions?...
Problem 2 (50 points): The synchronous generator shown in the figure below is operated at its rat...
Problem 2 (50 points): The synchronous generator shown in the figure below is operated at its rated apparent power (100 MVA), 0.95 pf. lagging, and 5% above rated voltage. Determine the subtransient fault current if a three phase short circuit fault occurs at the terminal of the motor (Bus 2) T1 2 100 MVA 100 MVA 13.8 kV 13.8 kV Δ/138 kVY X" = 0.15 X = 0.10 100 MVA 138 kV Y/13.8 kV Δ X0.10 100 MVA 13.8 kV...
Q2) A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generat...
Q2) A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generator has a synchronous reactance of 2.5 Ω and an armature resistance of 0.2 Ω At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a de voltage of 120 V, and the maximum , is 10 A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator...
HOMEWORK PROBLEMS Q1: Repeat all part of the problem in the "Class Activity" if the generator is Delta connected Q2: For the "Class Activity" problem what is the efficiency of this generator if it is loaded by a 500 kVA pure resistive load (at the same rated voltage and frequency) Q3: A 13.8-kV 10-MVA 0.8-PF-lagging 60-Hz two-pole Y-connected steam-turbine generator has a synchronous reactance of 12 Ω per phase and an armature resistance of 1.5 Ω per phase. (a) What...
Question 1
Question 2
In the circuit shown, find V. 41-90° V 40 212 212 24/0° v (5) +-j412 322 v. Ideal A 13.8-KV 10-MVA 0.8-PF-lagging 60-Hz two-pole Y-connected steam-turbine generator has a synchronous reactance of 12 per phase and an armature resistance of 1.5 2 per phase. (a) What is the magnitude of Ea at rated conditions? (b) What is the torque angle of the generator at rated conditions? (c) If the field current is constant, and ignoring RA,...
please show steps. Thank you.
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utility) bus to deliver power to a 2000 kw plant load at 0.866 lagging power factor. The synchronous generator is wye-connected and rated 3750 kva, 13.2 kv, and 0.8 power factor lagging with 1.0 per unit synchronous reactance and negligible armature resistance. 13.2 kVI 60 Hz I infinite bus utility) rated: 3750 kva 0.8 lag load: 2000 kW...
QUESTION 4 A three-phase Y-connected, 500 kVA, 3.2 kV, 0.85 PF-lagging, six-pole, 60 Hz synchronous generator has a synchronous reactance of 15 ohm and an armature resistance of 0.8 ohm. What are the electrical losses in this generator at the rated conditions? Attach File Browse My Computer Browse Content Collection QUESTION 5 If phase current of a Delta-connected three-phase system is equal to 1pu, then the line current of the same system is equal to 3 pu. Click Save and...
A 100-MVA 12.5-KV 0.85-PF lagging 50-Hz two-pole Y-connected synchronous generator has a synchronous reactance of 1.7 Q and a negligible armature resistance. I) What is the magnitude of the internal generated voltage at rated conditions? 2) What is its torque angle at these conditions? 3) What is its voltage regulation? 4) Ignoring the losses in this generator, what torque must be applied to its shaft by the prime mover at full load? 5) What is the maximum power the generator...
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected
synchronous generator has a resistance 0.5Q/phase and a synchronous
reactance of 5Q/phase. The generator is supplying its rated power
at its rated voltage and at a power factor lagging. The rotational
loss is 2 kW. Calculate:
(a) the power developed,
(b) the power angle,
(c) the voltage regulation, and
(d) the shaft torque.
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.50/phase and a synchronous...
A 12 KV, 60 MVA, unity PF, 60 Hz, 4-Pole ,Y connected synchronous generator has a reactance of 0.2 Ohms, and its armature resistance is ignorably small, its friction and windage losses are 1 MW and its core losses are 1.5 MW a) What is the mechanical speed of the prime mover in this machine? b) What is the internal voltage (EA) of this machine under rated conditions? c) What is the voltage regulation of this machine under rated conditions?...
Problem 2 (50 points): The synchronous generator shown in the figure below is operated at its rated apparent power (100 MVA), 0.95 pf. lagging, and 5% above rated voltage. Determine the subtransient fault current if a three phase short circuit fault occurs at the terminal of the motor (Bus 2) T1 2 100 MVA 100 MVA 13.8 kV 13.8 kV Δ/138 kVY X" = 0.15 X = 0.10 100 MVA 138 kV Y/13.8 kV Δ X0.10 100 MVA 13.8 kV...
Q2) A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generator has a synchronous reactance of 2.5 Ω and an armature resistance of 0.2 Ω At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a de voltage of 120 V, and the maximum , is 10 A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator...
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