Homework Answers
Add Answer to:
Help
Q4)A generator operating at 60 Hz delivers 1.0 pu power to an infinite bus through...
A 50 Hz, 250 MVA synchronous generator having inertia constant H=5 MJ/MVA is connected to an infinite bus through trans...
A 50 Hz, 250 MVA synchronous generator having inertia constant H=5 MJ/MVA is connected to an infinite bus through transformer and transmission line as shown below. The transformer reactance is based on 500 MVA, while the other impedances are based on the generator MVA Infinite bus 1 2 3 XL 0.1 pu - oto G1 V= 1.0 pu X 0.1 pu Xd = 0.3 pu at 500 MVA The generator is delivering 0.8 of full load current at a power...
A 3-phase, 1000-MVA, 20-kV, 60-Hz synchronous generator is connected to an infinite bus as shown below. All impedances are given in pu values. The generator delivers 0.9 pu power at unity power factor to the infinite bus whose voltage is at 1 p
A 3-phase, 1000-MVA, \(20-\mathrm{kV}, 60-\mathrm{Hz}\) synchronous generator is connected to an infinite bus as shown below. All impedances are given in pu values. The generator delivers \(0.9\) pu power at unity power factor to the infinite bus whose voltage is at 1 pu.If phase 'A' of circuit 2 (CCT 2) between buses H1 and H2 is suddenly opened at point ' \(\mathrm{F}\) ' near bus H1 due to the opening of a circuit breaker, determine:(a) [10 marks] The internal voltage...
4. A 60 Hz generator is supplying 70% of P max to an infinite bus through...
4. A 60 Hz generator is supplying 70% of P max to an infinite bus through a reactive network. A fault occurs which increases the reactance of the network by 500%. When the fault is cleared, the maximum power that can be delivered is 90% of the original maximum value. Determine the critical clearing angle for the condition described.
Question 2 A 60 Hz synchronous generator with Xd 0.2 pu transient reactance is connected to...
Question 2 A 60 Hz synchronous generator with Xd 0.2 pu transient reactance is connected to an infinite us through a transformer and the transmisiones as shown in the Figure. All system reactances are marked on the diagram and are expressed on a common MVA base. The generator dies a power of Auto busbar 1. The magnitude of the generator's excitation voltage e'is 12 pu, and the infinite bus voltage is -1.00u. If a 3-phase fault occurs at the middle...
The generator has an internal voltage of 1.5 pu and an inertia constant (H) of 3 MJ/MVA. Determine whether the generator is transiently stable or not if the fault clearing time is 0.15 seconds.
A generator, with a transient reactance of j0.5 pu, delivers 1.0 pu real power to an infinite bus through a transformer and two transmission lines in parallel as shown below. A solid three phase fault occurs at position near “F” which is cleared by opening both ends of the transmission leaving only one line in service.
The generator has an internal voltage of 1.5 pu and an inertia constant (H) of 3 MJ/MVA. Determine whether the generator is transiently stable...
a) Calculate the generator internal voltage E’ and the initial generator power angle δ prior to...
a) Calculate the generator internal voltage E’ and the initial
generator power angle δ prior to the fault.
b) Write the swing equation for the machine. What will be the
generator angle δ' at the instant when the fault is cleared after
0.1 s?
c)Determine whether the synchronous generator will remain stable
after the fault is cleared.
d) If the fault clearing is delayed, determine the critical
clearing angle and critical clearing time.
= A 50 Hz synchronous generator with...
A 50-Hz generator, connected directly to an infinite bus operating at a voltage of 120° pu, has a synchronous reactance...
A 50-Hz generator, connected directly to an infinite bus operating at a voltage of 120° pu, has a synchronous reactance of 1.35 pu. The generator no-load voltage is 1.1 pu, and its inertia constant H is 4 MJ/MVA. The generator is suddenly loaded to 60 percent of its maximum power limit. Determine the frequency of the resulting natural oscillations of the generator rotor.
A 50-Hz generator, connected directly to an infinite bus operating at a voltage of 120° pu, has...
PLEASE SOLVE THIS POWER / LOAD FLOW 07-Elec-B December 2016 Page 7 of 7 Problem 7...
PLEASE SOLVE THIS POWER / LOAD FLOW
07-Elec-B December 2016 Page 7 of 7 Problem 7 Consider the system shown in the single-line diagram of Figure (5). Here, a 60-Hz synchronous generator having a transient reactance of 0.15 pu. is connected to an infinite bus through a transformer whose reactance is 0.1 p. u. and a double circuit transmission line with circuits having a reactance of 0.6 p.u each as indicated in the figurc. The generator delivers a real power...
A 100MVA synchronous generator is connected to a 25kV infinite bus through two parallel transmission lines....
A 100MVA synchronous generator is connected to a 25kV infinite bus through two parallel transmission lines. The synchronous reactance of the generator is 2.5Ω. Each transmission line has inductive reactance of 2Ω and 0.2Ω resistance. The generator delivers 90MVA to the infinite bus at 0.8 power factor lagging. For the above conditions, calculate: a. The terminal voltage of the generator b. The equivalent field voltage and power angle c. The real power output at the generator terminals d. The reactive...
Problem 2 (50 points): The generator in the figure generates and delivers 150 MW to the...
Problem 2 (50 points): The generator in the figure generates and delivers 150 MW to the power system below. At steady state the generator regulates the generating station voltage (bus 1) to pu. The system voltage at bus 3 is 1.05 pu. 1. Compute the internal voltage and rotor angle of the generator under the above conditions. 2. The fault sequence for a solid three-phase fault on any of the line circuits consists of a delayed tripping of both circuit...
A 50 Hz, 250 MVA synchronous generator having inertia constant H=5 MJ/MVA is connected to an infinite bus through transformer and transmission line as shown below. The transformer reactance is based on 500 MVA, while the other impedances are based on the generator MVA Infinite bus 1 2 3 XL 0.1 pu - oto G1 V= 1.0 pu X 0.1 pu Xd = 0.3 pu at 500 MVA The generator is delivering 0.8 of full load current at a power...
4. A 60 Hz generator is supplying 70% of P max to an infinite bus through a reactive network. A fault occurs which increases the reactance of the network by 500%. When the fault is cleared, the maximum power that can be delivered is 90% of the original maximum value. Determine the critical clearing angle for the condition described.
Question 2 A 60 Hz synchronous generator with Xd 0.2 pu transient reactance is connected to an infinite us through a transformer and the transmisiones as shown in the Figure. All system reactances are marked on the diagram and are expressed on a common MVA base. The generator dies a power of Auto busbar 1. The magnitude of the generator's excitation voltage e'is 12 pu, and the infinite bus voltage is -1.00u. If a 3-phase fault occurs at the middle...
a) Calculate the generator internal voltage E’ and the initial
generator power angle δ prior to the fault.
b) Write the swing equation for the machine. What will be the
generator angle δ' at the instant when the fault is cleared after
0.1 s?
c)Determine whether the synchronous generator will remain stable
after the fault is cleared.
d) If the fault clearing is delayed, determine the critical
clearing angle and critical clearing time.
= A 50 Hz synchronous generator with...
A 50-Hz generator, connected directly to an infinite bus operating at a voltage of 120° pu, has a synchronous reactance of 1.35 pu. The generator no-load voltage is 1.1 pu, and its inertia constant H is 4 MJ/MVA. The generator is suddenly loaded to 60 percent of its maximum power limit. Determine the frequency of the resulting natural oscillations of the generator rotor.
A 50-Hz generator, connected directly to an infinite bus operating at a voltage of 120° pu, has...
PLEASE SOLVE THIS POWER / LOAD FLOW
07-Elec-B December 2016 Page 7 of 7 Problem 7 Consider the system shown in the single-line diagram of Figure (5). Here, a 60-Hz synchronous generator having a transient reactance of 0.15 pu. is connected to an infinite bus through a transformer whose reactance is 0.1 p. u. and a double circuit transmission line with circuits having a reactance of 0.6 p.u each as indicated in the figurc. The generator delivers a real power...
Problem 2 (50 points): The generator in the figure generates and delivers 150 MW to the power system below. At steady state the generator regulates the generating station voltage (bus 1) to pu. The system voltage at bus 3 is 1.05 pu. 1. Compute the internal voltage and rotor angle of the generator under the above conditions. 2. The fault sequence for a solid three-phase fault on any of the line circuits consists of a delayed tripping of both circuit...
Most questions answered within 3 hours.
-
What specific indicators can point to lack of progress for
African Americans in American society?
asked 38 minutes ago -
1-The Electrons in a beam are moving at 2.7×108 m/s in an
electric field of 15000...
asked 54 minutes ago -
A gas tank is a vertical cylinder. It has a radius of 1m, a
height of...
asked 1 hour ago -
Accent Software faces the following conditions. All of these
support Accent’s use of a market-penetration pricing...
asked 2 hours ago -
A mathematically inclined friend emails you the following
instructions: "Meet me in the cafeteria the first...
asked 2 hours ago -
A monopoly sells in two countries . The demand curves in the two
countries are p1...
asked 3 hours ago -
A .15kg rubber ball is bounced off a wall. Before hitting the
wall, the ball moves...
asked 3 hours ago -
A manufacturing company preparing to build a new plant is
considering three potential locations for it....
asked 3 hours ago -
B. If compound Y has approximately the same values of solubility
in toluene as compound X,...
asked 4 hours ago -
Oscar Inc. has inventory in Japan valued at 39,051,000 Yen one
year ago. One year ago...
asked 4 hours ago -
If Canada suffered from "fundamental disequilibrium," and its
government choose not to devalue its currency, a...
asked 5 hours ago -
4. How many input & output Key Value Pairs are passed into,
and emitted out of...
asked 4 hours ago