Consider the circuit as shown. Assume that E = 1.25 p.u. and V = 1.00 p.u. (You can assume that the transient reactance of the generator is j 0.03 pu.)
Consider the circuit as shown. Assume that E=1.25 p.u. and V=1.00 p.u. (You can assume that the transient reactance of the generator is j 0.03 pu.)
a) Find the initial power angle \(\delta\) when the active component of the load on the circuit is 2.8 p.u. [5 marks]
b) A three-phase short circuit takes place in the middle of transmission line 3 . Determine whether the system will remain stable or not when the fault is sustained (i.e., a permanent fault). [10 marks]
c) Determine the maximum angle of oscillation under a sustained fault. [10 marks]
Homework Answers
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Consider the circuit as shown. Assume that E = 1.25 p.u. and V = 1.00 p.u. (You can assume that the transient reactance of the generator is j 0.03 pu.)
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...
Problem 7 Consider the circuit shown in Figure (4.) Assume that E 1.2 p.u. and V 1.00 p.u. where a three-phase fault takes place at the point F as shown. The fault is cleared by opening the faulted l...
Problem 7 Consider the circuit shown in Figure (4.) Assume that E 1.2 p.u. and V 1.00 p.u. where a three-phase fault takes place at the point F as shown. The fault is cleared by opening the faulted line. a Find the initial power angle when the active component of the load on the circuit is 1 p.u. b Find the power angle curve, during the fault. [5 points] c Find the post fault power angle curve. [5 points] [5...
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 remote generator transmits energy to a major load/generation via a system shown in the drawing....
A remote generator transmits energy to a major load/generation via a system shown in the drawing. Assume the generators voltage behind transient reactance to be 1.1pu, the infinite bus voltage to be 1.0 pu and the power transfer to be 0.3 pu during the steady state condition of the network. The line reactance is j0. 5 pu per line and the transient reactance of the generator isj0. 2 pu. The normalised constant of the generator H- 3KWS7KVA A 3 phase...
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...
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...
The six-bus system shown in Figure 1 will be simulated using MATLAB. Transmission line data and b...
The six-bus system shown in Figure 1 will be simulated using MATLAB. Transmission line data and bus data are given in Tables 1 and 2 respectively. The transmission line data are calculated on 100 MVA base and 230 (line-to-line) kV base for generator. Tasks: 1. Determine the network admittance matrix Y 2. Find the load flow solution using Gauss-Seidel/Newton Raphson method until first iteration by manual calculation. Use Maltab software to solve power flow problem using Gauss-Seidel method. Find the...
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...
Problem 7 Consider the circuit shown in Figure (4.) Assume that E 1.2 p.u. and V 1.00 p.u. where a three-phase fault takes place at the point F as shown. The fault is cleared by opening the faulted line. a Find the initial power angle when the active component of the load on the circuit is 1 p.u. b Find the power angle curve, during the fault. [5 points] c Find the post fault power angle curve. [5 points] [5...
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 remote generator transmits energy to a major load/generation via a system shown in the drawing. Assume the generators voltage behind transient reactance to be 1.1pu, the infinite bus voltage to be 1.0 pu and the power transfer to be 0.3 pu during the steady state condition of the network. The line reactance is j0. 5 pu per line and the transient reactance of the generator isj0. 2 pu. The normalised constant of the generator H- 3KWS7KVA A 3 phase...
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...
The six-bus system shown in Figure 1 will be simulated using MATLAB. Transmission line data and bus data are given in Tables 1 and 2 respectively. The transmission line data are calculated on 100 MVA base and 230 (line-to-line) kV base for generator. Tasks: 1. Determine the network admittance matrix Y 2. Find the load flow solution using Gauss-Seidel/Newton Raphson method until first iteration by manual calculation. Use Maltab software to solve power flow problem using Gauss-Seidel method. Find the...
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