![Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u. c- Find the fault current due to a bolted-three-phase short circuit in the middle of line 1- 3. [5 points d- Find the voltages at buses 1 and 2 under the fault conditions of part c above [5 points] 0.225 pu. 0.035 pu. 0.2p.u ? 0.15 p.u. 0.215 ?.u. 0.125 p.u Figure (3) Single-line diagram for Problem 5](http://img.homeworklib.com/questions/762c35f0-c606-11eb-87a3-a16b5184c148.png?x-oss-process=image/resize,w_560)
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Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in...
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in...
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u. a- Find the fault current due to a bolted- three-phase short circuit at bus 3. [10 points] b- Find the fault current supplied by each generator and the voltage at each of the buses 1 and 2 under fault conditions. [10 points] 0.1 p.u 0.06 ?.u. 0.25 p.11....
Consider the system Shown in the single-line diagram of Figure (3). All reactance are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u.
Consider the system shown in the single-line diagram of Figure (3). All reactances are shown in per unit to the same base. Assume that the voltage at both sources is \(1 \mathrm{p}\).u.
a- Find the fault current due to a bolted- three-phase short circuit at bus \(3 .[10\) points \(]\)
b- Find the fault current supplied by each generator and the voltage at each of the buses 1 and 2 under fault conditions. \([10\) points \(]\)
PROBLEM 5 a Discuss the consequences of short circuit faults on electric power systems [5 Points...
PROBLEM 5 a Discuss the consequences of short circuit faults on electric power systems [5 Points Protective schemes are routinely used for electric power transformers. Name at least three different types of transformer protective schemes (by function) and explain briefly their principles of operation. [5 Points] Consider the system shown in the single-line diagram of Figure (4 per unit to the same base. Assume that the voltage at both sources is 1 p.u .) All reactances are shown in ind...
Discuss the consequences of short circuit faults on electric power systems.
a- Discuss the consequences of short circuit faults on an electric power systems (5 points)
b- Protective schemes are routinely used for electric power transformers. Name at least three different types of transformer protective schemes (by function) and explain briefly their principles of operation. (5 points)
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u.
c- Find...
The single-line diagram of a four-bus system and its bus impedance matrix are shown below BUS...
The single-line diagram of a four-bus system and its bus impedance matrix are shown below BUS 2 0.25 j0.2 0.125 0.25 0.4 BUS 3 BUS 1 BUS 4 j0.1 0.1 j0.2 j0.2 ground is the reference node) 0.25 0.2 0.16 0.14 0.2 0.23 0.15 0.151 ZBUs =기0.16 0.15 0.196 0.1 0.14 0.151 0. 0.195 A solid three-phase fault occurs at bus 2 of the network. (a) Calculate the initial symmetrical RMS current in the fault. (b) Determine the voltages during...
Exercise 3 Consider a 2 generator 4 bus power system shown in Figure E3. The impedance data of the network in p.u. are given in Figure E3. A bolted symmetrical three phase fault occurs at bus 4. Assu...
Exercise 3 Consider a 2 generator 4 bus power system shown in Figure E3. The impedance data of the network in p.u. are given in Figure E3. A bolted symmetrical three phase fault occurs at bus 4. Assuming the prefault bus voltages as I p.u., calculate the fault current and the current delivered by the generators during the fault and the bus voltages during the fault. j0.12 0.05 0.16 j0.18 j0.12 0.15 0.05 j0.12 j0.1 j0.14 4 (2 Figure E3:...
15 (c) Consider the single-line diagram of the power system shown in Figure. Neglect all resistances,...
15 (c) Consider the single-line diagram of the power system shown in Figure. Neglect all resistances, transformer phase shift, and magnetizing reactances. The given positive, negative and zero sequence reactances are based on common base. i. Sketch the positive, negative and zero sequence reactance diagrams for the given system. ii. Calculate the fault current for a line-line fault (b-c fault) at bus 5. iii. Calculate the three phase voltages at the fault of part (ii). AE AE 0.2) X.=X=0.06 X=0.17j...
Consider the system Shown in the single-line diagram of Figure 4. The required sequence reactances in per unit to the same base are as follows.
Consider the system shown in the single-line diagram of Figure 4. The required sequence reactances in per unit to the same base are as follows:
G1 X1 = X2 = 0.12
G2 X1 = X2 = 0.24
G3 X1 = X2 = 0.12
Transformers X11=X12= 0.12
Lines: Positive and X13=X12= 0.20 Negative Sequence
a. Draw the positive-, and negative- sequence reactance diagrams. [6 Points]
b- Determine the The'venin's equivalent of each sequence network as viewed from a fault in the...
By MATLAB Code: Assume all emf = 1 p.u. ALL Faults happen at BUS 6:
By MATLAB Code:
Assume all emf = 1 p.u.
ALL Faults happen at BUS 6:
Step 3: Carry out symmetrical fault analysis at bus 6 showing the fault current, bus voltages and line currents during the fault. Step 4: Repeat step 3 with single-line-to-ground fault. Step 5: Repeat step 3 with line-to-line fault Step 6: Repeat step 3 with double-line-to-ground fault. We were unable to transcribe this imageLine & Transformer Data Generator Data From To X-XX 4 0.225 0.400 5...
Figure 1 Single line diagram b2 b3 b1 b4 grid Τι 13 A power system single line diagram is shown...
Figure 1 Single line diagram b2 b3 b1 b4 grid Τι 13 A power system single line diagram is shown in Figure 1. The single line diagram shows a synchronous generator G connected to a large 50 Hz grid via its unit transformer T and a network of three transmission lines. Relevant details of the grid, transformer, generator and overhead lines are provided in Tables I,II,II & IV respectively. A double line to ground fault occurs at bus 3 Questions....
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u. a- Find the fault current due to a bolted- three-phase short circuit at bus 3. [10 points] b- Find the fault current supplied by each generator and the voltage at each of the buses 1 and 2 under fault conditions. [10 points] 0.1 p.u 0.06 ?.u. 0.25 p.11....
PROBLEM 5 a Discuss the consequences of short circuit faults on electric power systems [5 Points Protective schemes are routinely used for electric power transformers. Name at least three different types of transformer protective schemes (by function) and explain briefly their principles of operation. [5 Points] Consider the system shown in the single-line diagram of Figure (4 per unit to the same base. Assume that the voltage at both sources is 1 p.u .) All reactances are shown in ind...
The single-line diagram of a four-bus system and its bus impedance matrix are shown below BUS 2 0.25 j0.2 0.125 0.25 0.4 BUS 3 BUS 1 BUS 4 j0.1 0.1 j0.2 j0.2 ground is the reference node) 0.25 0.2 0.16 0.14 0.2 0.23 0.15 0.151 ZBUs =기0.16 0.15 0.196 0.1 0.14 0.151 0. 0.195 A solid three-phase fault occurs at bus 2 of the network. (a) Calculate the initial symmetrical RMS current in the fault. (b) Determine the voltages during...
Exercise 3 Consider a 2 generator 4 bus power system shown in Figure E3. The impedance data of the network in p.u. are given in Figure E3. A bolted symmetrical three phase fault occurs at bus 4. Assuming the prefault bus voltages as I p.u., calculate the fault current and the current delivered by the generators during the fault and the bus voltages during the fault. j0.12 0.05 0.16 j0.18 j0.12 0.15 0.05 j0.12 j0.1 j0.14 4 (2 Figure E3:...
15 (c) Consider the single-line diagram of the power system shown in Figure. Neglect all resistances, transformer phase shift, and magnetizing reactances. The given positive, negative and zero sequence reactances are based on common base. i. Sketch the positive, negative and zero sequence reactance diagrams for the given system. ii. Calculate the fault current for a line-line fault (b-c fault) at bus 5. iii. Calculate the three phase voltages at the fault of part (ii). AE AE 0.2) X.=X=0.06 X=0.17j...
By MATLAB Code:
Assume all emf = 1 p.u.
ALL Faults happen at BUS 6:
Step 3: Carry out symmetrical fault analysis at bus 6 showing the fault current, bus voltages and line currents during the fault. Step 4: Repeat step 3 with single-line-to-ground fault. Step 5: Repeat step 3 with line-to-line fault Step 6: Repeat step 3 with double-line-to-ground fault. We were unable to transcribe this imageLine & Transformer Data Generator Data From To X-XX 4 0.225 0.400 5...
Figure 1 Single line diagram b2 b3 b1 b4 grid Τι 13 A power system single line diagram is shown in Figure 1. The single line diagram shows a synchronous generator G connected to a large 50 Hz grid via its unit transformer T and a network of three transmission lines. Relevant details of the grid, transformer, generator and overhead lines are provided in Tables I,II,II & IV respectively. A double line to ground fault occurs at bus 3 Questions....
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