Draw the per-unit impedance diagram of the network shown in Fig. 1, calculated to a common base of 50 MVA. Determine: (i) (ii) The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short- circuit fault at bus no. 4. The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short- circuit fault at bus no. 5. T₁ 132kV/33kV 50 MVA X=0.15 pu bus 1 1600 MVA Fault Level bus 2 40 km OHL X=0.4 2/km T3 T₂ 132kV/33kV 50 MVA X=0.15 pu 30 km OHL X=0.42/km bus 3 Cable j2.20 bus 4 33kV/11KV 15 MVA X=0.1 pu bus 5 Cable j2.5 Ω Figure 1 T4 33kV/11KV 12 MVA X=0.12 pu bus 6
Draw the per-unit impedance diagram of the network shown in Fig. 1, calculated to a common base of 50 MVA. Determine: (i) (ii) The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short- circuit fault at bus no. 4. The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short- circuit fault at bus no. 5. T₁ 132kV/33kV 50 MVA X=0.15 pu bus 1 1600 MVA Fault Level bus 2 40 km OHL X=0.4 2/km T3 T₂ 132kV/33kV 50 MVA X=0.15 pu 30 km OHL X=0.42/km bus 3 Cable j2.20 bus 4 33kV/11KV 15 MVA X=0.1 pu bus 5 Cable j2.5 Ω Figure 1 T4 33kV/11KV 12 MVA X=0.12 pu bus 6
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter7: Symmetrical Faults
Section: Chapter Questions
Problem 7.31P: A three-phase circuit breaker has a 15.5-kV rated maximum voltage, 9.0-kA rated short-circuit...
Related questions
Question
Please solve complete problem. I need step by step solution
![Draw the per-unit impedance diagram of the network shown in Fig. 1, calculated to a common base of
50 MVA.
Determine:
(i)
(ii)
The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short-
circuit fault at bus no. 4.
The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short-
circuit fault at bus no. 5.
T₁
132kV/33kV
50 MVA
X=0.15 pu
bus 1
1600 MVA Fault Level
bus 2
40 km OHL
X=0.4 2/km
T3
T₂
132kV/33kV
50 MVA
X=0.15 pu
30 km OHL
X=0.42/km
bus 3
Cable
j2.20
bus 4
33kV/11KV
15 MVA
X=0.1 pu
bus 5
Cable
j2.5 Ω
Figure 1
T4
33kV/11KV
12 MVA
X=0.12 pu
bus 6](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4e708f0d-d78d-450e-87f3-b2fbac629ac7%2F29b9c123-3e6c-4efe-b67f-98f654c8178c%2Fc8zogwf_processed.png&w=3840&q=75)
Transcribed Image Text:Draw the per-unit impedance diagram of the network shown in Fig. 1, calculated to a common base of
50 MVA.
Determine:
(i)
(ii)
The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short-
circuit fault at bus no. 4.
The rms fault current (in kA) and the fault level (in MVA) for a three-phase symmetrical short-
circuit fault at bus no. 5.
T₁
132kV/33kV
50 MVA
X=0.15 pu
bus 1
1600 MVA Fault Level
bus 2
40 km OHL
X=0.4 2/km
T3
T₂
132kV/33kV
50 MVA
X=0.15 pu
30 km OHL
X=0.42/km
bus 3
Cable
j2.20
bus 4
33kV/11KV
15 MVA
X=0.1 pu
bus 5
Cable
j2.5 Ω
Figure 1
T4
33kV/11KV
12 MVA
X=0.12 pu
bus 6
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 6 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
![Power System Analysis and Design (MindTap Course …](https://www.bartleby.com/isbn_cover_images/9781305632134/9781305632134_smallCoverImage.gif)
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning
![Power System Analysis and Design (MindTap Course …](https://www.bartleby.com/isbn_cover_images/9781305632134/9781305632134_smallCoverImage.gif)
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning