Problem 2: The following figure shows a power system consisting of two parts, A and B. Bus #1 is connected to other buses of part A and bus #2 to other buses of part B. There is no connection between the two parts except through the two transmission lines shown in the figure. When the two circuit breakers a and b are open the Short Circuit Capacity of buses 1 and 2 are SCC, = 5 pu MVA and SCC, = 2.5 pu MVA. Find the SCC of each of the three buses when the circuit breakers a and b are both closed. В 2 j0.3 pu2 j0.1 pu2 3

Problem 2: The following figure shows a power system consisting of two parts, A and B. Bus #1 is connected to other buses of part A and bus #2 to other buses of part B. There is no connection between the two parts except through the two transmission lines shown in the figure. When the two circuit breakers a and b are open the Short Circuit Capacity of buses 1 and 2 are SCC, = 5 pu MVA and SCC, = 2.5 pu MVA. Find the SCC of each of the three buses when the circuit breakers a and b are both closed. В 2 j0.3 pu2 j0.1 pu2 3

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

Chapter9: Unsymmetrical Faults

Section: Chapter Questions

Problem 9.13P: Consider the oneline diagram of a simple power system shown in Figure 9.20. System data in per-unit...

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estion 9 The fault current level of a circuit breaker used in a transmission line with phase voltage 2.2 kV and breaking capacity 50 MVA is yet ......kA. vered -ked out of Flag question estion 10 The voltage between lines in a transmission line is the maximum value of the sine waveform. yet vered Select one: -ked out of O True Flag question O False
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