Q2 A three-phase power system is shown in Figure Q2. The data for this system is given in Table Q2. The pre-fault load current and A-Y transformer phase shift are neglected. (a) Draw all the sequence network using a 250 MYA, 275 kV based in the transmission line zone. Write the values of all the parameters on the sequence network. (b) Compute the subtransient fault current at Bus 4 for a line to line to ground fault (DLG). (c) Discuss the answer in part (b) if the neutral of the generator is not grounded.
Q2 A three-phase power system is shown in Figure Q2. The data for this system is given in Table Q2. The pre-fault load current and A-Y transformer phase shift are neglected. (a) Draw all the sequence network using a 250 MYA, 275 kV based in the transmission line zone. Write the values of all the parameters on the sequence network. (b) Compute the subtransient fault current at Bus 4 for a line to line to ground fault (DLG). (c) Discuss the answer in part (b) if the neutral of the generator is not grounded.
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
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.45P: Figure 3.39 shows a oneline diagram of a system in which the three-phase generator is rated 300 MVA,...
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