Solved: Equipment ratings for the five-bus power system
Chapter , Problem 9.8(choose chapter or problem)
Equipment ratings for the five-bus power system shown in Figure 7.15 are given as follows: Generator G1: 50 MVA, 12 kV, X00 d _ X2 _ 0:20, X0 _ 0:10 per unit Generator G2: 100 MVA, 15 kV, X00 d _ 0:2, X2 _ 0:23, X0 _ 0:1 per unit Transformer T1: 50 MVA, 10 kV Y/138 kV Y, X _ 0:10 per unit Transformer T2: 100 MVA, 15 kV D/138 kV Y, X _ 0:10 per unit Each 138-kV line: X1 _ 40 ohms, X0 _ 100 ohms Draw the zero-, positive-, and negative-sequence reactance diagrams using a 100- MVA, 15-kV base in the zone of generator G2. Neglect DY transformer phase shifts.
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