Answer to Question #345843 in Electrical Engineering for henry

Question

A 100 MVA, 11 KV, 3-phase generator has a reactance of 20%. The generator

is connected to a 3-phase transformer T I rated 100 MVA, 11/132 KV with 10% reactance. The H.V. side of the transformer is connected to a transmission line of reactance 100 ohm. The far end of the line is connected to a step down three phase transformer T 2 rated 100MVA, 132/11 KV with 10% reactance. The generator supplies two motors connected in parallel on the L.V side of T 2 . The motors are rated at 25 MVA and 50 MVA both at 10 KV with 15% reactance. Taking the generator rating as base;

i) Draw a one-line and reactance diagrams representing the above

power system network showing all the values in per unit.

ii) Calculate the generator terminal voltage.