3 44 a 130 mva 13 2 kv three phase generator which has a positive sequ
3.44 A 130-MVA, 13.2-kV three-phase generator, which has a positive-
sequence reactance of 1.5 per unit on the generator base, is connected to a
135-MVA, 13.2 A/115 Y-kV step-up transformer with a series impedance
of (0.005+ j0.1) per unit on its own base. (a) Calculate the per-unit gen-
erator reactance on the transformer base. (b) The load at the transformer
terminals is 15 MW at unity power factor and at 115 kV. Choosing the
transformer high-side voltage as the reference phasor, draw a phasor dia-
gram for this condition. (c) For the condition of part (b), find the trans-
former low-side voltage and the generator internal voltage behind its
reactance. Also compute the generator output power and power factor.
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