Problem Feeder - Transformer

A single-phase load is supplied through a 35 kV feeder whose impedance is 115 + j380 Ohms and a 35 kV, 2400 V transformer whose equivalent impedance is 0.26 + j1.21 Ohms referred to its low voltage side. The load is 180 kW at 0.87 leading power factor and 2320 V. (a) Compute the voltage at high-voltage terminals of the transformer. (b) Compute the voltage at the sending end of the feeder. (c) Compute the power and reactive power input at the sending end of the feeder.

Saturated and unsaturated synchronous reactance

The following readings are taken from the results of an open- and a short-circuit test on a 9375-kVA three-phase Y-connected 13,800- V (line-to-line) two-pole 60-Hz turbine generator driven at synchronous speed: _____________________________________________________________ Field current, A 169 192 Armature current, short-circuit test, A 392 446 Line voltage, open-circuit characteristic,V 13,000 13,800 Line voltage, air-gap line, V 15,400 17,500 The armature resistance is 0.064 Ohms/phase. The armature leakage reactance is 0.10... click for more