A three-phase 20 MVA, 11 kV generator has a reactance of 10% and is connected via a bank of three single-phase transformers to a transmission line whose series reactance is 100 2. The transmission line is supplying a load of 10 MVA at 10 kV and 0.8 power factor. The transformer bank at the generator end is connected in delta on the generator side and in star on the transmission line side and the transformer on the load side is star-star connected. Each of the single phase transformers in the bank of transformers is rated at 10 MVA, 11/110 kV with a reactance of 8%. Draw the pu circuit diagram for a system base of 10 MVA, 15 kV in the load circuit. Calculate the voltage at the generator terminals.

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Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.