Y-connected, solid grounded and is operated at rated voltage at no-load and is disconnected from the rest of the system. Its positive and negative sequence reactances are 0.10 p.. and its zero sequence reactance is 0.05 p.. Calculate in ohms of inductive reactance to be inserted in the neutral connection of the generator to limit the fault current for a single line to ground fault to the fault current of a symmetrical three-phase fault.
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.
A generator is rated 100 MVA, 15 kV. It is Y-connected, solid grounded and is operated at rated voltage at no-load and is disconnected from the rest of the system. Its positive and negative sequence reactances are 0.10 p.. and its zero sequence reactance is 0.05 p.. Calculate in ohms of inductive reactance to be inserted in the neutral connection of the generator to limit the fault current for a single line to ground fault to the fault current of a symmetrical three-phase fault.
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