synchronous generator operates initially at steady state with a mechanical power of 1pu and a corresponding maximum electrical power of 2.5 pu. Calculate the initial load angle. A three phase to earth fault occurs on the associated bus reducing the maximum electrical power to 0.9 pu. After the clearance of the fault by automatic switchgear operation the maximum electrical power rises to 2.1 pu. Calculate the load angle after the clearance of the fault. Calculate the critical clearing angle. Calculate also
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 synchronous generator operates initially at steady state with a
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