Generator is the heart of an electrical power system. As it converts mechanical energy into its electrical equivalent, which is further distributed at various voltages. It therefore requires a ''prime mover'' to develop this mechanical power and this can take the form of steam, gas or water turbines or diesel engine.
Faults:
Electrical:
Stator insulation failure
overload
overvoltage
unbalanced load
rotor faults
loss of excitation
loss of synchronism
Mechanical:
failure of prime mover
low condenser vacuum
lubrication oil failure
loss of boiler firing
over speeding
rotor distortion
excessive vibration
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