Can someone explain to me what slipping a pole pitch means in regards to generators?
The following paragraph is from some class notes I was revising:
'A generator could lose synchronism with the power system because of a severe system fault disturbance, or operation at a high load with a leading power factor. This shock may cause the rotor to oscillate with consequent variations of current, voltage and power factor. If the angular displacement of the rotor exceeds the stable limit, the rotor will slip a pole pitch.'