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ajit singh
12-06-2013 03:16 AM

Generator power factor

what should be the power factor of a generator connected to national grid in order to have maximum stability? Whether it should be high or low?
12-06-2013 06:13 AM
Top #2
Jim Phipps, P.E.
12-06-2013 06:13 AM
If you define maximum stability as the torque required to pull the rotor out of step with respect to the stator (a pole slip), then the maximum stability would be a condition where the rotor excitation is high with respect to the torque applied to the shaft. Thus, a synchronous machine will be more stable in the over excited state when the field current is high. For a generator, this would be a lagging power factor and for a motor it would be a leading power factor.
12-06-2013 08:39 AM
Top #3
Lester Philip Lualhati
12-06-2013 08:39 AM
well, it depends on your local agency or local code...
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