Why the power factor of the alternator in power plant is kept .8 lagging. Can't we maintain it at 1.
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Answer Posted / lokeshraj
We use the capacitor bank to maintain the power factor at .8 when it goes below this value, capacitor compensate the reactive power needed, and improves the power factor. Why don't we use this much value of capacitor that the pf becomes unity. Because if we use the capacitor at the load end and makes the pf unity the losses in the line will be decreased and the load capacity of the line will be increased.
Only in unloaded or lightly loaded condition the receiving end voltage of the line becomes higher than the sending end voltage.
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