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Why capacitor bank does not require in DG Set?
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Answer Posted / mrinmoy boruah
DG set supplies necessary current to load. Its (internal)
Power Factor is governed by its design. DG sets like
transformers are rated in KVA i.e. KVxI.
Whatever be the load power factor, a DG set's internal power
factor will be governed by its design.
If a reactive load such as inductor or capacitor of
equivalent capacity (LOAD KVA = DG set's KVA)) is connected
across a DG set's terminals, the power factor measured at
these terminals will be nearly 0. However in this situation
also DG set's internal PF wikk be its designed PF.
Power factor is a parameter with respect to its measurement
location.
If load supplied by a DG set consists of large number of low
power factor loads which eats up only very small portion of
its total capacity and the balance load is taken by a high
power factor load, then the power factor at DG set's
terminal will still be high. But the DG set's internal power
factor will still be governed by its design.
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