For an 100kw generator, only 50kw of load is connected.
will the generator generate only 50kw or 100kw. if it
generate 100kw what happens to rest of the 50kw. what
happens if we connect more than 100kw of load?
Answer Posted / rvg.msceb
Generator is only an energy converter. The generator rating
100KW is specified is max. rating with pf. of 0.8( as per
manufacturs std.)
During the starting no DG set runs with full/partial load.
and it just generate the power required to meet the losses
only. Once after we connects load, it will generate power
required to meet the losses and output. The same equivalent
amount of mechanical power will be consumed from the prime
mover according to the efficiency of the system. So there
is no such question of 50KW energy wastage. Ultimately,
governer of prime mover plays an important role over DG
set.
if we connects more load say 200% of full load, for a
specified time according to the insulation and winding
temperature and prime mover output capacity, the DG can
function, say max. 2-3 minutes. Beyond that, DG will be
shutdown because of higher temp./or out of synchronism.
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