For the following reasons, a Power
plant capacity rating may be expressed in MW instead of MVA.
In a Generating station, the prime
mover (Turbine) generates only and onlyActive
Power. That’s why we rated a power plant capacity in MW instead of MVA. Its
mean no matter how large your generator is, but it depends on the capacity of
the engine (Prime mover/Turbine) I.e. a
50MW turbine connected to a 90MVA alternator in a power plant will generate
only 50MW at full load. In short, a power plant rating is specified in terms of
prime mover /Turbine (Turbine rating may be seen by nameplate rating which is
in MW or Horsepower (HP) not in MVA) and not by the alternator set coupled to
it.
Another thing is that, electric
power company charges their consumer for kVA while they generate kW (or MW) at
the power station (Power plant).They penalize their consumer for low Power
factor because they are not responsible for low power factor and kVA but you.
Moreover, in power plant, power factor is 1 therefore MW is equal to MVA …… (MW
= MVA x P.f).
Another interesting & funny
answer by one of our Facebook page fan…“Power House means, house of the Power,
and we know that the unit or power is Watt. That’s why we rated power plant
capacity in MW and not in MVA”
No comments:
Post a Comment