Import Reactive power

Discussion in 'General Electronics Chat' started by Cerkit, Sep 9, 2015.

  1. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
    275
    3
    Hi.

    Can someone explain what it means for a generator to import reactive power?

    My understanding of reactive power is when the voltage and current waveforms are out of phase by 90 degrees due to reactance in a system.

    What exactly does it mean if a generator set imports VARs?

    How can I visualize this in terms of what is happening to the voltage and current curves at the generator point of connection to the grid?
     
  2. alfacliff

    Well-Known Member

    Dec 13, 2013
    2,449
    428
    a wind generator running a little slow can absorb power from the line.
     
  3. BR-549

    Well-Known Member

    Sep 22, 2013
    1,981
    388
    The only thing I have seen a generator import is torque.
     
  4. crutschow

    Expert

    Mar 14, 2008
    12,977
    3,221
    That may be referring to overexcited synchronous machines.
    Such a machine generates a leading reactive component, which acts like a large capacitor, absorbing the lagging reactive current such as from inductive motors.
    Here's a discussion of that.
     
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