Power Factor Correction

         Power Factor Correction

            It is often desirable to adjust the power factor of a system to near 1.0. This power factor  
correction (PFC) is achieved by switching in or out banks of inductors or capacitors For example 
the inductive effect of motor loads may be offset by locally connected capacitors. When 
reactive elements supply or absorb reactive power near the load, the apparent power is  
reduced.

            Power factor correction may be applied by an electrical power transmission utility to improve 
the stability and efficiency of the transmission network. Correction equipment may be 
installed by individual electrical customers to reduce the costs charged to them by their 
electricity supplier. A high power factor is generally desirable in a transmission system to 
reduce transmission losses and improve voltage regulation at the load.