Strategies of Energy-Efficient Active Filtering in the Two Wattmeter Reference Frame

Abstract

Such basic concepts of power theory as apparent power, active current and minimum power losses in the transmission line are defined for a three-phase three-wire system in the shortened two wattmeter reference frame. On the basis of these concepts, two energy-efficient active filtration strategies were developed and verified by virtual experiments. The first of them minimizes the power losses of a three-phase three-wire transmission line with different values of its resistances and ensures a unit value of the power factor. The second strategy follows the recommendation of IEEE Std. 1459-2010 ensures the minimum power loss of the transmission line with symmetrical sinusoidal currents of a three-phase source.

Keywords

• three-phase three-wire power supply system
• apparent power
• active current
• energy-efficient strategies of active filtering
• two wattmeter reference frame