METHOD AND SYSTEM FOR MEASURING TRADITIONAL REACTIVE POWER UNDER ANY OPERATING CONDITIONS OF THREE-PHASE ELECTRICAL NETWORKS

摘要

The invention relates to a method for calculating traditional reactive power in three-phase networks with poor supply quality and, in particular, for quantifying which part of the reactive power is due to reactance and which part is due to unbalance, comprising steps consisting in: obtaining the fundamental frequency components of the instantaneous currents and voltages of each phase; obtaining the time phasors of the stationary fundamental frequency component of the voltage and intensity of the three-phase network, V 1z e I 1z;obtaining the reactive intensities of each phase ( I r1z ); dividing the reactive intensities of each phase ( I r1z) into reactive intensity due to reactance and reactive intensity due to unbalance; and, subsequently, obtaining the reactive power due to reactance and the reactive power due to unbalance.