3.5.4 Average Active and Reactive Power

Average active and reactive power over the integration period may be calculated directly from the metrology output registers for power of all harmonics and power of the fundamental harmonic:

Where, x = [A, B, C] and:

• N is the number of samples in the integration period
• P_x_Watts is the average active power of all harmonics of phase x
• Q_x_VARs is the average reactive power of all harmonics
• P_x_F_Watts is the average active power of fundamental harmonic
• Q_x_F_VARs is the average reactive power of fundamental harmonic
• ACC_P_x is the accumulated active power quantity for all harmonics
• ACC_Q_x is the accumulated reactive power quantity for all harmonics
• ACC_P_x_F is the accumulated active power quantity for fundamental harmonic
• ACC_Q_x_F is the accumulated reactive power quantity for fundamental harmonic