Measurement of the Individual Harmonics Reactive Power in Nonsinusoidal Systems

This paper presents a method of individual harmonics reactive power measurement for a load supplied by a nonsinusoidal source. The method consists of transforming the load-voltage and the load-current frequency spectra by multiplying both quantities by the quadrature voltages. Next, the products obtained are filtered with a pair of mutually symmetrical narrow-band filters. The mean value of the filter output voltage product appears to be proportional to the individual harmonics reactive power of the load.