Accuracy of algorithms for calculating active power in a circuit with polyharmonic effects

The effect of voltage and current spectra on the accuracy of the algorithm used to calculate active power in an electric circuit in which the oscillation period is not a multiple of the sampling interval is analyzed. Expressions are derived for estimating the error of two power calculation algorithms. Translated from Izmeritel'naya Tekhnika, No. 7, pp. 38–42, July, 1995.