Orthogonality of functions describing power states in electrical circuits in Budeanu's concept

The Budeanu's concept of circuit analyses with nonsinusoidal voltages and currents has been presented in details with Author's comments. It has been reminded that Bunet was the first who proposed summing up reactive powers of the harmonics of nonsinusoidal waveforms. This postulate was included in so called Boucherot theorem. It has been shown that proposed by Budeanu vectors presenting the reactive power Q
_B
and deformation power D not always are orthogonal. Based on mathematical calculation Author pointed out that drawing general conclusion about orthogonality of these powers is not justifiable.