Power measurement using the wavelet transform of analytic signals

The wavelet transform of analytic signals is presented as a basis for instantaneous active and reactive power definitions. This is possible due to the instantaneous amplitude and phase information available from the proposed technique. The RMS values of these power quantities relate to the classical definitions of active and reactive power. It is argued that the property of orthonormality of the wavelet transform is important in order to obtain correct measurement of the power flow. The proposed method is verified by real measurements on the in-house developed rapid prototyping measuring platform.