Distortion responsibility evaluation for frequency domain power measurement

The decomposition of voltage, current and power is presented in order to determine the responsibility of the distribution company and the electrical energy consumer for the harmonic distortion measured at the point of common coupling, PCC. This way, three types of variables should be managed, namely fundamental frequency, frequencies associated with the distribution system distortion and frequencies associated with the consumer distortion. These magnitudes can be also measured in relation to power factor compensation and harmonic elimination problems in power distribution systems. Moreover, the power factors resulting from the new decomposition are also analyzed. The algorithm of the decomposition will be implemented on a measurement platform based on a digital signal processor, DSP.