A method for determination of harmonics responsibilities at the point of common coupling using data correlation analysis

In this study, a new method is proposed to evaluate the utility harmonic impedance and the harmonics responsibilities at the point of common coupling. The former task is accomplished by involving the harmonic phase angles in the data correlation method, and the latter one is done using an approach based on the fluctuation of the background harmonic voltage. An important advantage of the method is to take the load harmonic impedance into account in appropriate manner. The performance of the proposed method is verified using simulation studies for different cases and also field measurements. Long-term measurement data are used to determine the harmonic contribution of the industrial customers and short-term measurement data are utilised to validate the effectiveness of the proposed method. Totally, simulation analysis and case study demonstrate more accuracy of the proposed method in comparison with other present methods.