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Harmonic Sources Localization: Comparison of methods utilizing the voltage rate or the current rate

The paper deals with the problem of the localization of harmonic sources in a power system. The aim of the paper is the comparison of two one-point methods utilizing the specially-defined rates. One method utilizes the so-called current rate, i.e. the rate calculated with use of source currents of equivalent sources representing the utility and customer sides. The second method is based on the so-called voltage rate, i.e. the rate calculated with use of source voltages of the equivalent sources representing the utility and customer sides. In the paper, a comparison of the mentioned methods is made taking into account their theoretical background, principles of localization of harmonic sources, utilization, efficiency and case studies. At the end, the conclusion from the performed analyses are given.