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Network model for testing the accuracy of a “RLC” method for determining the propagation direction of higher harmonics

There are several methods through which the propagation of higher harmonics in the power grid can be determined. The methods differ according to the input data and the number of measurement points required for their calculation. The basic division is made by number of measurement points - multi-point and single-point methods. There is no generally accepted method in the current literature or any general guidance/ standard recommending one method. Each method requires different input parameters, and not all methods are equally applicable in practice. The aim of the paper is to examine the accuracy and applicability of proposed method for determining the direction of higher harmonics based on single point measurements, and to explore and prove the possibilities of implementing them on the existing measurement infrastructure. Based on the data (direction of power harmonics) collected from several measuring instruments in a part of the power system, the system operator can locate the cause of harmonic distortion in his power system.