“…In this scenario, scientific literature points to many difficulties associated with determining harmonic impedances of customer units. [20][21][22][23][24][25] In addition, the dynamics associated with the topological changes of the network, and mainly to the operation of customer loads, aggravate further the knowledge of these harmonic impedance values, when considering information on magnitude and phase shift. In this situation, some methodologies, 26,27 developed by this same research group, cannot be applied due to high variation level of the system that can lead to an increase of the resulting inaccuracy.…”