Tutorial para Estimação de Impedâncias Harmônicas no MATLAB/Simulink

Studies involving harmonic distortion have gained importance due to the growing connection of non-linear equipment into the network and the consequent increase in distortion levels. Some of these studies require knowledge of the equivalent circuit harmonic impedances of the concessionaire, consumers, and other agents connected to a given busbar. However, determining these harmonic impedances in practical studies becomes challenging due to the electrical systems dynamics and the complex behavior of certain non-linear equipment. When it comes to computational studies, this estimation becomes more feasible. Since it is recognized that non-linear equipment may not behave like ideal current sources, methodologies for a more accurate estimate of these harmonic impedances are proposed. Thus, aiming to contribute to this theme, this work seeks to detail, in the form of a tutorial, the procedures for calculating harmonic impedances according to a recognized method proposed in the literature using the computational modeling of an IEEE PES reference test system implemented in MATLAB/Simulink software.