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The greater need for electrical energy brings with it the constant search for potential sources for generating electrical energy.The Brazilian interconnected electrical system is expanding, with the change in the energy matrix mainly through renewable sources, with an intermittent characteristic, typically coupled to the grid using power electronics equipment.These energy uses have characteristics that cause the propagation of electromagnetic phenomena throughout the network where they are connected.In view of this, this work aims to evaluate the withstandability of wind turbines to voltage sags, due to the occurrence of short circuits in the basic transmission network, as well as to carry out the study of harmonic distortions caused by the generation of wind energy in the system.To develop this analysis, a case study is carried out in a wind complex located in northeastern Brazil.The system modeling is carried out using the ATPDraw and HarmZs software, using equivalent models of the wind complex.The voltage drop simulations carried out demonstrated the existence of points allowing the wind farm machines to be disconnected, in accordance with current guidelines, in the first and second neighborhood.The results of the harmonic distortion simulations indicate that the performance of the studied wind farm already presents an adequate individual harmonic distortion rate and also that the installation of a future capacitor bank must reduce the harmonic distortion rate for most frequencies.
Rufato et al. (Tue,) studied this question.