Prof Dr. Walter Barra Junior2025-04-222012LEITE, Jandecy Cabral; ABRIL, Ignacio Perez; TOSTES, Maria Emília de Lima; OLIVEIRA, Roberto Célio Limão de. Frequency scan on a phase-coordinates frame for unbalanced systems. Electric Power Systems Research, v. 93, p. 113-119, 2012. Disponível em: https://doi.org/10.1016/j.epsr.2012.07.013.https://rigalileo.itegam.org.br/handle/123456789/1109This paper presents a method for analyzing unbalanced electric networks using the frequency scan technique in a phase-coordinates frame. The developed model accurately represents unbalanced networks, such as distribution systems with asymmetric transformer banks, single-phase loads, and non-linear elements. The method is implemented in Matlab and tested on a four-wire delta system, demonstrating its effectiveness in identifying resonances and analyzing harmonics.pdf.Harmonic analysisFrequency scanPhase-coordinatesUnbalanced systemsPower distributionArtigoEngenharia Elétrica