Application of the impedance estimation method using small signal injection for harmonic contribution evaluation

Mateus Mostaro de Oliveira¹; Henrique Moreira Monteiro¹; Afonso Henrique Souza de Almeida¹; Carlos Augusto Duque¹; Leandro Rodrigues Manso Silva¹

¹ Universidade Federal de Juiz de Fora

Resumo

In recent years, harmonic distortion is a growing concern due to the increase in the volume of non-linear devices applied in energy systems. These devices cause harmonic distortion of voltage and current throughout the power system, which can result in reduced efficiency in the generation, transmission and use of electrical power. Those responsible for energy systems have been making efforts to ensure that the levels of harmonic distortion of voltage are kept limited to the harmonic currents injected by non-linear loads. In this scenario, this paper presents a method based on harmonic impedance to determine the responsibility for harmonic emission at the Point Common Coupling (PAC).

Palavras-chave: Power Quality; harmonic impedance; harmonic contribution; harmonic source estimation; SWRDFT