Avaliação das Tensões Harmônicas em Sistemas de Distribuição Provocadas por Conversor Estático de Potência de Seis Pulsos (Evaluating Harmonic Voltage in Electric Distribution Systems due to Six-Pulse Static Power Converter)

Claudionor Francisco do Nascimento (claudionor@ufscar.br)1, Edmarcio Antonio Belati (edmarcio.belati@ufabc.edu.br)2, Alvaro Batista Dietrich (alvaro.dietrich@ufabc.edu.br)2, Haroldo de Faria (haroldo.faria@ufabc.edu.br)2, Alessandro Goedtel (agoedtel@utfpr.edu.br)3


1Universidade Federal de São Carlos
2Universidade Federal do ABC
3Universidade Tecnológica Federal do Paraná

This paper appears in: Revista IEEE América Latina

Publication Date: Sept. 2014
Volume: 12,   Issue: 6 
ISSN: 1548-0992


Abstract:
The circulation of harmonic currents in power systems, caused by particular nonlinear loads, leads to harmonic voltages which depend on the circuit and on the load it drives. Harmonic currents in the system also contribute with a portion of the system technical losses and produce a series of undesirable effects. This paper presents an alternative approach based on an efficient harmonic load flow algorithm in order to evaluate harmonic voltages along distribution systems due to nonlinear loads, more specifically a six-pulse static power converter. The proposed methodology uses frequency-domain formulations which allow dealing directly with voltage and current phasors. Tests were carried out on 04 and 34 bus distribution systems in order to evaluate the proposed technique performance.

Index Terms:
electric distribution systems, harmonic load flow, harmonic voltage, six-pulse static power converter   


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