A MATLAB tool to study harmonics penetration in grid unbalanced conditions

Harmonics is a very important subject in the area of power quality, due to the negative impacts they bring to the network. This paper presents a computational tool using MATLAB to study harmonic penetration in electric grids. The platform is then applied to a distribution system under balanced and u...

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Bibliographic Details
Published in2016 17th International Conference on Harmonics and Quality of Power (ICHQP) pp. 715 - 720
Main Authors Zambroni de Souza, M. F., Pereira, M. L., Silveira, P. M., Ribeiro, P.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2016
Subjects
Admittance
admittance matrix
frequency scan
Harmonic analysis
Harmonics
Impedance
Load modeling
Microgrids
Power system harmonics
Resonant frequency
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Summary:Harmonics is a very important subject in the area of power quality, due to the negative impacts they bring to the network. This paper presents a computational tool using MATLAB to study harmonic penetration in electric grids. The platform is then applied to a distribution system under balanced and unbalanced conditions at different harmonic frequencies. In the first two cases the grid is connected to an infinite bus, so the behavior of a balanced and an unbalanced grid is analyzed. The other two cases consider the grid isolated, once again, balanced and unbalanced conditions are focused. The proposed method employs a direct approach by injecting current of different harmonic levels. The analyses are made by observing the impacts the harmonics brings to the voltages of positive and negative sequence.
ISSN:2164-0610
DOI:10.1109/ICHQP.2016.7783343