Curve Fitting Analysis of Expulsion Fuse Links for Protection Studies

This work purpose is support the protection engineer in the modeling of expulsion fuse links using curve fitting. The proposed approach used the fuse time-current characteristic to achieve the polynomial function that represent the fuse link model. Preferred K fuse was used. The polynomial coefficie...

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Published in2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) pp. 1 - 6
Main Authors da Costa, Guilherme Braga, Zanin Bertoletti, Augusto, de Morais, Adriano Peres, Cardoso, Ghendy, Bretas, Arturo Suman
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2019
Subjects
coordination
curve fitting
expulsion fuse link
selectivity
time-current characteristic
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Summary:This work purpose is support the protection engineer in the modeling of expulsion fuse links using curve fitting. The proposed approach used the fuse time-current characteristic to achieve the polynomial function that represent the fuse link model. Preferred K fuse was used. The polynomial coefficients were obtained by MATLAB software. The polynomial order that best represents the fuse link was determined employing the cross-validation technique. After selecting the polynomial order, the generated curves were plotted to determine the point of intersection between the curves, that is, the maximum value of the current that maintains the coordination between the fuses. The results were promising. In this way, it is hoped to foment the development of new protection studies for power distribution systems.
ISSN:2643-8798
DOI:10.1109/ISGT-LA.2019.8895456