148. INFLUENCE OF SEGMENTATION ON THE PRECISION  OF CIRCUIT BASED METHODS

Andrijana Kuhar; Vesna Arnautovski-Toševa; Lidija Ololoska-Gagoska; Leonid Grčev; Blagoja Markovski

doi:10.51466/JEEIT201831-2021–30

Andrijana Kuhar
Vesna Arnautovski-Toševa
Lidija Ololoska-Gagoska
Leonid Grčev
Blagoja Markovski

DOI: https://doi.org/10.51466/JEEIT201831-2021–30

Keywords: segmentation, numerical models, convergence

Abstract

Abstract: Numerical methods are based on segmenting the domain of calculations. In this paper the influence of wire segmentation on the precision of calculations of approximate numerical models for analysis of grounding systems is investigated. It is well known that increasing the number of segments leads to increased precision in the calculations. However, the maximum number of segments is limited by the conditions from the thin wire approximation that is implemented by these methods. As a result convergence of the numerical technique may not always be reached. In this paper convergence of the relative error obtained by each numerical method as a function of relative segment length is parametrically investigated.

Author Biographies

Andrijana Kuhar

Faculty of Electrical Engineering and Information Technologies,
"Ss. Cyril and Methodius" University in Skopje,
Rugjer Bošković bb, P.O. box 574, 1001 Skopje, Republic of Macedonia

Vesna Arnautovski-Toševa

Faculty of Electrical Engineering and Information Technologies,
"Ss. Cyril and Methodius" University in Skopje,
Rugjer Bošković bb, P.O. box 574, 1001 Skopje, Republic of Macedonia

Lidija Ololoska-Gagoska

Faculty of Electrical Engineering and Information Technologies,
"Ss. Cyril and Methodius" University in Skopje,
Rugjer Bošković bb, P.O. box 574, 1001 Skopje, Republic of Macedonia

Leonid Grčev

A b s t r a c t: Numerical methods are based on segmenting the domain of calculations. In this paper the influence of wire segmentation on the precision of calculations of approximate numerical models for analysis of grounding systems is investigated. It is well known that increasing the number of segments leads to increased precision in the calculations. However, the maximum number of segments is limited by the conditions from the thin wire approximation that is implemented by these methods. As a result convergence of the numerical technique may not always be reached. In this paper convergence of the relative error obtained by each numerical method as a function of relative segment length is parametrically investigated.

Blagoja Markovski

Faculty of Electrical Engineering and Information Technologies,
"Ss. Cyril and Methodius" University in Skopje,
Rugjer Bošković bb, P.O. box 574, 1001 Skopje, Republic of Macedonia