Original scientific paper

https://doi.org/10.17559/TV-20141003145514

A concept for experimental testing of oil-barrier insulation system

Petar Gabrić orcid.org/0000-0002-7764-781X ; Končar Electrical Engineering Institute, Fallerovošetalište 22, 10 000 Zagreb, Croatia
Antun Mikulecky ; Končar Electrical Engineering Institute, Fallerovošetalište 22, 10 000 Zagreb, Croatia
Damir Ilić ; Faculty of Electrical Engineering and Computing, Unska 3, 10 000 Zagreb, Croatia

Abstract

The aim of this paper is to present a concept for experimental testing of transformer oil-barrier insulation system. Design of insulation model is proposed with the purpose to avoid typical problems reported in literature concerning partial discharge testing of paper coated electrodes. Electric field between model electrodes is analyzed with methods commonly used in transformer insulation design - cumulative method and maximum electric field method. Model prototype is produced and tested to confirm functionality of the proposed concept. Also, model uncertainty is estimated to define model geometry influence on the test results.

Keywords

cumulative method; insulation model; maximum electric field method; measuring uncertainty; oil-barrier insulation; paper coated electrode; partial discharge testing

Hrčak ID:

179842

URI

https://hrcak.srce.hr/179842

Publication date:

14.4.2017.

Article data in other languages: croatian

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