Naslov
Influencing factors in insulation model testing

Autori
Gabrić, Petar ; Mikulecky, Antun ; Ilić, Damir ; Podobnik, Vladimir

Izvornik
Energija = Journal of Energy (0013-7448) 63 (2014), Special Issue; 13-21

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, stručni

Ključne riječi
oil-barrier insulation ; cumulative method ; influencing factor ; model uncertainty ; sensitivity coefficient ; step-by-step method

Sažetak
The aim of this paper is to examine different factors that influence the quality of insulation models high voltage testing results. These factors are related to model geometry and model testing procedures. Model geometry is visually checked, several influencing factors are detected and their influence on el. field calculation results is evaluated using finite element method (FEM) and cumulative method for oil-barrier insulation design. The procedure for model geometry uncertainty estimation is performed using first-order Taylor series approximation. Also, the influence of previous voltage exposure history of a specimen, so-called “memo effect”, is estimated with a cumulative exposure method.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA