Comparison of a Thermally Accelerated Aged Oil-Paper Insulation of an Open and Hermetically Sealed System

verfasst von
T. Münster, T. Kinkeldey, P. Werle, K. Hämel, J. Preusel
Abstract

This study investigates differences in the ageing behaviour of an oil-paper insulation system in an open and hermetically closed system concerning relevant ageing markers of three different insulating liquids. In this context, the correlation of the ageing markers measured in the liquid and the current condition of the paper insulation is investigated. Accordingly, paper samples are impregnated with a non-inhibited and two different inhibited insulating oils having different oil components as well as different inhibitor contents, which are currently used in field. Although different papers from the past have shown investigations on ageing of oil-paper systems [1, 2] usually oil was used, which is not longer available today and furthermore no simultaneous comparative study was carried out in the past, as it is presented in this paper. The ageing for both systems takes place over a period of 15 weeks at the temperature of 130 ℃. These results are also supposed to be used to determine the current paper condition using the values of ageing markers of the oil without the furan content. The investigation shows that the type of used system and the oil types influence the ageing process of the insulation system and consequently the production of respective parameters. Moreover, there are differences depending on the system, which must be taken into account in the indirect state analysis of the insulating paper, since the ageing process in the closed system is slower than in the open system due to the lack of atmospheric oxygen and protection against ambient humidity.

Organisationseinheit(en)
Fachgebiet Hochspannungstechnik und Asset Management (Schering-Institut)
Externe Organisation(en)
GRIDINSPECT GmbH
Typ
Aufsatz in Konferenzband
Seiten
777-787
Anzahl der Seiten
11
Publikationsdatum
2020
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Wirtschaftsingenieurwesen und Fertigungstechnik
Elektronische Version(en)
https://doi.org/10.1007/978-3-030-31676-1_73 (Zugang: Geschlossen)