On the aging mechanism of solid insulating materials exposed to repetitive high voltage pulses

verfasst von

K. Niayesh, Ernst Gockenbach

Abstract

This paper proposes an explanation for the aging of solid insulating materials exposed to high frequency voltage impulses based on thermal stimulating processes triggered by losses generated in insulating materials due to damped oscillations of molecular dipoles in high frequency electrical fields. For this purpose, total dissipation of insulating materials is calculated based on frequency domain description of applied voltage and frequency dependent dielectric properties of insulating materials. To validate the proposed theory, different experimental investigations are carried out on thin oil impregnated paper exposed to high voltage square wave shape pulses with different pulse durations, rise times and repetition rates. The trends obtained in experimental studies can be satisfactorily explained using the proposed theory.

Organisationseinheit(en)

Fachgebiet Hochspannungstechnik und Asset Management (Schering-Institut)

Externe Organisation(en)

University of Tehran

Typ

Artikel

Journal

IEEE Transactions on Dielectrics and Electrical Insulation

Band

21

Seiten

304-310

Anzahl der Seiten

7

ISSN

1070-9878

Publikationsdatum

02.2014

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektrotechnik und Elektronik

Elektronische Version(en)

https://doi.org/10.1109/TDEI.2013.004055 (Zugang: Geschlossen)