Optical high voltage breakdown prediction using thermal lensing effect in transformer oil

R. Struebig, I. Glesk



We describe an optical system to monitor microscopic pre-breakdown events in liquid insulation. The system has successfully demonstrated its ability to predict high voltage breakdown in transformer oil. A simple theory based on a thermal lens build up between electrodes as a result of applied voltage is presented to explain the system operation and obtained measured results.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 14)
Pages:290-293 Date of Publication: 2016/5/20
ISSN: 2172-038X Date of Current Version:2016/05/04
REF:295-16 Issue Date: May 2016
DOI:10.24084/repqj14.295 Publisher: EA4EPQ

Authors and affiliations

R. Struebig, I. Glesk
Department of Electronic and Electrical Engineering. University of Strathclyde. Glasgow ,Scotland, United Kingdom

Key words

Breakdown prediction, Liquid insulator, High voltage, Oil movement, Laser measurements.


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