Pre-breakdown Characteristics of Contaminated Power Transformer Oil
Chen, G and Zuber, H M (2007) Pre-breakdown Characteristics of Contaminated Power Transformer Oil. In, Conference on Electrical Insulation and Dielectric Phenomena, Vancouver, Canada, 14 - 17 Oct 2007. IEEE, 659-662.
Download
![[img]](http://eprints.soton.ac.uk/style/images/fileicons/application_pdf.png) |
PDF
Download (4Mb) |
Description/Abstract
In this paper we have studied pre-breakdown characteristics of transformer oil in the presence of different levels of contamination. The contaminant is fibrous dust from pressboard insulation used for high voltage transformers. The contamination level investigated in the present study ranges from 0.0025 to 0.0075% by weight. The conduction current under dc voltages were recorded and bridging effect was monitored using optical images. It has been found that the conduction current typically increases with the applied voltage, the duration of the voltage application and the level of contamination. Optical images revealed that bridging occurs when oil is subjected to the voltage and bridge dimension increases with the contamination level and the duration. The current flowing between the two spherical electrodes is closely related to the bridging dynamics.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Event Dates: October 14 - 17, 2007 |
| ISBNs: | 1424414814 |
| Keywords: | Transformer oil, bridging phenomenon, conduction current, pre-breakdown, contamination, insulation |
| Divisions: | Faculty of Physical and Applied Science > Electronics and Computer Science Faculty of Physical and Applied Science > Electronics and Computer Science > EEE |
| Item ID: | 264706 |
| Date Deposited: | 20 Oct 2007 |
| Last Modified: | 21 Aug 2012 04:12 |
| Contributors: | Chen, G (Author) Zuber, H M (Author) |
| Date: | 2007 |
| Additional Information: | Event Dates: October 14 - 17, 2007 |
| Status: | Published |
| Publisher: | IEEE |
| Further Information: | Google Scholar |
| ISI Citation Count: | 0 |
| URI: | http://eprints.soton.ac.uk/id/eprint/264706 |
Actions (login required)
 |
View Item |
