The University of Southampton
University of Southampton Institutional Repository

Study of the depolarization current in mineral oils

Study of the depolarization current in mineral oils
Study of the depolarization current in mineral oils
Polarization and depolarization current measurement is a non-destructive testing method to study the dielectric properties of insulating materials. Two kinds of mineral oils with different aging time have been measured and compared. When the charge carriers drift to the electrodes, they may be blocked and accumulated in the vicinity of the electrode to form the charge layers. When the oil is discharged, the charge carriers in these charge layers will start to move backwards to the bulk and result in a depolarization current. The depolarization process can be affected by both diffusion and electric drift. In this paper, the diffusion theory has been used to study the depolarization in mineral oil and the experimental results have been fitted using exponential equations. It seems the depolarization current is mainly contributed by the diffusion of the charge carriers in the mineral oil. The assumption that there are two kinds of charge carriers in the mineral oil that made in frequency domain measurement has been verified in this paper
conductivity, slow charge carriers, oil, diffusion
978-1-4799-2063-1
1-4
Zhou, Yuan
22d46dcb-26b9-4416-80a3-efc58d81a061
Hao, Miao
fb7006e0-07c0-46f5-9279-e30a7d3bd614
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wilson, Gordon
fd02d259-a5b6-44ce-be29-47073c552c5b
Jarman, Paul
f0133a9d-702e-489a-afc5-2950eeba10ab
Zhou, Yuan
22d46dcb-26b9-4416-80a3-efc58d81a061
Hao, Miao
fb7006e0-07c0-46f5-9279-e30a7d3bd614
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wilson, Gordon
fd02d259-a5b6-44ce-be29-47073c552c5b
Jarman, Paul
f0133a9d-702e-489a-afc5-2950eeba10ab

Zhou, Yuan, Hao, Miao, Chen, George, Wilson, Gordon and Jarman, Paul (2014) Study of the depolarization current in mineral oils. 2014 IEEE International Conference on Liquid Dielectrics (ICLD). 30 Jun - 03 Jul 2014. pp. 1-4 .

Record type: Conference or Workshop Item (Paper)

Abstract

Polarization and depolarization current measurement is a non-destructive testing method to study the dielectric properties of insulating materials. Two kinds of mineral oils with different aging time have been measured and compared. When the charge carriers drift to the electrodes, they may be blocked and accumulated in the vicinity of the electrode to form the charge layers. When the oil is discharged, the charge carriers in these charge layers will start to move backwards to the bulk and result in a depolarization current. The depolarization process can be affected by both diffusion and electric drift. In this paper, the diffusion theory has been used to study the depolarization in mineral oil and the experimental results have been fitted using exponential equations. It seems the depolarization current is mainly contributed by the diffusion of the charge carriers in the mineral oil. The assumption that there are two kinds of charge carriers in the mineral oil that made in frequency domain measurement has been verified in this paper

Text
ICDL_2014_Y2.pdf - Accepted Manuscript
Download (766kB)

More information

Published date: 30 June 2014
Venue - Dates: 2014 IEEE International Conference on Liquid Dielectrics (ICLD), 2014-06-30 - 2014-07-03
Keywords: conductivity, slow charge carriers, oil, diffusion
Organisations: EEE

Identifiers

Local EPrints ID: 373700
URI: http://eprints.soton.ac.uk/id/eprint/373700
ISBN: 978-1-4799-2063-1
PURE UUID: 2d8afaf4-9fcd-4a3d-a6c6-a05d21fcb918

Catalogue record

Date deposited: 02 Feb 2015 09:47
Last modified: 19 Jul 2019 20:53

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×