The University of Southampton
University of Southampton Institutional Repository

Towards intelligent insulation

Towards intelligent insulation
Towards intelligent insulation
The transmission and distribution of electrical energy relies upon a robust infrastructure of high voltage plant. The integrity of electrical plant becomes increasingly suspect over time due to various ageing processes. Numerous devices and spectroscopic techniques are available to analyse plant condition and recently research has been carried out into the design of materials which can perform some form of self-diagnosis. These mainly include smart materials which can respond to stimuli such as heat, mechanical stress and electric fields.

Designs for a novel multi-layer passive electrical field monitoring device are proposed and potential modes of operation described. A selection of candidate smart materials were tested, and the suitability of fluorophores, chromophores and liquid crystals are discussed. Liquid crystals were studied in the greatest detail and are confirmed to demonstrate electric field dependent changes in opacity, the extent of which is dependent on the magnitude of the applied field, and the type of liquid crystal selected.

A finite element analysis (FEA) model was developed to explore the material requirements in terms of permittivity and breakdown strength. The proposed multi-layer device fulfils the project brief of being a passive system with clear visual signalling of changes in the local electric field, which could be specifically developed for safety purposes, condition monitoring or both. The device is anticipated to have applications in AC and DC electrical plant based on the promising responses of liquid crystals to both AC and DC electric fields.
Holt, Alex
9aab8a69-bccc-4a51-81d5-56fe1002c569
Holt, Alex
9aab8a69-bccc-4a51-81d5-56fe1002c569
Brown, Richard
21ce697a-7c3a-480e-919f-429a3d8550f5

(2013) Towards intelligent insulation. University of Southampton, Chemistry, Doctoral Thesis, 216pp.

Record type: Thesis (Doctoral)

Abstract

The transmission and distribution of electrical energy relies upon a robust infrastructure of high voltage plant. The integrity of electrical plant becomes increasingly suspect over time due to various ageing processes. Numerous devices and spectroscopic techniques are available to analyse plant condition and recently research has been carried out into the design of materials which can perform some form of self-diagnosis. These mainly include smart materials which can respond to stimuli such as heat, mechanical stress and electric fields.

Designs for a novel multi-layer passive electrical field monitoring device are proposed and potential modes of operation described. A selection of candidate smart materials were tested, and the suitability of fluorophores, chromophores and liquid crystals are discussed. Liquid crystals were studied in the greatest detail and are confirmed to demonstrate electric field dependent changes in opacity, the extent of which is dependent on the magnitude of the applied field, and the type of liquid crystal selected.

A finite element analysis (FEA) model was developed to explore the material requirements in terms of permittivity and breakdown strength. The proposed multi-layer device fulfils the project brief of being a passive system with clear visual signalling of changes in the local electric field, which could be specifically developed for safety purposes, condition monitoring or both. The device is anticipated to have applications in AC and DC electrical plant based on the promising responses of liquid crystals to both AC and DC electric fields.

PDF
__soton.ac.uk_ude_PersonalFiles_Users_lp5_mydocuments_Theses PDF files_PhD 2013 A Holt.pdf - Other
Download (91MB)

More information

Published date: April 2013
Organisations: University of Southampton, Chemistry

Identifiers

Local EPrints ID: 353097
URI: http://eprints.soton.ac.uk/id/eprint/353097
PURE UUID: 4eb80fc6-b4b3-454c-8104-746b185d8772
ORCID for Richard Brown: ORCID iD orcid.org/0000-0003-0156-7087

Catalogue record

Date deposited: 03 Jun 2013 10:43
Last modified: 06 Jun 2018 13:01

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.

×