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Investigation into Accelerated Ageing and Failure Mechanisms of Cavities in Polyethylene Materials Using Partial Discharge Techniques

Investigation into Accelerated Ageing and Failure Mechanisms of Cavities in Polyethylene Materials Using Partial Discharge Techniques
Investigation into Accelerated Ageing and Failure Mechanisms of Cavities in Polyethylene Materials Using Partial Discharge Techniques
A prolonged period of ageing behavior on polyethylene samples containing a gas-filled cavity has been investigated using diagnostic assessment methods to develop understanding of the causes of dielectric failure. In this experiment, low density polyethylene (LDPE) samples are made using a multiple layer technique. The experimental results detail the investigation for correlation between the partial discharge (PD) characteristics and chemical reactions on the cavity surface. The evolution of discharge mechanisms can be distinguished into three stages with an elapsed time of ageing. Some visible evidence of eroded by-products on the inner surface of a cavity are examined by measuring further at the level of microanalysis as a result of oxidative ageing in terms of chemical by-products, microscopic structures and thermal degradation.
ageing, cavity, partial discharge, microanalysis
836-840
Tanmaneeprasert, T
8a06b23b-1cca-43c9-a86b-798fb1cd157e
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Tanmaneeprasert, T
8a06b23b-1cca-43c9-a86b-798fb1cd157e
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e

Tanmaneeprasert, T and Lewin, P L (2016) Investigation into Accelerated Ageing and Failure Mechanisms of Cavities in Polyethylene Materials Using Partial Discharge Techniques. CMD 2016 International Conference on Condition Monitoring and Diagnostics 2016, Xi'an, China. 24 - 27 Sep 2016. pp. 836-840 . (doi:10.1109/CMD.2016.7757956).

Record type: Conference or Workshop Item (Paper)

Abstract

A prolonged period of ageing behavior on polyethylene samples containing a gas-filled cavity has been investigated using diagnostic assessment methods to develop understanding of the causes of dielectric failure. In this experiment, low density polyethylene (LDPE) samples are made using a multiple layer technique. The experimental results detail the investigation for correlation between the partial discharge (PD) characteristics and chemical reactions on the cavity surface. The evolution of discharge mechanisms can be distinguished into three stages with an elapsed time of ageing. Some visible evidence of eroded by-products on the inner surface of a cavity are examined by measuring further at the level of microanalysis as a result of oxidative ageing in terms of chemical by-products, microscopic structures and thermal degradation.

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e-pub ahead of print date: 1 December 2016
Published date: 1 December 2016
Venue - Dates: CMD 2016 International Conference on Condition Monitoring and Diagnostics 2016, Xi'an, China, 2016-09-24 - 2016-09-27
Keywords: ageing, cavity, partial discharge, microanalysis
Organisations: EEE

Identifiers

Local EPrints ID: 405050
URI: http://eprints.soton.ac.uk/id/eprint/405050
PURE UUID: cf8c95c2-9e61-4ff6-b46f-41253e692923

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Date deposited: 23 Jan 2017 15:48
Last modified: 21 Nov 2021 05:20

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Contributors

Author: T Tanmaneeprasert
Author: P L Lewin

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