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Partial discharges within two spherical voids in an epoxy resin

Partial discharges within two spherical voids in an epoxy resin
Partial discharges within two spherical voids in an epoxy resin
A void in a dielectric insulation material may exist due to imperfection in the insulation manufacturing or long term stressing. Voids have been identified as one of the common sources of partial discharge (PD) activity within an insulation system, such as in cable insulation and power transformers. Therefore, it is important to study PD phenomenon within void cavities in insulation. In this work, a model of PD activity within two spherical voids in a homogeneous dielectric material has been developed using finite element analysis software to study the parameters affecting PD behaviour. The parameters that have been taken into account are the void surface conductivity, electron generation rate and the inception and extinction fields. Measurements of PD activity within two spherical voids in an epoxy resin under ac sinusoidal applied voltage have also been performed. The simulation results have been compared with the measurement data to validate the model and to identify the parameters affecting PD behaviour. Comparison between measurements of PD activity within single and two voids in a dielectric material have also been made to observe the difference of the results under both conditions.
0022-3727
335301-[10pp]
Illias, H.A.
e79f56dd-c8b7-4973-9db5-d112e14a3249
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Bakar, A.H.A.
ad6a2c5f-31ea-4a40-b4e4-ed2a7908ba79
Mokhlis, H.
5f7421ad-06ca-448a-86a4-cd98627c6b48
Tunie, M.A.
e553528a-2d3f-4c84-b9ec-29d9f67dc069
Illias, H.A.
e79f56dd-c8b7-4973-9db5-d112e14a3249
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Bakar, A.H.A.
ad6a2c5f-31ea-4a40-b4e4-ed2a7908ba79
Mokhlis, H.
5f7421ad-06ca-448a-86a4-cd98627c6b48
Tunie, M.A.
e553528a-2d3f-4c84-b9ec-29d9f67dc069

Illias, H.A., Chen, George, Bakar, A.H.A., Mokhlis, H. and Tunie, M.A. (2013) Partial discharges within two spherical voids in an epoxy resin. Journal of Physics D: Applied Physics, 46 (33), 335301-[10pp]. (doi:10.1088/0022-3727/46/33/335301).

Record type: Article

Abstract

A void in a dielectric insulation material may exist due to imperfection in the insulation manufacturing or long term stressing. Voids have been identified as one of the common sources of partial discharge (PD) activity within an insulation system, such as in cable insulation and power transformers. Therefore, it is important to study PD phenomenon within void cavities in insulation. In this work, a model of PD activity within two spherical voids in a homogeneous dielectric material has been developed using finite element analysis software to study the parameters affecting PD behaviour. The parameters that have been taken into account are the void surface conductivity, electron generation rate and the inception and extinction fields. Measurements of PD activity within two spherical voids in an epoxy resin under ac sinusoidal applied voltage have also been performed. The simulation results have been compared with the measurement data to validate the model and to identify the parameters affecting PD behaviour. Comparison between measurements of PD activity within single and two voids in a dielectric material have also been made to observe the difference of the results under both conditions.

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Published date: 29 July 2013
Organisations: EEE

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Local EPrints ID: 356494
URI: http://eprints.soton.ac.uk/id/eprint/356494
ISSN: 0022-3727
PURE UUID: 06dcad9a-9fda-4b45-b5c7-6fa72bef51fc

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Date deposited: 30 Sep 2013 15:56
Last modified: 19 Jul 2019 21:27

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