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Measuring and simulating partial discharge activity in a spherical cavity during electrical ageing processes

Measuring and simulating partial discharge activity in a spherical cavity during electrical ageing processes
Measuring and simulating partial discharge activity in a spherical cavity during electrical ageing processes

This paper considers partial discharge (PD) activity in an air-filled cavity under accelerated ageing condition. During ageing, PDs in the cavity bombard the inner cavity surface with charged particles leading to surface erosion and eventually complete failure. The time-evolution of phase-resolved partial discharge (PRPD) pattern demonstrates evidence of the formation of an eroded hole. Analysis of PD statistical quantities for distinct patterns is obtained in terms of apparent charge and the number of PDs per cycle. The physical parameters of the test sample such as the cavity radius, the material thickness, the applied voltage and the relative permittivity are used to implement a Finite Element Analysis (FEA) model, which is used to develop a PD model. The simulated PD behavior was analyzed in terms of PRPD patterns and statistical quantities in order to make a comparison with measurement results.

Accelerated ageing, Air-filled cavity, Failure, Partial discharge, PD model, PRPD pattern
121
Institute of Electrical and Electronics Engineers Inc.
Tanmaneeprasert, T.
8a06b23b-1cca-43c9-a86b-798fb1cd157e
Lewin, P. L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Callender, G.
4189d79e-34c3-422c-a601-95b156c27e76
Tanmaneeprasert, T.
8a06b23b-1cca-43c9-a86b-798fb1cd157e
Lewin, P. L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Callender, G.
4189d79e-34c3-422c-a601-95b156c27e76

Tanmaneeprasert, T., Lewin, P. L. and Callender, G. (2018) Measuring and simulating partial discharge activity in a spherical cavity during electrical ageing processes. In 2018 IEEE 2nd International Conference on Dielectrics, ICD 2018. Institute of Electrical and Electronics Engineers Inc. p. 121 . (doi:10.1109/ICD.2018.8468433).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper considers partial discharge (PD) activity in an air-filled cavity under accelerated ageing condition. During ageing, PDs in the cavity bombard the inner cavity surface with charged particles leading to surface erosion and eventually complete failure. The time-evolution of phase-resolved partial discharge (PRPD) pattern demonstrates evidence of the formation of an eroded hole. Analysis of PD statistical quantities for distinct patterns is obtained in terms of apparent charge and the number of PDs per cycle. The physical parameters of the test sample such as the cavity radius, the material thickness, the applied voltage and the relative permittivity are used to implement a Finite Element Analysis (FEA) model, which is used to develop a PD model. The simulated PD behavior was analyzed in terms of PRPD patterns and statistical quantities in order to make a comparison with measurement results.

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More information

Published date: 19 September 2018
Venue - Dates: 2nd International Conference on Dielectrics: 2ND IEEE INTERNATIONAL CONFERENCE ON DIELECTRICS, Budapest, Hungary, 2018-07-01 - 2018-07-05
Keywords: Accelerated ageing, Air-filled cavity, Failure, Partial discharge, PD model, PRPD pattern

Identifiers

Local EPrints ID: 426490
URI: http://eprints.soton.ac.uk/id/eprint/426490
PURE UUID: e05c4fa4-1576-49f8-84c3-3405f26901a4

Catalogue record

Date deposited: 29 Nov 2018 17:30
Last modified: 04 Dec 2018 17:30

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