Partial discharge patterns related to surface deterioration in voids in epoxy

Joachim Holbøll; Mogens Henriksen

doi:10.1109/ELINSL.1990.109721

Partial discharge patterns related to surface deterioration in voids in epoxy

Joachim Holbøll
, Mogens Henriksen

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

Results are presented from an investigation of the relationship between changes in partial discharge patterns and the surface deterioration process taking place in small naturally formed spherical voids in epoxy plastic. The voids were exposed to a moderate electric stress above inception level, where partial discharges were present for more than 1500 h. Two types of electrical tree growth were found, the bush like tree and a single channel-like tree, which led to very different partial discharge patterns. It is concluded that the formation of crystals on a void surface leads to an immediate and easy-to-detect increase in the partial discharge activity with subsequent severe surface deterioration (deep pit formations) in the vicinity of the crystal. However, the partial discharge signal from a specimen with a black channel-like tree structure did not give any indication of channel growth

Original language	English
Journal	I E E E International Symposium on Electrical Insulation. Conference Record
Pages (from-to)	115-119
ISSN	0164-2006
DOIs	https://doi.org/10.1109/ELINSL.1990.109721
Publication status	Published - 1990
Event	1990 IEEE International Symposium on Electrical Insulation - Toronto, Canada Duration: 3 Jun 1990 → 6 Jun 1990

Conference

Conference	1990 IEEE International Symposium on Electrical Insulation
Country/Territory	Canada
City	Toronto
Period	03/06/1990 → 06/06/1990

Bibliographical note

Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

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@inproceedings{2a1fcf9c85754399aa6c4fbf5b08c65f,

title = "Partial discharge patterns related to surface deterioration in voids in epoxy",

abstract = "Results are presented from an investigation of the relationship between changes in partial discharge patterns and the surface deterioration process taking place in small naturally formed spherical voids in epoxy plastic. The voids were exposed to a moderate electric stress above inception level, where partial discharges were present for more than 1500 h. Two types of electrical tree growth were found, the bush like tree and a single channel-like tree, which led to very different partial discharge patterns. It is concluded that the formation of crystals on a void surface leads to an immediate and easy-to-detect increase in the partial discharge activity with subsequent severe surface deterioration (deep pit formations) in the vicinity of the crystal. However, the partial discharge signal from a specimen with a black channel-like tree structure did not give any indication of channel growth",

author = "Joachim Holb{\o}ll and Mogens Henriksen",

note = "Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.; 1990 IEEE International Symposium on Electrical Insulation ; Conference date: 03-06-1990 Through 06-06-1990",

year = "1990",

doi = "10.1109/ELINSL.1990.109721",

language = "English",

pages = "115--119",

journal = "I E E E International Symposium on Electrical Insulation. Conference Record",

issn = "0164-2006",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Partial discharge patterns related to surface deterioration in voids in epoxy

AU - Holbøll, Joachim

AU - Henriksen, Mogens

N1 - Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PY - 1990

Y1 - 1990

N2 - Results are presented from an investigation of the relationship between changes in partial discharge patterns and the surface deterioration process taking place in small naturally formed spherical voids in epoxy plastic. The voids were exposed to a moderate electric stress above inception level, where partial discharges were present for more than 1500 h. Two types of electrical tree growth were found, the bush like tree and a single channel-like tree, which led to very different partial discharge patterns. It is concluded that the formation of crystals on a void surface leads to an immediate and easy-to-detect increase in the partial discharge activity with subsequent severe surface deterioration (deep pit formations) in the vicinity of the crystal. However, the partial discharge signal from a specimen with a black channel-like tree structure did not give any indication of channel growth

AB - Results are presented from an investigation of the relationship between changes in partial discharge patterns and the surface deterioration process taking place in small naturally formed spherical voids in epoxy plastic. The voids were exposed to a moderate electric stress above inception level, where partial discharges were present for more than 1500 h. Two types of electrical tree growth were found, the bush like tree and a single channel-like tree, which led to very different partial discharge patterns. It is concluded that the formation of crystals on a void surface leads to an immediate and easy-to-detect increase in the partial discharge activity with subsequent severe surface deterioration (deep pit formations) in the vicinity of the crystal. However, the partial discharge signal from a specimen with a black channel-like tree structure did not give any indication of channel growth

U2 - 10.1109/ELINSL.1990.109721

DO - 10.1109/ELINSL.1990.109721

M3 - Conference article

SN - 0164-2006

SP - 115

EP - 119

JO - I E E E International Symposium on Electrical Insulation. Conference Record

JF - I E E E International Symposium on Electrical Insulation. Conference Record

T2 - 1990 IEEE International Symposium on Electrical Insulation

Y2 - 3 June 1990 through 6 June 1990

ER -

Partial discharge patterns related to surface deterioration in voids in epoxy

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