Ageing indices and energy delivery for polymers undergoing PD activity under combined AC and DC stress

Weijia Zhao; Wah Hoon Siew; Martin J. Given; Qingmin Li; Jinliang He

doi:10.1109/TDEI.2019.008211

Ageing indices and energy delivery for polymers undergoing PD activity under combined AC and DC stress

Weijia Zhao, Wah Hoon Siew, Martin J. Given, Qingmin Li, Jinliang He

Electronic And Electrical Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

Samples of polypropylene and high density polyethylene have been exposed to partial discharge activity at elevated temperatures under the influence of combined AC and DC stresses in the range of 1 and 2.5 kHz. Based on FTIR-ATR and dielectric spectroscopy data values for the carbonyl index (CI), the low frequency conductivity (σ 0 ) and a proposed new index the susceptibility index (χI) have been calculated to characterize the degree of ageing in the samples. The susceptibility index reflects changes in the number of dipoles and the distribution of dipole moments in the system as a result of ageing. The rate of energy delivery from the partial discharge activity has also been calculated and has been found to be dependent on the frequency of the AC component of the stress. Strong correlations are observed between the behavior of the individual indices and the rate of energy delivery. Possible reasons for these observed correlations are discussed and the observed differences in the behavior of the ageing under different experimental conditions are considered.

Original language	English
Pages (from-to)	1903-1910
Number of pages	8
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	26
Issue number	6
Early online date	4 Dec 2019
DOIs	https://doi.org/10.1109/TDEI.2019.008211
Publication status	Published - 15 Dec 2019

Keywords

Partial discharge (PD)
electrothermal aging
combined AC and DC aging
aging indices
High Density Polyethylene

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10.1109/TDEI.2019.008211

Zhao-etal-TDEI-2019-Ageing-indices-and-energy-delivery-for-polymers-undergoing-PD-activityAccepted author manuscript, 742 KB

Martin Given
- m.givenstrath.acuk
- Electronic And Electrical Engineering - Senior Lecturer
Person: Academic

Cite this

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title = "Ageing indices and energy delivery for polymers undergoing PD activity under combined AC and DC stress",

abstract = "Samples of polypropylene and high density polyethylene have been exposed to partial discharge activity at elevated temperatures under the influence of combined AC and DC stresses in the range of 1 and 2.5 kHz. Based on FTIR-ATR and dielectric spectroscopy data values for the carbonyl index (CI), the low frequency conductivity (σ 0 ) and a proposed new index the susceptibility index (χI) have been calculated to characterize the degree of ageing in the samples. The susceptibility index reflects changes in the number of dipoles and the distribution of dipole moments in the system as a result of ageing. The rate of energy delivery from the partial discharge activity has also been calculated and has been found to be dependent on the frequency of the AC component of the stress. Strong correlations are observed between the behavior of the individual indices and the rate of energy delivery. Possible reasons for these observed correlations are discussed and the observed differences in the behavior of the ageing under different experimental conditions are considered.",

keywords = "Partial discharge (PD), electrothermal aging, combined AC and DC aging, aging indices, High Density Polyethylene",

author = "Weijia Zhao and Siew, {Wah Hoon} and Given, {Martin J.} and Qingmin Li and Jinliang He",

note = "{\textcopyright} 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",

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T1 - Ageing indices and energy delivery for polymers undergoing PD activity under combined AC and DC stress

AU - Zhao, Weijia

AU - Siew, Wah Hoon

AU - Given, Martin J.

AU - Li, Qingmin

AU - He, Jinliang

N1 - © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2019/12/15

Y1 - 2019/12/15

N2 - Samples of polypropylene and high density polyethylene have been exposed to partial discharge activity at elevated temperatures under the influence of combined AC and DC stresses in the range of 1 and 2.5 kHz. Based on FTIR-ATR and dielectric spectroscopy data values for the carbonyl index (CI), the low frequency conductivity (σ 0 ) and a proposed new index the susceptibility index (χI) have been calculated to characterize the degree of ageing in the samples. The susceptibility index reflects changes in the number of dipoles and the distribution of dipole moments in the system as a result of ageing. The rate of energy delivery from the partial discharge activity has also been calculated and has been found to be dependent on the frequency of the AC component of the stress. Strong correlations are observed between the behavior of the individual indices and the rate of energy delivery. Possible reasons for these observed correlations are discussed and the observed differences in the behavior of the ageing under different experimental conditions are considered.

AB - Samples of polypropylene and high density polyethylene have been exposed to partial discharge activity at elevated temperatures under the influence of combined AC and DC stresses in the range of 1 and 2.5 kHz. Based on FTIR-ATR and dielectric spectroscopy data values for the carbonyl index (CI), the low frequency conductivity (σ 0 ) and a proposed new index the susceptibility index (χI) have been calculated to characterize the degree of ageing in the samples. The susceptibility index reflects changes in the number of dipoles and the distribution of dipole moments in the system as a result of ageing. The rate of energy delivery from the partial discharge activity has also been calculated and has been found to be dependent on the frequency of the AC component of the stress. Strong correlations are observed between the behavior of the individual indices and the rate of energy delivery. Possible reasons for these observed correlations are discussed and the observed differences in the behavior of the ageing under different experimental conditions are considered.

KW - Partial discharge (PD)

KW - electrothermal aging

KW - combined AC and DC aging

KW - aging indices

KW - High Density Polyethylene

U2 - 10.1109/TDEI.2019.008211

DO - 10.1109/TDEI.2019.008211

M3 - Article

SN - 1070-9878

VL - 26

SP - 1903

EP - 1910

JO - IEEE Transactions on Dielectrics and Electrical Insulation

JF - IEEE Transactions on Dielectrics and Electrical Insulation

IS - 6

ER -

Ageing indices and energy delivery for polymers undergoing PD activity under combined AC and DC stress

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