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

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Zhao, Weijia and Siew, Wah Hoon and Given, Martin J. and Li, Qingmin and He, Jinliang (2019) Ageing indices and energy delivery for polymers undergoing PD activity under combined AC and DC stress. IEEE Transactions on Dielectrics and Electrical Insulation, 26 (6). pp. 1903-1910. ISSN 1070-9878 (https://doi.org/10.1109/TDEI.2019.008211)

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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.

ORCID iDs

Zhao, Weijia ORCID logoORCID: https://orcid.org/0000-0002-3055-7665, Siew, Wah Hoon ORCID logoORCID: https://orcid.org/0000-0003-4000-6856, Given, Martin J. ORCID logoORCID: https://orcid.org/0000-0002-6354-2486, Li, Qingmin and He, Jinliang;
  • Item type:Article
    ID code:69744
    Dates:
    Date
    Event
    15 December 2019
    Published
    4 December 2019
    Published Online
    21 August 2019
    Accepted
    2 April 2019
    Submitted
    Notes:© 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.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:11 Sep 2019 09:27
    Last modified:11 Nov 2024 11:43
    URI:https://strathprints.strath.ac.uk/id/eprint/69744
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