Effect of voltage reduction in minimising partial discharge activity in cables - experimental study

Mohamed, Faisal Peer and Siew, W. H. and Sheng, Bojie and Stewart, Brian; (2018) Effect of voltage reduction in minimising partial discharge activity in cables - experimental study. In: CEIDP 2017 - IEEE Conference on Electrical Insulation and Dielectric Phenomenon. IEEE, USA, pp. 331-334. ISBN 9781538611944 (https://doi.org/10.1109/CEIDP.2017.8257515)

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Abstract

A common cause of insulation degradation in high voltage (HV) cables is due to partial discharges (PD). PD may be initiated through imperfections and contaminants present in the insulation. It can be hypothesized that a reduction in system voltage can potentially reduce PD, which will correspondingly extend the service life of the cable. Currently, industry voltage statutory requirements permit ±6% tolerance setting on nominal voltage on distribution networks. Such ±6% voltage reduction on may have little or adverse effect on PD magnitude which depends on the nature of defect. Hence the accuracy and type of measuring PD while reducing system voltage is more critical for this application. Power cable as a low pass filter which attenuates and disperse the PD pulses. In this paper effect of voltage reduction on PD is investigated using standard electrode geometries such as point-plane, point-point and point- rod using IEC60270 measurement system together with frequency domain measurements. It has been observed that PD frequency characteristics at different voltages varies in the wideband frequency spectrum.

ORCID iDs

Mohamed, Faisal Peer, Siew, W. H. ORCID logoORCID: https://orcid.org/0000-0003-4000-6856, Sheng, Bojie ORCID logoORCID: https://orcid.org/0000-0002-2878-7066 and Stewart, Brian;
  • Item type:Book Section
    ID code:64611
    Dates:
    Date
    Event
    12 January 2018
    Published
    12 September 2017
    Accepted
    Notes:© 2018 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:27 Jun 2018 08:36
    Last modified:20 Nov 2024 01:32
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/64611
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