Impulsive breakdown characteristics of solid-gas interfaces

Wang, Zhe and Timoshkin, Igor V. and Wilson, Mark P. and Given, Martin J. and Wang, Tao and MacGregor, Scott J. (2021) Impulsive breakdown characteristics of solid-gas interfaces. IEEE Transactions on Plasma Science, 49 (1). pp. 365-377. ISSN 0093-3813 (https://doi.org/10.1109/TPS.2020.3039722)

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Abstract

Comprehensive knowledge and understanding of the breakdown behavior of solid-gas interfaces are important for the development, optimization, and coordination of insulation in practical high-voltage (HV) gas-insulated systems (GISs) that are widely used in the power and pulsed power industries. However, despite significant research efforts focused on the characterization of the breakdown parameters and properties of complex gas-filled HV systems, the basic mechanisms that underpin the development of discharges in such solid-gas topologies are not fully understood. This lack of knowledge is particularly noticeable in the case of solid-gas interfaces stressed with HV impulses. This study is aimed at the experimental investigation of the breakdown behavior of solid-gas interfaces, formed between solid dielectrics and common gases: dry air, N2, and CO2 at atmospheric pressure. Four different solid-dielectric materials, PTFE, HDPE, Delrin, and Macor, with relative permittivities in the range from 2.1 to 6.3, were used in this work. The solid-gas interfaces formed by these dielectric materials and the surrounding gases were stressed with positive and negative HV impulses. The breakdown voltage and time to breakdown were obtained for all combinations of solid-gas interfaces using both positive and negative impulses, with a nominal rise time of A digital camera operated in the open-shutter regime was used to obtain images of the breakdown spark channels that were classified according to their propagation paths. The results obtained in this study will help in further understanding of the breakdown behavior of solid-gas interfaces and can be used in the development and optimization of dielectric topologies for use in GISs.

  • Item type:Article
    ID code:75405
    Dates:
    Date
    Event
    11 January 2021
    Published
    7 December 2020
    Published Online
    13 November 2020
    Accepted
    Notes:© 2021 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:15 Feb 2021 11:48
    Last modified:11 Apr 2024 02:07
    URI:https://strathprints.strath.ac.uk/id/eprint/75405
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