Study on the breakdown characteristics of multiple-reignition secondary arcs on EHV/UHV transmission lines

Li, Runchang and Liu, Hongshun and Lou, Xiaoxuan and Song, Ping and Hou, Weihong and Dai, Shiqiang and Shi, Yuchao and Jin, Gongyu and Siew, Wah Hoon and Li, Qingmin (2023) Study on the breakdown characteristics of multiple-reignition secondary arcs on EHV/UHV transmission lines. IEEE Transactions on Plasma Science, 51 (4). pp. 1164-1172. ISSN 0093-3813 (https://doi.org/10.1109/TPS.2023.3252799)

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Abstract

A long-gap AC arc with a length of more than ten meters (secondary arc) are normally generated at the short-circuit arc channel after a single-phase-to-ground fault. In previous studies, arc breakdowns of secondary arcs have mainly been considered as electrical breakdowns, ignoring the role of heat in the arc channel. Besides, the extinction-reignition theory of secondary arc, i.e., dielectric strength recovery theory, still lack the support of experimental data. In this study, based on the equivalent experiments performed in the laboratory, the influences of compensation degree of transmission lines, initial recovery voltage gradient of air gap, test current, wind speed, and wind direction on the breakdown characteristics of secondary arcs are studied and statistically analyzed. The laws of the transient recovery voltage (TRV) and of the rate of rise of recovery voltage (RRRV) also studied by considering the influencing factors mentioned above. The results of this study will provide a more complete experimental basis for the theory of extinction–reignition of secondary arcs and a deeper understanding of the transient characteristics of arc breakdown

  • Item type:Article
    ID code:84594
    Dates:
    Date
    Event
    25 April 2023
    Published
    14 March 2023
    Published Online
    1 March 2023
    Accepted
    Notes:© 2023 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:08 Mar 2023 10:01
    Last modified:22 Apr 2024 00:55
    URI:https://strathprints.strath.ac.uk/id/eprint/84594
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