TY - JOUR
T1 - Study on the breakdown characteristics of multiple-reignition secondary arcs on EHV/UHV transmission lines
AU - Li, Runchang
AU - Liu, Hongshun
AU - Lou, Xiaoxuan
AU - Song, Ping
AU - Hou, Weihong
AU - Dai, Shiqiang
AU - Shi, Yuchao
AU - Jin, Gongyu
AU - Siew, Wah Hoon
AU - Li, Qingmin
N1 - © 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.
PY - 2023/4/25
Y1 - 2023/4/25
N2 - 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
AB - 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
KW - secondary arc
KW - extinction theory
KW - arc breakdown
KW - multiple reignition
KW - single-phase-to-ground fault
U2 - 10.1109/TPS.2023.3252799
DO - 10.1109/TPS.2023.3252799
M3 - Article
SN - 0093-3813
VL - 51
SP - 1164
EP - 1172
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 4
ER -