Discharge of Air Gaps During Ground Potential Live-Line Work on Transmission Lines

被引：22

作者：

Gao, Jiachen ^{[1
]}

Wang, Linong ^{[1
]}

Li, Guanlin ^{[1
]}

Fang, Yaqi ^{[2
]}

Song, Bin ^{[1
]}

Xiao, Bin ^{[3
]}

Liu, Kai ^{[3
]}

机构：

[1] Wuhan Univ, Sch Elect Engn & Automat, Wuhan 430072, Peoples R China

[2] Hubei Univ Technol, Sch Elect & Elect Engn, Wuhan 430068, Peoples R China

[3] China Elect Power Res Inst, Wuhan 430076, Peoples R China

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2020年 / 187卷

关键词：

Air gap discharge; Breakdown voltage prediction; Discharge model; Live-line work; UHV transmission lines; SWITCHING IMPULSE STRENGTH; LEADER INCEPTION; MODEL; BREAKDOWN; TOWER; INSULATION;

D O I：

10.1016/j.epsr.2020.106519

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ground potential live-line work (GPLW) is a typical type of live-line work on transmission lines. In order to ensure the safety of live-line workers and reduce the consumption of test resources, the discharge of air gaps during GPLW on transmission lines was studied. Firstly, a breakdown voltage prediction method of GPLW air gaps was proposed, which can predict the breakdown voltage of GPLW air gaps. Subsequently, a discharge model of GPLW air gaps was proposed as well, so that the discharge characteristics of GPLW air gaps under different gap distances can be obtained more convenient. The prediction method and the discharge model were verified by switching impulse discharge tests of GPLW air gaps on UHV transmission lines, and the calculated results were close to the test results. Finally, the influence of live-line worker postures on discharge characteristics was studied. The results showed that workers should avoid causing protrusions of body parts in the course of work, which is more conducive to safety.

引用

页数：9

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