Research on lightning performance of insulated ground wire in 500kV extra high voltage transmission line

Author

Yutang Ma ; Kui Chen ; Yi Ma ; Lei Wang ; Xiaobin Cao

Author_Institution

Electr. Power Res. Inst., Yunnan Electr. Power Test Inst. (group) Co. Ltd., Kunming, China

fYear

2014

fDate

11-18 Oct. 2014

Firstpage

768

Lastpage

771

Abstract

Direct Current (DC) melting ice is one of the effective measures to solve overhead transmission line icing. Insulated ground wire becomes precondition of DC melting ice. Electric performance of ground wire must meet the normal operation, melting ice operation and lightning protection of transmission line after its insulation. In this paper, the actual insulated ground wire of 500kV extra high voltage transmission line is taken as research object. The relativity between the number of insulated ground wire gap breakdown and lightning amplitude are analyzed using EMTP simulation software. Lightning protection performance of 500 kV transmission line changes little after its insulated ground wire for DC melting ice. It has a certain reference to run insulated ground wire.

Keywords

electric breakdown; insulated wires; lightning protection; power overhead lines; relativity; DC melting ice; EMTP simulation software; direct current melting ice; electric performance; extra high voltage transmission line; insulated ground wire gap breakdown; lightning amplitude; lightning protection; overhead transmission line icing; relativity; voltage 500 kV; Electric breakdown; Grounding; Lightning; Poles and towers; Power transmission lines; Resistance; Wires; EMTP; insulated ground wire; insulated ground wire gap; lightning amplitude;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2014 International Conference o

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICLP.2014.6973226

Filename

6973226