Title :
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
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;
Conference_Titel :
Lightning Protection (ICLP), 2014 International Conference o
Conference_Location :
Shanghai
DOI :
10.1109/ICLP.2014.6973226
