Research on live working of tower with V-type insulator extending to tower body for ±800kV UHVDC transmission line

Author

Ding Yu-jian ; Sun Hui ; Zhao Jiang-tao ; Zhou Jun ; Liao Wei-ming ; Mao Yan

fYear

2014

fDate

20-22 Oct. 2014

Firstpage

2134

Lastpage

2140

Abstract

For the specific 4 towers with V-type insulator extending to tower body for Hami-Zhengzhou ± 800kV UHVDC transmission project, live working security analysis is carried out, the required minimum safe distance and the minimum combined gap distance under various working conditions are calculated, which determines the way to getting in and out of the equipotential of the tower with V-type insulator extending to tower body, in addition, the safety distance is also checked under the condition of different working locations, according to the checked results, appropriate measures are proposed to take when the air gap distance does not meet the risk rate requirement, which makes a great significance for the operation, maintenance and spreading of tower with V-type insulator extending to tower body.

Keywords

HVDC power transmission; air gaps; employee welfare; insulators; poles and towers; power transmission lines; power transmission protection; Hami-Zhengzhou; UHVDC transmission line; V-type insulator; air gap distance; live working security analysis; minimum combined gap distance; minimum safe distance; risk rate requirement; tower body; working conditions; working locations; Conductors; Discharges (electric); Insulators; Poles and towers; Power transmission lines; Safety; Voltage control; ±800kV UHVDC transmission line; V-type insulator extending to tower body; live working; operation in reduced voltage; protective gap; safety distance;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology (POWERCON), 2014 International Conference on

Conference_Location

Chengdu

Type

conf

DOI

10.1109/POWERCON.2014.6993595

Filename

6993595