A method for calculating the breakdown voltages of long air gaps in transmission lines: evaluation of the lightning performance of transmission lines using no shield wire

Author

Alexandrov, G.N. ; Podporkyn, G.V. ; Shevchenko, S.Yu.

Author_Institution

Leningrad Polytech. Inst., USSR

fYear

1988

fDate

12-16 Sep 1988

Firstpage

160

Abstract

The possibility of abandoning the shield wire on EHV-UHV transmission lines has been examined. Insulation lengths required to obtain an acceptable lightning performance of lines have been determined. Experimental data indicate that unshielded lines can be built using conventional metal or ferroconcrete towers and lengthened insulator strings. However, the highest cost efficiency is achieved with towers made of insulating concrete or composite polymeric elements, since this substantially reduces the tower height and thus the consumption of materials

Keywords

electric breakdown of gases; poles and towers; power overhead lines; EHV transmission lines; UHV transmission lines insulating towers; breakdown voltages; composite polymeric elements; consumption of materials; cost efficiency; insulating concrete; insulator strings; lightning performance; long air gaps; shield wire; tower height; transmission lines; unshielded lines; Air gaps; Concrete; Costs; Lightning; Metal-insulator structures; Plastic insulation; Poles and towers; Polymers; Transmission lines; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38358

Filename

38358