Lightning performance of 275 kV transmission lines

Author

Bhattarai, R. ; Rashedin, R. ; Venkatesan, S. ; Haddad, A. ; Griffiths, H. ; Harid, N.

Author_Institution

High Voltage Energy Syst. Group, Cardiff Univ., Cardiff

fYear

2008

fDate

1-4 Sept. 2008

Firstpage

1

Lastpage

5

Abstract

This paper presents a comparative lightning performance study conducted on a 275 kV double circuit shielded transmission line using two software programs, TFlash and Sigma-Slp. The line performance was investigated by using both a single stroke and a statistical performance analysis and considering cases of shielding failure and backflashover. A sensitivity analysis was carried out to determine the relationship between the flashover rate and the parameters influencing it. To improve the lightning performance of the line, metal oxide surge arresters were introduced using different phase and line locations. Optimised arrester arrangements are proposed.

Keywords

arresters; electromagnetic shielding; flashover; lightning protection; power engineering computing; power transmission lines; power transmission protection; sensitivity analysis; statistical analysis; Sigma-Slp software program; TFlash software program; backflashover; double circuit shielded transmission line; lightning protection; metal oxide surge arrester; sensitivity analysis; statistical performance analysis; voltage 275 kV; Arresters; Circuits; Conductors; Flashover; Hydrogen; Lightning; Poles and towers; Surges; Transmission lines; Voltage; Electrogeometric modelling; Lightning Overvoltages; Sensitivity Analysis; Statistical Analysis; Surge Arrester;

fLanguage

English

Publisher

ieee

Conference_Titel

Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International

Conference_Location

Padova

Print_ISBN

978-1-4244-3294-3

Electronic_ISBN

978-88-89884-09-6

Type

conf

DOI

10.1109/UPEC.2008.4651622

Filename

4651622