Title :
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
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;
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
DOI :
10.1109/UPEC.2008.4651622
