Analysis of the effect of lightning on the energized shield wire line technology

Author

Ramos, J.E. ; Pires, V.A. ; Piantini, A. ; Obase, P.F. ; Neto, A. Silva ; de Carvalho, T.O. ; De Oliveira, Paulo R Borges

Author_Institution

Eletrobras Distribuicao Rondonia, Porto Velho, Brazil

fYear

2011

fDate

3-7 Oct. 2011

Firstpage

216

Lastpage

220

Abstract

This paper examines the effect of lightning overvoltages resulting from direct strikes to the two SWL (energized shield wire line technology) systems located in the State of Rondônia, Brazil, with the aim of understanding how lightning affects the SWL system. The analysis covers the periods from 1996 to 2000 (Jaru SWL) and from 1997 to 2007 (Itapuã do Oeste SWL). Field measurements were carried out regarding both soil resistivity and tower footing resistance, as well as laboratory tests to determine the positive and negative critical impulse flashover voltage (CFO) of insulator strings. The influence of soil ionization is also considered.

Keywords

flashover; insulators; lightning; overvoltage; poles and towers; power distribution lines; power transmission lines; CFO; energized SWL technology system; energized shield wire line technology system; insulator string; laboratory testing; lightning overvoltage effect analysis; negative critical impulse flashover voltage; power distribution line; soil ionization influence; soil resistivity; tower footing resistance; SWL technology; direct strokes; lightning performance; power distribution line; power supply interruptions;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (XI SIPDA), 2011 International Symposium on

Conference_Location

Fortaleza

Print_ISBN

978-1-4577-1898-4

Type

conf

DOI

10.1109/SIPDA.2011.6088423

Filename

6088423