A testing research on the effect of conductive backfill on reducing grounding resistance under lightning

Author

Hu, Wentang ; Yu, Shaofeng ; Cheng, Rui ; He, Jinliang

Author_Institution

Zhejiang Electr. Power Test & Res. Inst., Hangzhou, China

fYear

2012

fDate

2-7 Sept. 2012

Firstpage

1

Lastpage

4

Abstract

An outdoor field testing is carried out to research on the effect of conductive backfill on reducing the impulse grounding resistance. The question whether and why the effect under lightning condition is different from that under power frequency condition is concerned. Based on the testing results, the effect of conductive backfill under lightning condition is compared with that under power frequency condition. It is concluded that ionization is also an important factor besides resistivity that affect the effect of reducing grounding resistance under lightning condition. But the effect of the conductive backfill on reducing the grounding resistance under lightning condition is hard to compare with that under power frequency condition quantitatively.

Keywords

earthing; electrical resistivity; ionisation; lightning protection; testing; conductive backfill effect; field testing; grounding resistance reduction; impulse grounding resistance; ionization; lightning; power frequency; resistivity; Current measurement; Grounding; Lightning; Resistance; Testing; Field Testing; conductive backfill; grounding; lightning;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2012 International Conference on

Conference_Location

Vienna

Print_ISBN

978-1-4673-1898-3

Electronic_ISBN

978-1-4673-1896-9

Type

conf

DOI

10.1109/ICLP.2012.6344300

Filename

6344300