Experimental study on influence of distribution line support system on flashover characteristics

Shozo Sekioka, Tomoyuki Hayashi, Teru Miyazaki, Yoshiki Sakamoto, Shigemitsu Okabe

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This paper describes experimental results of flashover characteristics of medium-voltage insulators to support an insulated cable which is used in Japanese power distribution lines. The experimental study is targeted for direct lightning strokes to a shielding wire or top of a reinforced concrete pole in the distribution line. Lightning impulse voltage is applied to a metallic cross arm to represent the direct lightning stroke. 50% flashover voltage, voltage vs. flashover time characteristic and a photograph of the discharge are measured. This paper investigates the flashover characteristics of three types of cable support system such as suspension support, dead-end support and strain support. The flashover characteristics are dependent on the supporting system. Surface discharge on the insulated cable due to the flashover is observed, causes the discrepancy of the flashover characteristics. This paper presents constants in the integration method, which is a flashover model and can consider the influence of applied voltage waveform in order for accurate lightning surge analysis.

Original languageEnglish
JournalIEEJ Transactions on Power and Energy
Volume130
Issue number6
DOIs
Publication statusPublished - 2010 Jul 15
Externally publishedYes

Fingerprint

Flashover
Lightning
Electric potential
Cables
Surface discharges
Shielding
Reinforced concrete
Poles
Wire

Keywords

  • Distribution line
  • Flashover
  • Insulated cable
  • Insulator
  • Lightning surge

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Experimental study on influence of distribution line support system on flashover characteristics. / Sekioka, Shozo; Hayashi, Tomoyuki; Miyazaki, Teru; Sakamoto, Yoshiki; Okabe, Shigemitsu.

In: IEEJ Transactions on Power and Energy, Vol. 130, No. 6, 15.07.2010.

Research output: Contribution to journalArticle

Sekioka, Shozo ; Hayashi, Tomoyuki ; Miyazaki, Teru ; Sakamoto, Yoshiki ; Okabe, Shigemitsu. / Experimental study on influence of distribution line support system on flashover characteristics. In: IEEJ Transactions on Power and Energy. 2010 ; Vol. 130, No. 6.
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