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

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


研究成果: Article査読

15 被引用数 (Scopus)


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.

ジャーナルIEEJ Transactions on Power and Energy
出版ステータスPublished - 2010 7月 15

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 電子工学および電気工学


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