等価直列抵抗の周波数特性による送電用避雷装置の故障判定方法の提案

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概要

• 論文の詳細を見る

• About 70% of overhead transmission line faults have been caused by natural forces. Above all, more than 60% of those faults are due to lightning. As transmission line arresters (TLAs) are effective to prevent the faults caused by lightning, we have installed them in many of our transmission lines. Nevertheless, TLAs have been damaged by a very large electric charge of lightning, particularly in winter. Through investigation of the damaged TLAs collected from our transmission lines, we found some of the internal zinc oxide (ZnO) elements of TLAs were damaged. But it is difficult to detect those damaged TLAs by the conventional measurement of insulation resistance between terminals of TLAs. Therefore, this paper proposes a new detection method for the damaged TLAs using the frequency characteristics of its equivalent series resistance. The detection rate of the damaged TLAs by the new method is remarkably higher than that by the conventional method.

著者

• 杉本 仁志

  北陸電力（株）技術開発研究所

• 杉本 仁志

  北陸電力（株） 技術開発研究所

• 小塚 正裕

  北陸電力（株）技術開発研究所

• 板本 直樹

  北陸電力（株）技術開発研究所

関連論文

• 配電線下方に施設する架空地線の避雷器雷焼損の抑制効果
• 大電流特性を考慮した配電用棒状接地電極の接地抵抗解析モデルの開発
• 等価直列抵抗の周波数特性による送電用避雷装置の故障判定方法の提案

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