Lightning Performance of Grounding of Overhead Power Distribution Lines

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  • Yokoyama Shigeru
    Department of Electrical and Electronic Engineering, Graduate School of Engineering, Shizuoka University

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  • 雷サージに対する配電線接地の挙動
  • ライ サージ ニ タイスル ハイデンセン セッチ ノ キョドウ

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This article reviews the effect of grounding resistance upon lightning performance of overhead power distribution lines (OPDLs). Good performance of lightning protection can be got by lower grounding resistance of OPDLs with surge arresters only. On the other hand the value of grounding resistance is not important for lightning protection for OPDLs with surge arresters and an overhead ground wire. Flashover in insulators does not occur by grounding potential rise but overvoltages in an insulator itself.

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