報告書番号

682005

タイトル（和文）

複数連がいしの汚損耐電圧特性

タイトル（英文）

AC FLASHOVER VOLTAGE CHARACTERISTICS OF CONTAMINATED INSULATORS WITH PARALLEL STRINGS

概要 （図表や脚注は「報告書全文」に掲載しております）

複数連がいしの汚損耐電圧特性を，等価霧中法により，試験を行ない，耐電圧値ならびにがいし連間隔などの影響について以下にとりまとめた。（１）２連吊りおよび４連吊りの５％フラッシオーバ電圧は単連吊りに対し５％ならびに１０％低くなった。（２）４２トン懸垂がいしの２連吊りにおいてがいし連間隔（５００ｍｍ，６００ｍｍおよび７４５ｍｍ）がフラッシオーバ電圧におよぼす影響はほとんど認められなかった。（３）（１）項の４連吊りがいし装置の形態を段違い吊りにすることによって単連吊りの耐電圧と同等に向上させることができた。

概要 （英文）

AC FLASHOVER VOLTAGE TESTS BY EQUIVALENT FOGMETHOD WERE CARRIED OUT ON THE ARTIFICIALLY CONTAMINATED INSULATORS WITH PARALLEL MULTISTRINGS.INFLUENCE ON FLASHOVER VOLTAGE OF NUMBER OF INSULATOR STRINGS AND SPACING BETWEEN INSULATOR STRINGS HAVE BEEN INVESTIGATED. THE MAIN POINTS OF TEST RESULTS ARE SUMMARIZED AS FOLLOWS: (1) FLASHOVER VOLTAGE OF CONTAMINATED INSULATORS OF TWO AND FOUR PARALLEL STRINGS ARC 5% AND 10% LOWER THAN THAT OF SINGLE STRING RESPECTIVELY. (2)IN THE CASE OF DOUBLE STRINGS OF 42 TON SUSPENSION INSULATORS,EFFECT ON FLASHOVER VOLTAGE OF SPACING BETWEEN INSULATOR STRINGS IN A RANGE FROM 500MM TO 645MM AND 745MM IS NOT RECOGNIZED. (3) FLASHOVER VOLTAGE OF FOUR PARALLEL CONTAMINATED INSULATOR STRINGS ASSEMBLY IS AFFECTED BY INSULATOR STRING CONFIGURATION. IT IS CONSIDERED THAT FLASHOVER VOLTAGE OF MULTI INSULATOR STRINGS HAS BEEN IMPROVED BY INVENTION OF DISPOSITIONOF INSULATOR STRING.

報告者

キーワード