Flashover characteristics of long air gaps with negative switching impulses

被引：28

作者：

Taniguchi, Sakae ^{[1
]}

Okabe, Shigemitsu ^{[1
]}

Asakawa, Akira ^{[2
]}

Shindo, Takatoshi ^{[2
]}

机构：

[1] Tokyo Elect Power Co Ltd, Tsurumi Ku, Kanagawa 2308510, Japan

[2] Cent Res Inst Elect Power Ind, Kanagawa 2400196, Japan

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2008年 / 15卷 / 02期

关键词：

switching impulse; negative polarity; flashover characteristics; long air gap;

D O I：

10.1109/TDEI.2008.4483458

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The electrogeometric model (EGM) proposed by Armstrong and Whitehead has been used to calculate the lightning shielding features of transmission lines. While the striking distance equation in the EGM uses the 50% flashover voltage characteristics of negative switching impulses for rod-rod gaps, those characteristics for long air gaps have not been sufficiently examined. The present study has therefore focused on clarifying the 50% flashover characteristics of negative switching impulses for long air gaps. Consequently, saturating characteristics have been obtained for rod-plane gaps compared with almost linear characteristics for rod-rod and rod-conductor gaps. Furthermore, new knowledge was obtained indicating that, for air gaps of around 4 to 5 m, the 50% flashover voltage may possibly be lower for rod-plane gaps than for rod-rod and rod-conductor gaps.

引用

页码：399 / 406

页数：8

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