Estimation of the Influence of Direct strokes on the Lightning Performance of Overhead Distribution Lines

被引：0

作者：

Tossani, F. ^{[1
]}

Napolitano, F. ^{[1
]}

Borghetti, A. ^{[1
]}

Nucci, C. A. ^{[1
]}

Lopes, G. P. ^{[2
]}

Martinez, M. L. B. ^{[2
]}

dos Santos, G. J. G. ^{[3
]}

机构：

[1] Univ Bologna, I-40126 Bologna, Italy

[2] Univ Fed Itajuba, Itajuba, Brazil

[3] AES Sul, Porto Alegre, RS, Brazil

来源：

2015 IEEE EINDHOVEN POWERTECH | 2015年

关键词：

distribution network; lightning protection; induced voltages; direct strokes;

D O I：

暂无

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：

When assessing the lightning performance of distribution lines, major attention is in general devoted to the induced voltages from nearby strikes rather than to direct events hitting the line, as the latter are always expected to cause a fault in the line. This paper proposes a Monte Carlo procedure capable to make it possible the evaluation of the overvoltage probability due to both indirect and direct strokes. The results are presented making reference to specific nodes of medium voltage overhead distribution networks, namely the locations of MV/LV transformers connections. The problem is of interest when a major upgrade of surge arresters is required, for instance when the neutral grounding practice needs to be changed (e.g. from grounded to resonant).

引用

页数：7

共 16 条

[1] TRANSIENT-RESPONSE OF MULTI-CONDUCTOR TRANSMISSION-LINES EXCITED BY A NONUNIFORM ELECTROMAGNETIC-FIELD [J].