Lightning Performance of MV Underground Cables with Shield Wire

被引：0

作者：

Omidiora, Michael A. ^{[1
]}

Lehtonen, Matti ^{[1
]}

机构：

[1] Helsinki Univ Technol, Dept Elect Engn, TKK, FIN-02150 Espoo, Finland

来源：

PRZEGLAD ELEKTROTECHNICZNY | 2010年 / 86卷 / 03期

关键词：

Shield wire (SW); FEM (finite element method); lightning discharge; ground flash density (GFD); electric field intensity; underground cable (UC); overvoltage; soil resistivity;

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：

Lightning protection of medium voltage underground cables is studied in this paper. Simulation of an underground cable with a shield wire is made to investigate protection against lightning discharges around the cable. The performance of the protection scheme is investigated with the Finite Element Method (FEM) considering different soil structures and resistivities. Finally, the failure rates of the underground cable with and without a shield wire are compared based on the real lightning statistics in Finland. It is expected that the results will further understanding of the need for lightning protection on medium voltage underground cables.

引用

页码：69 / 71

页数：3