Numerical electromagnetic field analysis of tower surge response

Author

Ishii, Masaru ; Baba, Yoshihiro

Author_Institution

Tokyo Univ., Japan

Volume

12

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

483

Lastpage

488

Abstract

Tower surge responses are computed by the numerical electromagnetic code. The code used in this paper is not the one based on the circuit theory such as the Electromagnetic Transients Program (EMTP), but the one that solves the electric field equations directly by the moment method. The accuracy of this method is shown to be satisfactory by comparison with experimental results that were carried out on an actual UHV tower as well as reduced-scale models. And then by using this method, the influences of tower elements such as slant elements, horizontal elements and crossarms on the tower surge characteristics are investigated. In addition, the surge impedance of a full-sized tower hit directly by a lightning stroke is discussed

Keywords

electric fields; electromagnetic fields; lightning protection; poles and towers; power transmission lines; surges; UHV tower; crossarms; direct lightning stroke; electric field equations; horizontal elements; moment method; numerical electromagnetic code; numerical electromagnetic field analysis; reduced-scale models; slant elements; tower elements influence; tower surge characteristics; tower surge response; Circuit theory; EMTP; Electromagnetic analysis; Electromagnetic fields; Equations; Impedance; Lightning; Moment methods; Poles and towers; Surges;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.568275

Filename

568275