Lightning transient performance analysis of substation based on complete transmission line model of power network and grounding systems

Author

Zeng, Rong ; Kang, Peng ; He, Jinliang ; Zhang, Bo ; Chen, Shuiming ; Zou, Jun

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

875

Lastpage

878

Abstract

The grounding systems are simply handled as lumped resistances with constant values in traditional lightning transient analysis of substation. A complete transmission line model is proposed to consider the actual transient process of power network and the grounding grid of the substation and the grounding devices of transmission towers. A loss transmission line model with time-variable parameters is proposed to calculate the transient characteristics of grounding systems under lightning current in which the soil ionization phenomena around the ground conductors are considered. The analyzed results by the proposed model have large differences with those obtained by the traditional simplified method. The transient characteristics of grounding systems have strong influence on the lightning transient process of substation

Keywords

earthing; lightning protection; power transmission planning; substation protection; transient analysis; ground conductors; grounding system; lightning current; lightning transient process; power network; soil ionization phenomena; substation grounding grid; time-variable parameters; transient performance analysis; transmission line model; transmission towers; Grounding; Lightning; Performance analysis; Poles and towers; Power system modeling; Power system transients; Power transmission lines; Propagation losses; Substations; Transient analysis; Grounding system; lightning; soil ionization; substation; transient performance; transmission line model;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871462

Filename

1608346