Lightning shielding protection design and actualization of 1000-kV UHVAC overhead transmission line in China

Author

Yuan, Jun ; Yu, Zhanqing

Author_Institution

Dept. of Ultra-high Voltage Constr., State Grid Corp. of China, Beijing, China

fYear

2010

fDate

12-16 April 2010

Firstpage

1578

Lastpage

1581

Abstract

This paper introduced the lightning protection design of the first 1000-kV UHV transmission line in China. The analysis is based on the lightning leader propagation model by considering the lightning propagation process, which can consider the randomness of lightning process. The new phenomenon of middle-phase shielding failure was explained when two grounding wires are wide, and the side-phase shielding failure characteristics of 1000-kV ac transmission line were presented also. The measures to improve the effect of lightning protection of this UHV line are discussed, and the application is presented.

Keywords

earthing; failure analysis; lightning protection; power overhead lines; China; UHVAC overhead transmission line; failure characteristics; grounding wires; lightning propagation process; lightning shielding protection design; voltage 1000 kV; Conductors; Lightning protection; Optical propagation; Poles and towers; Power system modeling; Power system protection; Power transmission lines; Transmission lines; Voltage; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5621-5

Type

conf

DOI

10.1109/APEMC.2010.5475687

Filename

5475687