Simulation study on transient performance of lightning over-voltage of transmission lines

Author

Zhao, Zihui ; Dang, Dong ; Wu, Guangning ; Cao, Xiaobin ; Zhu, Jun ; Chen, Li ; Hu, Jinsong

Author_Institution

Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China

fYear

2011

fDate

1-4 Nov. 2011

Firstpage

520

Lastpage

524

Abstract

As the rapid development of EHV/UHV Power System towards high capacity and long distance, lightning fault has become the chief factor that affects the safe operation of transmission lines. In-depth research on the nature of transmission lines lightning accidents and precise evaluation of the lightning overvoltage performance of transmission line are extremely significant. In this paper, the lightning strike procedure of a 500kV transmission line is simulated using PSCAD/EMTDC, the transient performance of transmission line is analyzed respectively under three situations: return-stroke, shielding failure and no fault occurs. The waveform characteristic and change rule of overvoltage at strike point and transmitting in transmission line in these three cases are analyzed.

Keywords

EMTP; electrical accidents; lightning protection; overvoltage protection; power system CAD; power transmission faults; power transmission lines; power transmission protection; EHV-UHV power system; PSCAD-EMTDC simulation; lightning fault; lightning overvoltage performance; lightning strike procedure; no fault occur situation; return-stroke situation; shielding failure situation; transmission lines lightning accident; voltage 500 kV; waveform characteristic; Conductors; Impedance; Insulators; Lightning; Poles and towers; Power transmission lines; Voltage control; overvoltage; return-stroke; shielding failure; transient characteristics; transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning (APL), 2011 7th Asia-Pacific International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4577-1467-2

Type

conf

DOI

10.1109/APL.2011.6110180

Filename

6110180