Simulation Analysis on lightning accident of Â±500kV DC transmission line based on ATP-EMTP

Author

Bin, YANG Li ; Wen-xia, SiMa ; Qing, Yang

Author_Institution

State Key Lab. of Power Transm. Equip., Chongqing Univ., Chongqing

fYear

2008

fDate

9-12 Nov. 2008

Firstpage

317

Lastpage

320

Abstract

This paper calculates and researches on lightning accident of plusmn500 kV XING-AN DC transmission line in GUANGDONG based on ATP-EMTP. The finding shows that: when a 34.5 kA lightning current strike to the positive polar conductor, the grounding electrode line would produce the unbalanced current as soon as the over-voltage arrived at the line end. The over-voltage wave cause the insulator of the grounding electrode line flashover on both side of the line, which would aggravate the unbalance current of the grounding polar lines and the unbalanced current causes the negative polar conductor atresia.

Keywords

DC transmission networks; earth electrodes; flashover; lightning protection; overvoltage protection; power system simulation; power transmission lines; power transmission protection; ATP-EMTP; DC transmission line; GUANGDONG; current 34.5 kA; flashover; grounding electrode; lightning accident; lightning current strike; over-voltages; positive polar conductor; simulation analysis; voltage -500 kV to 500 kV; Accidents; Analytical models; Conductors; Electrodes; Grounding; Insulation; Lightning; Power transmission lines; Transmission lines; Voltage; ATP-EMTP; DC transmission line; grounding electrode line; insulator flashover; polar conductor atresia; unbalanced current;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application, 2008. ICHVE 2008. International Conference on

Conference_Location

Chongqing

Print_ISBN

978-1-4244-3823-5

Electronic_ISBN

978-1-4244-2810-6

Type

conf

DOI

10.1109/ICHVE.2008.4773937

Filename

4773937