Title :
Simulation Analysis on lightning accident of ±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
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;
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
DOI :
10.1109/ICHVE.2008.4773937
