Title :
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
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;
Conference_Titel :
Lightning (APL), 2011 7th Asia-Pacific International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4577-1467-2
DOI :
10.1109/APL.2011.6110180
