Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5621-5
DOI :
10.1109/APEMC.2010.5475687
