Study on overvoltage characteristics of lightning intrusion wave in 500kV GIS substation

Chonghao Fang; Zhe Chen; Pengfei Li; Lin Shen; Zixin Ma; Jie Guo

doi:10.1117/12.2611291

14 October 2021 Study on overvoltage characteristics of lightning intrusion wave in 500kV GIS substation

Chonghao Fang, Zhe Chen, Pengfei Li, Lin Shen, Zixin Ma, Jie Guo

Proceedings Volume 11930, International Conference on Mechanical Engineering, Measurement Control, and Instrumentation; 1193014 (2021) https://doi.org/10.1117/12.2611291
Event: International Conference on Mechanical Engineering, Measurement Control, and Instrumentation (MEMCI 2021), 2021, Guangzhou, China

Abstract

High amplitude and high steepness overvoltage caused by lightning intrusion wave in substation is an important factor threatening the insulation of equipment in the station. The characteristics of lightning overvoltage in a 500kV GIS substation of a nuclear power plant are analyzed in this paper. EMTP-RV software was used to build the model of transmission line and substation system, and the difference of lightning overvoltage characteristics of GIS power station under different lightning strike conditions was simulated and analyzed. The influence of arrester on the over-voltage characteristics of each equipment node in the station is compared. The results show that: Under the two conditions of lightning backflash flashover and shielding failure without flashover in the near area of the line, the invasion overvoltage is the most serious, and the arrester has an obvious effect on the suppression of lightning overvoltage.

Citation Download Citation

Chonghao Fang, Zhe Chen, Pengfei Li, Lin Shen, Zixin Ma, and Jie Guo "Study on overvoltage characteristics of lightning intrusion wave in 500kV GIS substation", Proc. SPIE 11930, International Conference on Mechanical Engineering, Measurement Control, and Instrumentation, 1193014 (14 October 2021); https://doi.org/10.1117/12.2611291

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