高电压技术2018，Vol.44Issue(8)：2472-2478,7.DOI:10.13336/j.1003-6520.hve.20180731006
高速气流灭弧防雷方法熄灭直流电弧的有效性
Effectiveness of High-speed Airflow Arc-extinguishing Anti-thunder Gap to DC Arc-extinguishing
摘要
Abstract
In order to solve the problem of lightning flashover caused by DC transmission line trip, we established a high-speed airflow velocity shock model, analyzed the force situation of DC arc motion, and derived the extinguishing conditions of DC arc Moreover, by analying the model and using the FLUNET software, we simulated and analyzed the arc-extinguishing process in high speed flow under ideal conditions, and conducted arc-extinguishing tests in high voltage laboratory conditions. The research results show that the extinguishing time of simulation is 1.2 ms, while the extinguishing time of test is 1.7 ms. Because the arc simulation can not simulate the real conditions, there is a 0.5 ms error between the arc extinguishing time obtained by simulation and test, but both of them are less than the action time of relay protection. The results verify the effectiveness of high-speed airflow arc-extinguishing anti-thunder gap and DC arc extinguishing.关键词
高速气流/直流电弧/熄灭条件/灭弧试验/灭弧时间/防雷Key words
high-speed airflow/DC arc/extinguishing condition/arc-extinguishing test/arc-extinguishing time/lightning protection引用本文复制引用
王巨丰,张华驿,李籽剑,冯凯,黄上师..高速气流灭弧防雷方法熄灭直流电弧的有效性[J].高电压技术,2018,44(8):2472-2478,7.基金项目
国家自然科学基金(51467002).Project supported by National Natural Science Foundation of China(51467002). （51467002）
