本文選題：間隙開關(guān) + 放電　； 參考：《中國電機(jī)工程學(xué)報(bào)》2014年21期

【摘要】：隨著激光誘導(dǎo)等離子體和空氣放電應(yīng)用結(jié)合的日益緊密,激光誘導(dǎo)放電的基本物理過程也得到了廣泛的研究。圍繞直流高壓條件下的納秒激光誘導(dǎo)放電,研究了不同實(shí)驗(yàn)條件(激光入射方式、激光焦點(diǎn)位置)對(duì)擊穿延時(shí)和抖動(dòng)的影響,并利用ICCD快速照相觀察了等離子體的發(fā)展過程。結(jié)果表明:激光徑向入射時(shí),激光焦點(diǎn)偏電極側(cè)有利于擊穿延時(shí)和抖動(dòng)的降低;相同激光能量條件下,間隙電壓由35 kV提升至45 kV,平均擊穿延時(shí)由108μs降為4.8μs;相對(duì)于徑向入射,軸向入射激光燒蝕電極表面并發(fā)射電子,可誘導(dǎo)產(chǎn)生一條平直的放電等離子體通道,間隙的平均擊穿延時(shí)達(dá)到亞μs量級(jí)(800 ns)。
[Abstract]:With the combination of laser-induced plasma and air discharge, the basic physical process of laser-induced discharge has been widely studied. The effects of different experimental conditions (laser incident mode, laser focus position) on breakdown delay and jitter are studied around nanosecond laser induced discharge at DC high voltage. The development process of plasma is observed by ICCD rapid photography. The results show that the bias electrode side of laser focus is favorable to the reduction of breakdown delay and jitter, and the gap voltage is increased from 35 kV to 45 kV, and the average breakdown delay is reduced from 108 渭 s to 4.8 渭 s under the same laser energy. The axial incident laser ablates the electrode surface and emits electrons, which can induce a straight discharge plasma channel. The average breakdown delay of the gap is up to 800 nm / s.
【作者單位】： 中國電力科學(xué)研究院;電力設(shè)備電氣絕緣國家重點(diǎn)實(shí)驗(yàn)室(西安交通大學(xué));
【基金】：國家自然科學(xué)基金項(xiàng)目(51222704)~~
【分類號(hào)】：TM83

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