等离子体喷射触发气体开关多通道放电特性
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摘要
为了能够形成稳定的多通道放电,研制了一种等离子体喷射触发气体开关。在触发电极的内部嵌入多个微型激励腔以形成多通道等离子体喷射,从而在主间隙中诱导多通道放电。研究了触发电路连接方式、触发能量和极性对多通道等离子体喷射的影响,比较了开关在两种工作模式下各间隙放电通道数量随工作系数的变化规律。实验结果表明:采用触发电路II连接方式,触发电极的多通道放电效果更好;高触发能量、负极性和低气压条件有利于形成多通道等离子体喷射;当开关运行在工作模式Ⅱ,且在较高工作系数时,具有更好的多通道放电特性。
In this paper,aplasma-jet triggered gas switch was designed to form multichannel discharge.Multiple micro-incentive chambers were embedded in the trigger electrode to form multichannel plasma jet.The influences of trigger circuit,energy and polarity on the multichannel plasma jet were studied.The relationship between discharge channel numbers of every spark gap and working coefficient was also investigated at two working modes.Experimental results show that the multichannel discharge characteristics of trigger electrode are better when the upper plate of the trigger electrode is directly grounded.High trigger energy,negative polarity and low gas pressure are conducive to the formation of multichannel plasma jet.The plasma jet triggering can effectively induce multichannel discharge of gas switch.The discharge channel number increases with the increase of working coefficient.
In this paper,aplasma-jet triggered gas switch was designed to form multichannel discharge.Multiple micro-incentive chambers were embedded in the trigger electrode to form multichannel plasma jet.The influences of trigger circuit,energy and polarity on the multichannel plasma jet were studied.The relationship between discharge channel numbers of every spark gap and working coefficient was also investigated at two working modes.Experimental results show that the multichannel discharge characteristics of trigger electrode are better when the upper plate of the trigger electrode is directly grounded.High trigger energy,negative polarity and low gas pressure are conducive to the formation of multichannel plasma jet.The plasma jet triggering can effectively induce multichannel discharge of gas switch.The discharge channel number increases with the increase of working coefficient.
引文
[1]伍友成,杨宇,耿力东,等.200kV小型低电感气体开关[J].强激光与粒子束,2014,26:045034.(Wu Youcheng,Yang Yu,Geng Lidong,et al.200kV small gas switches with low inductance.High Power Laser and Particle Beams,2014,26:045034)
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[12]Martin T H,Guenther A H,Kristiansen M.J C Martin on pulsed power[M].New York:Plenum Press,1996:297-299.
[13]施围,邱毓昌,张乔根.高电压工程基础[M].北京:机械工业出版社,2008:29-30.(Shi Wei,Qiu Yuchang,Zhang Qiaogen.High voltage engineering foundation.Beijing:China Machine Press,2008:29-30)
[14]Martin T H.An empirical formula for gas switch breakdown delay[C]//Proc 7th IEEE International Pulsed Power Conference.1989:73-79.
[2]Woodworth J R,Alexander J A,Gruner F R,et al.Low-inductance gas switches for linear transformer drivers[J].Physical Review Special Topics—Accelerators and Beams,2009,12:060401.
[3]Kim A A,Kovalchuk B M,Kremnev V V,et al.Multigap multichannel spark switch[C]//Proc 11thIEEE International Pulsed Power Conference.1997:862-867.
[4]Kim A A,Frolov S,Alexeenko V,et al.Prefire probability of the switch type fast LTD[C]//Proc 16th IEEE International Pulsed Power Conference.2007:565-570.
[5]LeChien K R,Gahl J M,Elizondo J M,et al.Requirements for optimal performance and the consequences of using toroidal shaped electrodes in multichanneling switch[C]//Proc 16th IEEE International Pulsed Power Conference.2003:1385-1388.
[6]Kemp M A,Curry R D,Kovaleski S D.Experimental study of the multichanneling self-break section of the rimfire switch[J].IEEE Trans on Plasma Science,2006,34(1):95-103.
[7]常家森,危瑾,刘轩东,等.同轴场畸变气体火花开关的多通道放电特性[J].强激光与粒子束,2012,24(5):1234-1238.(Chang Jiasen,Wei Jin,Liu Xuandong,et al.Multichannel discharge characteristics of coaxial field distortion gas spark switch.High Power Laser and Particle Beams,2012,24(5):1234-1238)
[8]刘志刚,曾江涛,孙凤举,等.±100kV气体轨道开关击穿特性[J].强激光与粒子束,2011,23(4):1127-1131.(Liu Zhigang,Zeng Jiangtao,Sun Fengju,et al.Breakdown properties of rail gap switch with voltage of±100kV.High Power Laser and Particle Beams,2011,23(4):1127-1131)
[9]孙铁平,丛培天,李阳,等.六间隙串联气体开关触发放电过程[J].强激光与粒子束,2013,25(8):2167-2172.(Sun Tieping,Cong Peitian,Li Yang,et al.Discharging process of six-gap gas switch under pulsed trigger.High Power Laser and Particle Beams,2013,25(8):2167-2172)
[10]李阳,孙铁平,盛亮,等.多间隙气体开关光纤诊断[J].强激光与粒子束,2012,24(8):2000-2004.(Li Yang,Sun Tieping,Sheng Liang,et al.Diagnosis of multi-gap gas switch with optical fiber detectors.High Power Laser and Particle Beams,2012,24(8):2000-2004)
[11]铁维昊,刘善红,张乔根,等.新型等离子体喷射触发气体开关[J].强激光与粒子束,2014,26:045013.(Tie Weihao,Liu Shanhong,Zhang Qiaogen,et al.A novel plasma-jet triggered gas switch.High Power Laser and Particle Beams,2014,26:045013)
[12]Martin T H,Guenther A H,Kristiansen M.J C Martin on pulsed power[M].New York:Plenum Press,1996:297-299.
[13]施围,邱毓昌,张乔根.高电压工程基础[M].北京:机械工业出版社,2008:29-30.(Shi Wei,Qiu Yuchang,Zhang Qiaogen.High voltage engineering foundation.Beijing:China Machine Press,2008:29-30)
[14]Martin T H.An empirical formula for gas switch breakdown delay[C]//Proc 7th IEEE International Pulsed Power Conference.1989:73-79.
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