文档名：大气压交流金属针水电极放电特性研究
摘要：气液两相放电受到诸多因素的影响,在液体表面表现出较为复杂的放电特性与相互作用.该文采用大气压交流金属针-水电极放电结构,对其放电特性及规律进行研究.实验结果表明,随着电源功率的增大,大气压交流金属针-水电极的放电由两种不稳定放电模式转变为稳定放电模式.电源功率足够高时,放电在正、负半周期出现截然不同的放电模式,结合放电影像和电气特性对其放电的时空演化过程进行了分析,研究了电源功率和放电间隙对放电特性及参数的影响.研究发现,击穿电压随电源功率的增大从2.3kV减小到2.0kV,随放电间隙的增大从1.0kV增加到1.9kV;电流峰值和功率峰值只在正半周期时与放电间隙的大小呈正相关关系;传导电荷量随电源功率的增大而增多,与放电间隙没有明显的关系;单次放电能量中,正半周期放电能量始终大于负半周期的放电能量,正、负半周期放电能量与电源功率呈正相关关系,与放电间隙没有明显的相关性.
Abstract：Thisreserachbasedontheatmosphericpressurealternatingcurrent(AC)metalneedle-waterelectrodedischargedevice.Andtheinfluencesofneedle-waterdistanceandsupplypowersonthedischargecharacteristicsofmetalneedle-waterelectrodehavebeenstudied.Theexperimentalresultsshowedthatthedischargeofmodesaandboccurredwhenthesupplypowersweresmall,andthedischargemodesofthemwereunstable.Thedifferenceswerethatthedischargemodeawasmorelikecoronadischarge,andthewatersurfaceundertheneedleelectrodewouldbesunken.Thedischargemodebwassimilartosparkdischarge,andthedischargechannelinthedischargegapwastortuous.Modeconlyexistedinthenegativehalfcycleofdischarge,andhadanaxisymmetricstructure.Continuingtoincreasethesupplypowers,modecswitchedtodischargemoded,whichnotonlyhadthediskstructureofmodec,butalsohadsomebrightfilamentousdischarge.Thespatial-temporalevolutionprocessofmodeddischargehadbeenstudied.ItwasfoundfromtheICCDdischargeimagesthatthedischargemorphologyinthepositivehalfcycleextendedfromthemetalneedleelectrodetothewatersurface,anddiffusedintomanyfilamentsaroundthewatersurface.Thesedischargefilamentshadmultiplecontactpointswiththewatersurface,andthecontactpointsmovedcontinuouslyonthewatersurfaceduringthedischargeprocess.Thenegativehalf-cycledischargemorphologywasaxisymmetricasawhole,showingdifferentlayeredstructuralcharacteristics.ThisstructurewasconsistentwiththeglowdischargeformortheTrichelpulsedischargestructure.Theexperimentalresultsshowedthatwhenthemetalneedleelectrodewasapositivehighvoltageelectrode,thebreakdownvoltagedroppedfrom2.3kVto2.0kVwiththeincreaseofsupplypowers,andthedischargestarttimeinthecyclewasadvancedfrom16μsto9μs,whilethemaintenancevoltageanddischargeterminationtimehadlittlechange.Whenthemetalneedleelectrodewasanegativehighvoltageelectrode,thebreakdownvoltagedroppedfrom1.4kVto1.0kVasthesupplypowersincreased.thepeakcurrent(about40.0mA)andpeakpower(about50.0W)ofdischargewereroughlyequal.However,thepeakvaluesofthethreewerealllessthanthecorrespondingpeakvaluesofthepositivehalfcycle.Andthedischargeenergyofthepositivehalfcyclewasalwaysgreaterthanthatofthenegativehalfcycle.Theinfluencesofdischargegapsonthedischargecharacteristicsofmodedhavebeenstudied.Theresultsshowedthatwhenthemetalneedleelectrodewasapositivehighvoltageelectrode,asthedischargegapincreasedfrom1.0mmto5.0mm,thebreakdownvoltageincreasedfrom1.2kVto3.2kV,thecurrentpeakvalueincreasedfrom56.4mAto392.1mA,andthepowerpeakvalueincreasedfrom68.9Wto992.2W,butthedischargestarttimeinthecycledelayedfrom6μsto16μs,whilethemaintenancevoltageanddischargeterminationtimehadlittlechange.Witha6.0mmdischargegap,therewasnoplasmageneratedinthefirsthalfcycle.Whenthemetalneedleelectrodewasanegativehighvoltageelectrode,asthedischargegapsincreased,thebreakdownvoltageincreasedfrom1.0kVto1.9kV,andthepeakcurrentandthepeakpowerwereapproximatelyequal.Therewasnopositiveornegativecorrelationbetweentheamountofconductivechargeandthesizeofthedischargegaps.Theconductivechargeinthepositivehalfcyclewasbasicallymaintainedat1.2×10-6C.Thedischargeenergyinthepositivehalfcyclewasalwaysgreaterthanthatinthenegativehalfcycle.
作者：肖越 俞哲 王迪雅 张腾宇 宋春莲 Author：XiaoYue YuZhe WangDiya ZhangTengyu SongChunlian
作者单位：大连海事大学理学院大连116026大连海事大学理学院大连116026;黑龙江工业学院等离子体生物质材料研发与检测省级重点实验室鸡西158100黑龙江工业学院等离子体生物质材料研发与检测省级重点实验室鸡西158100
刊名：电工技术学报
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(9)
分类号：O536TM85
关键词：气液两相放电 低温等离子体 交流放电 放电影像
Keywords：Gas-liquidtwo-phasedischarge non-thermalplasma ACdischarge imagesofdischarge
机标分类号：TM855TG661U463.2
在线出版日期：2024年5月13日
基金项目：国家自然科学基金，黑龙江省自然科学基金项目大气压交流金属针-水电极放电特性研究[
期刊论文] 电工技术学报--2024, 39(9)肖越 俞哲 王迪雅 张腾宇 宋春莲气液两相放电受到诸多因素的影响,在液体表面表现出较为复杂的放电特性与相互作用.该文采用大气压交流金属针-水电极放电结构,对其放电特性及规律进行研究.实验结果表明,随着电源功率的增大,大气压交流金属针-水电极的放...参考文献和引证文献
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大气压交流金属针-水电极放电特性研究 Research on Discharge Characteristics of AC Excited Metal Needle-Water Electrode at Atmospheric Pressure
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