1、華北電力大學(xué)（北京）碩士學(xué)位論文導(dǎo)電顆粒對(duì)絕緣子表面電場和電荷積聚影響的研究姓名：陳濟(jì)申請學(xué)位級(jí)別：碩士專業(yè)：高電壓與絕緣技術(shù)指導(dǎo)教師：丁立健20060501華北電力大學(xué)碩士學(xué)位論文摘要表面電場強(qiáng)度和表面電荷對(duì)絕緣子的絕緣性能有重要的影響，本文主要對(duì)真空中絕緣子表璇含有導(dǎo)電顆粒時(shí)其表面電場強(qiáng)度和表蕊電荷密度的變化進(jìn)行了研究，瓣ANSYS鴦疆元軟孛建立了一個(gè)三綣宅場蕊真挨整；莰計(jì)鍘終了一令靂予濺萋絕緣予表面電荷密度的新型靜電電容探頭，研究

2、了真空中直流電聰作用下有籜電顆粒時(shí)絕緣子的襲面電荷積聚和閃絡(luò)特性。實(shí)驗(yàn)和仿真結(jié)果表明絕緣子表面電場強(qiáng)度隨撂電顆粒長發(fā)的增加焉增加，隨顳粒崽徑的增熱麗減??；導(dǎo)電顆糧靠近金屬電極時(shí)，絕緣予表面嘏場強(qiáng)度饔登太于顆粒在箕它位置對(duì)豹穰場強(qiáng)度；程囊空中，纛流電壓作用下導(dǎo)電顆粒會(huì)使絕緣予表面電荷積聚速度變慢，但是總體來說其影響不是很大；篡空中絕緣予直流閃絡(luò)電壓隨顆粒長度的增加麗變小，隨顆粒直徑的增加而變大，閃終愛鯰緣予表瑟毫饕密度硬顯下海。關(guān)鍵詞：表

3、筒電場，仿真，表面電荷，導(dǎo)電顆粒，閃絡(luò)電壓A囂STRACTThesurfaceelectricfieldsandthesurfacechargedistributionplayanimportantroleontheelectricinsulationperformanceofinsulatorsThisthesismainlyfocusesontheinfluenceofconductingparticlesonthesurfacee

4、lectricfieldsandtheaccumulatedsurfacechargedensityofinsulatorUsingFEManalysissoftwareANSYS，theelectricfieldsofinsulatorandtheelectrodesystemhasbeenanalyzed；anewtypeofelectrostaticprobeforsulfacechargedistributionmeasurem

5、enthasbeendeveloped；Surfacecha諾edensityandflashovercharacteristicsofinsulatorhavebeeninvestigatedinvacuumwithDCappliedvoltageBaseontheresearchresults，thesurfaceelectricfieldofinsulatorsascendwiththeincreaseofthelengthofp

6、articles，anddescendwiththeincreaseofthediameterofparticle；whenparticleiScloseothemetallicelectrodethesurfaceelectricfieldofinsulatorascenddramaticallyBecauseoftheexistingofconductingparticle，thespeedofsurfacechargeaccumu

7、lationbecomeslowly，butitsinfluenceislimited。Theflashovervoltageofinsulatorsdescendwi鏹theincreaseoftheIen或hofparticle，andascendwiththeincreaseofthediameterofparticle，andthesurfacechargedensityofinsulatordiminishedobviousl