絕緣紙板介電與擊穿性能匹配目標(biāo)下的制備參數(shù)優(yōu)化方法

李賽，黃猛，蘇妍簫，李怡然，史晟，齊波絕緣紙板性能的影響和權(quán)重；通過(guò)權(quán)重大小板介電常數(shù)的同時(shí)保持其擊穿性能不下降。板擊穿場(chǎng)強(qiáng)；適當(dāng)?shù)臒釅簻囟?、熱壓壓力、OptimizationofPreparationParametersfo(StateKeyLaboratoryofNewEnergyPowerSystAbstract：Thelowerthedielectricconstantofphighertheoverallwithstandvoltagelevelwillbe.Differentpreparationprocessparametersofpaperboardwilldirectlfectthedielectricconstantandbreakdownfieldstrengthofinsulatingpaperboard,whereas,thereisaloptimizationbetweenpreparationparameteproperties.Inthispaper,startingwithresearchingthebeatingtime,beatingpressure,hotpressingtime,hotpresure,hotpressingtemperature,andotherprocesses,theinfluencerelationshipandweightofthepreparationpropropertiesof1mmhigh-densprocessparametersthroughtheweight,thepurposeofreducingthedielectricconstantofoil-immersedpaperboardwhilekeepingthebreakdownperformanceunchangedwasachieved.Theinternalspacechargeofmeasuredbytheelectroacousticpulsemethod,andthesurfacetrapparametersofoilimmersedpaperboardwerembythesurfacepotentialattenuationmethod.Theinfluencemechanismofprocesrevealed.Theresultsshowthat,forthepurposeofmatchingdielectricandbreakdoKeywords：highdensitypaperboard;preparationprocess;dielectricpropertieProjectsupportedbyBeijingNaturalScienceFoundation( 目前在國(guó)內(nèi)市場(chǎng)中常用的1mm油浸紙板相對(duì)優(yōu)點(diǎn)，是目前國(guó)內(nèi)外纖維素絕緣紙/紙板的主要用本文探究應(yīng)用于油浸式變壓器內(nèi)部絕緣的絕本文選用本色純硫酸鹽針葉木漿板進(jìn)行單一紙板的制備和測(cè)試過(guò)程中所采用的儀器及其將絕緣紙裁剪成10cm×10cm大小放入溫度為李賽，黃猛，蘇妍簫，等：絕緣紙板介電與擊穿性能匹配目標(biāo)下的制備參數(shù)優(yōu)化方法10電容分壓器阻電護(hù)保電容分壓器阻電護(hù)保于溫度為85℃,真空度為0.1MPa的真空干燥箱常數(shù)采用Haefely2830/2831精密液固體電聲脈沖法(pulsedelectro-acoustic,PEA)等溫表面電位衰減(isothermalsuEt其值為1.38×10?23J/K；T為絕對(duì)溫度，其值為Fig.2SchematicdiagramofACbreakdownFig.3Schematicdiagramofisothermals 熱壓：將兩片軟銅網(wǎng)覆蓋到抄造后紙板的兩由前文研究現(xiàn)狀可知制備工藝中打漿和熱壓漿工藝中，打漿時(shí)間和打漿壓力是可控的關(guān)鍵因?qū)ι厦嫠x擇的因素和水平進(jìn)行正交實(shí)驗(yàn)設(shè)Fig.4Carbonizationresultsofpaperboardsur/℃112233李賽，黃猛，蘇妍簫，等：絕緣紙板介電與擊穿性能匹配目標(biāo)下的制備參數(shù)優(yōu)化方法1019111111212222313333421122522233623311731213832321933132113321211313221212312231223123313233213133212Fig.5Relativedielectricconstantofpap37.468kV/mm，其極差分別為0.564、0.481、Table4RangeanalysistTable5Rangeanalysist Table6Rangeanalysist接下來(lái)按照油浸紙板相對(duì)介電常數(shù)的權(quán)重關(guān)接下來(lái)通過(guò)改變熱壓過(guò)程使用的網(wǎng)紋來(lái)改變Fig.8HotpressingteFig.9Hotpressing李賽，黃猛，蘇妍簫，等：絕緣紙板介電與擊穿性能匹配目標(biāo)下的制備參數(shù)優(yōu)化方法1021為計(jì)算不同相對(duì)介電常數(shù)下油紙復(fù)合擊穿場(chǎng)與4.4。按照交流電壓下的分壓比可計(jì)算出復(fù)合場(chǎng)E2ε0為變壓器油力下，制備油浸紙板并進(jìn)行PEA測(cè)去極化60s時(shí)前者空間電荷密度高Fig.11Effectofdifferen熱壓壓力的大小是影響紙板緊度的一個(gè)關(guān)鍵打漿壓力和熱壓壓力均是通過(guò)改變纖維之間 Fig.12SpacechargecharacteristicsofFig.13PEAresultsofdepolarizationprocessofoilimpreg-natedpaperboardatdiff李賽，黃猛，蘇妍簫，等：絕緣紙板介電與擊穿性能匹配目標(biāo)下的制備參數(shù)優(yōu)化方法10去極化60s時(shí)的空間電荷密度相較于50min熱壓時(shí)去極化60s時(shí)刻不同熱壓溫度制備的油浸紙板兩種表面結(jié)構(gòu)的油浸紙板SPD陷阱分布如圖阱會(huì)使得電荷難積聚易消散[7,29]。因此在相同條件影響更大，且打漿壓力的影響是其他工藝參數(shù)的Fig.14PEAresultsofdepolarizationprocessofoilimpreg-natedpaperboardatFig.15Trapparametersofdi tionofvegetableoil-paperinsulationcondit[2]甄東.基于理化特性和介電特性的高密度絕緣紙板性能評(píng)價(jià)方ZHENDong.PerformanceevaluationofhighdeChinaElectricPowerUnivconducivepropertiesofoil-impregnatedpreabsorption[J].Electricsurfacedischargebasedonthedifferentratioofdioilandpapers[J].Transactipowertransformers:partI-historyanddevelopcalInsulationMagazine,2006,22(degreeonpropertiesofcelluloseinsgineering,2018,44(12)refiningparametersonmechanicalandelecingpaper[J].InsulatingMaterials,2morphologyonthedielectricresponseofsulation[J].IEEETransactionson2015,22(4):2339-234tureoninsulationperformanceofinsulatiopulsedelectroacousticmethod[C2014:389-392.[13]LEIYX,GUOJ,WANGC,amodifiedorthogonallearningtrolmethodsofelectricalpropertiesofeProceedingsoftheCSEE,2022,42(8):3086-3097.fiberboardHot-Pressing[C]∥Proceedingsofthe2ndIEonIndustrialElectronicsandchanicalandelectricalperformancesofilatedpaperboardinhot[18]ZHURAVLEVAN,REZNIKA,ofthedegreeofpolymerisationofthecellulosemoleculesontheelec-tricalandmechanicalpropertiesofinsandElectronicEngineer[19]吳東樂(lè).基于纖維特性和紙張結(jié)構(gòu)多元統(tǒng)計(jì)分析的油紙絕緣性能WUDongle.Researchonoil-paperinsulationmultivariatestatisticalanalysisoffibture[D].Beijing,China:ChinaNpaperwithdecreasedpermittivity,goodmechanicaertiesbyKevlar/Nano[21]HOLLERTZR,W?GBEencryptionwithadaptiverecoveryoftwo壓器油理化與電氣特性的影響[J].高電壓技術(shù)，2022，48(12)：ofisomericnon-naphthenEngineering,2022,48(12):underexternalelectricfief李賽，黃猛，蘇妍簫，等：絕緣紙板介電與擊穿性能匹配目標(biāo)下的制備參數(shù)優(yōu)化方法1025thetrapdepthforspacech