绝缘纸板介电与击穿性能匹配目标下的制备参数优化方法

李赛，黄猛，苏妍箫，李怡然，史晟，齐波绝缘纸板性能的影响和权重；通过权重大小板介电常数的同时保持其击穿性能不下降。板击穿场强；适当的热压温度、热压压力、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( 目前在国内市场中常用的1mm油浸纸板相对优点，是目前国内外纤维素绝缘纸/纸板的主要用本文探究应用于油浸式变压器内部绝缘的绝本文选用本色纯硫酸盐针叶木浆板进行单一纸板的制备和测试过程中所采用的仪器及其将绝缘纸裁剪成10cm×10cm大小放入温度为李赛，黄猛，苏妍箫，等：绝缘纸板介电与击穿性能匹配目标下的制备参数优化方法10电容分压器阻电护保电容分压器阻电护保于温度为85℃,真空度为0.1MPa的真空干燥箱常数采用Haefely2830/2831精密液固体电声脉冲法(pulsedelectro-acoustic,PEA)等温表面电位衰减(isothermalsuEt其值为1.38×10−23J/K；T为绝对温度，其值为Fig.2SchematicdiagramofACbreakdownFig.3Schematicdiagramofisothermals 热压：将两片软铜网覆盖到抄造后纸板的两由前文研究现状可知制备工艺中打浆和热压浆工艺中，打浆时间和打浆压力是可控的关键因对上面所选择的因素和水平进行正交实验设Fig.4Carbonizationresultsofpaperboardsur/℃112233李赛，黄猛，苏妍箫，等：绝缘纸板介电与击穿性能匹配目标下的制备参数优化方法1019111111212222313333421122522233623311731213832321933132113321211313221212312231223123313233213133212Fig.5Relativedielectricconstantofpap37.468kV/mm，其极差分别为0.564、0.481、Table4RangeanalysistTable5Rangeanalysist Table6Rangeanalysist接下来按照油浸纸板相对介电常数的权重关接下来通过改变热压过程使用的网纹来改变Fig.8HotpressingteFig.9Hotpressing李赛，黄猛，苏妍箫，等：绝缘纸板介电与击穿性能匹配目标下的制备参数优化方法1021为计算不同相对介电常数下油纸复合击穿场与4.4。按照交流电压下的分压比可计算出复合场E2ε0为变压器油力下，制备油浸纸板并进行PEA测去极化60s时前者空间电荷密度高Fig.11Effectofdifferen热压压力的大小是影响纸板紧度的一个关键打浆压力和热压压力均是通过改变纤维之间 Fig.12SpacechargecharacteristicsofFig.13PEAresultsofdepolarizationprocessofoilimpreg-natedpaperboardatdiff李赛，黄猛，苏妍箫，等：绝缘纸板介电与击穿性能匹配目标下的制备参数优化方法10去极化60s时的空间电荷密度相较于50min热压时去极化60s时刻不同热压温度制备的油浸纸板两种表面结构的油浸纸板SPD陷阱分布如图阱会使得电荷难积聚易消散[7,29]。因此在相同条件影响更大，且打浆压力的影响是其他工艺参数的Fig.14PEAresultsofdepolarizationprocessofoilimpreg-natedpaperboardatFig.15Trapparametersofdi tionofvegetableoil-paperinsulationcondit[2]甄东.基于理化特性和介电特性的高密度绝缘纸板性能评价方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]吴东乐.基于纤维特性和纸张结构多元统计分析的油纸绝缘性能WUDongle.Researchonoil-paperinsulationmultivariatestatisticalanalysisoffibture[D].Beijing,China:ChinaNpaperwithdecreasedpermittivity,goodmechanicaertiesbyKevlar/Nano[21]HOLLERTZR,WÅGBEencryptionwithadaptiverecoveryoftwo压器油理化与电气特性的影响[J].高电压技术，2022，48(12)：ofisomericnon-naphthenEngineering,2022,48(12):underexternalelectricfief李赛，黄猛，苏妍箫，等：绝缘纸板介电与击穿性能匹配目标下的制备参数优化方法1025thetrapdepthforspacech