文档摘要：随着紫外放电检测技术的广泛应用,为解决不同型号日盲紫外成像仪的检测结果缺乏一致性和可比性的问题,该文基于MODTRAN模型分析了温度、湿度、气压和检测距离等不同因素对日盲紫外波段光辐射的大气传输过程的影响特性,建立了紫外检测辐射传输模型,搭建了辐射计量一致性校准平台,提出了紫外检测结果一致性校准方法.利用该方法建立了3台不同型号紫外成像仪的检测结果一致性校准公式,可将紫外成像仪测得的光斑面积换算为检测目标产生的光辐射强度.使用3台紫外成像仪对棒-板模型电晕放电和氘灯光源进行紫外放电检测,由一致性校准公式所得检测目标的光辐射强度计算值的相对标准偏差均小于0.1,验证了一致性校准方法的普适性.
Abstract：Solar-blindultraviolet(UV)imagingtechnologyhasbeenwidelyusedinthedetectionofexternalinsulationdischargeofelectricalequipment,thankstoitsstronganti-interferencecapability,longdetectiondistance,non-contactoperation,andaccuratedischargelocationpositioning.ExistingresearchonUVdischargedetectiontypicallyusesphotoncountorspotareaastheUVdetectionparametersforassessingtheexternalinsulationconditionofelectricalequipment.However,fordifferentmodelsofUVimagers,thevariationsintheiropticalsystemstructureandsignalprocessingalgorithmsleadtosignificantdifferencesinthenumericalvaluesofUVparametersobtainedbytheinstruments,resultinginalackofconsistencyandcomparability.Toaddressthisissue,thisstudyrevealstheimpactmechanismsofvariousfactorssuchastemperature,humidity,pressure,anddetectiondistanceontheatmospherictransmissionofsolar-blindUVradiationandproposesaconsistencycalibrationmethodforthedetectionresultsofUVimagers.Firstly,theimpactcharacteristicsofdifferentfactorssuchastemperature,humidity,pressure,anddetectiondistanceontheatmospherictransmissionofsolar-blindUVradiationwereanalyzedbasedontheMODTRANmodel.AnempiricalcalculationformulafortheatmospherictransmittanceofUVradiationinthewavelengthrangeof240to280nmwasobtained.Itwasfoundthat,inweatherconditionssuitableforUVdetectionwithhumiditybelow80％,humiditydoesnotaffectthetransmissionofUVradiationinthewavelengthrangeof240to280nm.Theimpactcoefficientsofpressure,temperature,anddetectiondistanceontheatmospherictransmittanceofUVradiationinthewavelengthrangeof240to280nmare-0.0188,0.0001and-0.0014,respectively.Additionally,intheUVdischargedetectionofexternalinsulationofelectricalequipment,thedischargepointwastreatedasapointsourceuniformlyemittinglightintothesurroundingspace,basedonwhichaUVdetectionradiationtransmissionmodelwasestablished.Then,aradiationmetrologyconsistencycalibrationplatformwasconstructed,andaconsistencycalibrationmethodforUVdetectionresultswasproposedbasedontheUVdetectionradiationtransmissionmodel.TheopticalradiationintensitygeneratedbythedischargepointwasselectedasthestandardparameterfortheconsistencycalibrationofUVdetectionresults.Usingthismethod,consistencycalibrationformulaswereseparatelyestablishedforthreedifferentmodelsofUVimagers.ByconvertingthespotareameasuredbydifferentmodelsofUVimagersintotheopticalradiationintensitygeneratedbythedischargepointusingtheconsistencycalibrationformulas,itensuresthatthedetectionresultsofdifferentmodelsofUVimagersareconsistentandcomparable.Finally,basedontheconsistencycalibrationformulasforUVdetectionresults,UVdetectionwasperformedonarod-platemodelofcoronadischargeusingthethreeUVimagers.TherelativestandarddeviationsofthecalculatedopticalradiationintensitiesforeachUVimagerwere0.080,0.087,and0.098,respectively,andtherelativestandarddeviationamongallthecalculatedopticalradiationintensitieswas0.090.ForUVdetectionofadeuteriumlamp,therelativestandarddeviationofallthecalculatedopticalradiationintensitieswas0.063,withanaveragedeviationof5.78％fromtheactualopticalradiationintensityofthelightsource(1593μW/sr).TheeffectivenessoftheconsistencycalibrationmethodforUVdetectionresultswasdemonstrated.
作者：李泳霖 黄世龙 刘云鹏 耿江海 杨家骏Author：LiYonglin HuangShilong LiuYunpeng GengJianghai YangJiajun
作者单位：新能源电力系统全国重点实验室(华北电力大学)北京102206;华北电力大学河北省输变电设备安全防御重点实验室保定071003
刊名：电工技术学报 ISTICEIPKU
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(13)
分类号：O432TM930.1
关键词：紫外放电检测 辐射传输模型 辐射计量一致性校准平台 一致性校准方法 光辐射强度
Keywords：UVdischargedetection radiationtransmissionmodel radiationmetrologyconsistencycalibrationplatform consistencycalibrationmethod opticalradiationintensity
机标分类号：TN204TM855TP79
在线出版日期：2024年7月22日
基金项目：国家重点研发计划基于光辐射强度的日盲紫外放电检测结果一致性校准方法[
期刊论文] 电工技术学报--2024, 39(13)李泳霖 黄世龙 刘云鹏 耿江海 杨家骏随着紫外放电检测技术的广泛应用,为解决不同型号日盲紫外成像仪的检测结果缺乏一致性和可比性的问题,该文基于MODTRAN模型分析了温度、湿度、气压和检测距离等不同因素对日盲紫外波段光辐射的大气传输过程的影响特性,建立...参考文献和引证文献
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关键词：紫外放电检测,辐射传输模型,辐射计量一致性校准平台,一致性校准方法,光辐射强度,
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