文档介绍：该【译文DLT 722014 变压器油中溶解气体分析和判断导则 】是由【书籍1243595614】上传分享，文档一共【28】页，该文档可以免费在线阅读，需要了解更多关于【译文DLT 722014 变压器油中溶解气体分析和判断导则 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。DL/T722—:47903-2015ElectricPowerIndustryStandardofthePeople'sRepublicofChinaDL/T722—2014ReplaceDL/T722—2000GuidetotheAnalysisandtheDiagnosisofGasesDissolvedinTransformerOil(ExposureDraft)Issuedate:2014-10-15Implementationdate:2015-03-01IssuedbyNationalEnergyAdministrationDL/T722—2014IDL/T722—2014IIForewordordancewiththerulesgivenintheGB/-2009Directivesforstandardization—Part1:-,thefollowingtechnicaldeviationshavebeenmadewithrespecttoDL/T722-2000:——The"dissolutionanddiffusionofgasesinoil"wasadded();——Thespecificrequirementsforshorteningthecyclein"detectionunderspecialcircumstances"wereadded();——ontentof“takeoilsamplefromoil-filledelectricalequipment”in“sampling”wasdeleted,andonly“takegassamplefromgasrelayventnozzle”wasretained,ontentsaresubjecttorelevantregulationsinGB7597(seeChapter6ofthisstandard);——Theoriginalcontentsin"removalofdissolvedgasfromoil"and"gasdetectionmethod"weredeleted,andtherelevantregulationsinGB/T17623shallprevail(seeChapter7andChapter8ofthisstandard);——Thetitleof"Ex-missionedequipment"();——missionedweremodified,itwasclassifiedintovoltagelevels"330kVandabove"and"220kVandbelow",ordingly();——Thevoltageclassclassificationoftheinstrumenttransformerandthecorrespondingattentionvaluesweremodified,andtheattentionvaluesofthebushingweremodified();——The"Principlesfortheapplicationofattentionvalues"wasadded,andsomecontentsweremodified();——Apartofthecontentof"Characteristicgasmethod"wasrevised();——Thecodeof"low-temperatureoverheating(below150℃)"wasrevised();——Thestructureandcorrespondingcontentof"faulttypejudgment"wererevised(seeChapter10ofthisstandard);——AnnexA"SampleLabelFormat"andAnnexD"ApplicableConcentrationofStandardMixture"weredeleted(seeAnnexof2000Edition);——"mendedwhenjudgingfaults"wasadded(seeAnnexDofthisstandard);——Thedescriptionoftypicalfaultswasrevisedandfaultexampleswereadded(seeAnnexEofthisstandard);——Aninformativeannex"GasDistributionCoefficient"wasadded(seeAnnexFofthisstandard).(DL/TC02).Thisstandardwasdraftedby:ChinaElectricPowerResearchInstitute,StateGridOperationBranch,panyElectricPowerResearchInstitute,StateGridLiaoningElectricPowerCo.,Ltd.,panyElectricPowerResearchInstitute,StateGridElectricPowerResearchInstituteWuhanNARICo.,Ltd.,panyElectricPowerResearchInstitute,panyElectricPowerResearchInstitute,StateGridJilinProvinceElectricPowerCo.,,StateGridEastChinaBranch,pany,pany,panyMaintenanceBranch,panyElectricPowerResearchInstitute,panyElectricPowerResearchInstitute,ShenyangTransformerResearchInstituteCo.,pany,TBEAShenyangTransformerGroupCo.,Ltd.,ChinaYangtzePowerCo.,,NynasPetroleum(Shanghai)Co.,:WangJianyi,LingMin,LiJinzhong,SheZhenqiu,WangRuizhen,WangShige,WuYihua,LiangZhiyu,FuQiang,LiShouxue,JiangYimin,ChenJiangbo,ZhangShuzhen,CaiShengwei,LiaoWenfeng,ZhouXiaofan,XuWanda,XuJiangang,HanJinhua,LiHonglei,PengWei,ChenKui,LiuFeng,WangWeiguo,—2014IDL/T722—2014IIThisstandardreplacesDL/T722-:——SD187—1986;——DL/T722—2000。PleasesendanyopinionsorsuggestionsputforwardduringtheexecutionofthisstandardtotheStandardizationManagementCenterofChinaElectricityCouncil(,Lane2,BaiguangRoad,Beijing,100761)TranslationunitofEnglishversionofthisstandard:Maintranslatorsandeditorsofthisstandard:12GuidetotheAnalysisandtheDiagnosisofGasesDissolvedinTransformerOil1 ScopeThisstandardspecifiesthemethodforfaultidentificationandfaulttypejudgmentofoil-filledelectricalequipmentbasedonthedissolvedandfreegasesintransformeroil(mineralinsulatingoil),(board)asthemaininsulatingmaterials,includingtransformers,reactors,instrumenttransformers, ,,thelatesteditionofthereferenceddocument(includinganyamendments) MethodofsamplingfortransformerandturbineoilsinelectricpowerindustryGB/ponentcontentsofgasesdissolvedininsulatingoilbygaschromatographymethodDL/T984 Guideforthediagnosisofinsulationaginginoil-immersedpowertransformerIEC60599 Mineraloil-impregnatedelectricalequipmentinservice-Guidetotheinterpretationofdissolvedandfreegasesanalysis3 TermsandDefinitionsForthepurposesofthisdocument,-filledelectricalequipment,(H2),methane(CH4),ethane(C2H6),ethylene(C2H4),acetylene(C2H2),carbonmonoxide(CO),carbondioxide(CO2) totalhydrocarbonTotalamountoffourhydrocarboncharacteristicgases,,C2H6, freegasGasinsolubleinoil(suchasthegasintheupperpartoftheoilsurfaceoftheequipmentandthegasinthegasrelay).4 —HbondsandC—Cbonds,-molecularhydrocarbongases,suchasCH4,C2H6,C2H4,C2H2,etc.,andmayalsogeneratecarbonsolidparticlesandhydrocarbonpolymers(X-wax).TheoxidationofoilwillalsogenerateasmallamountofCOandCO2, positionofsolidinsulatingmaterialsSolidinsulationmaterialsrefertopaper,laminatedcardboardandwoodblocks,etc.,-chainhighlypolymerizedhydrocarbon(C6H10O5)—ObondandglucosidebondisweakerthanthatoftheC—°C,pletelycrackedandcarbonizedabove300°,alargeamountofCOandCO2,asmallamountoflow-molecularhydrocarbongases, OthersourcesofgasThewatercontainedintheoilcanreactwithirontogenerateH2;whenthetemperatureishighandthereisODL/T722—2014DL/T722—20142522dissolvedintheoil,somepaint(alkydresin)intheequipmentmaygeneratealargeamountofH2underthecatalysisofsomestainlesssteel,orthecatalyticreactionofstainlesssteelwithoilcanalsogeneratealargenumberofH2;enerateH2duringwelding;somemodifiedpolyimideinsulatingmaterialscanalsogeneratecertaincharacteristicgaseswhencontactedwithoil;;aftertroubleshooting,pletelyremoved,butslowlyreleasedintotheoil;Theoilintheoilchamberoftheswitchoftheon-loadvoltageregulatingtransformerleakstothemaintankofthetransformer,andelectricsparksareformedwhentheselectiveswitchoperatesatacertainposition(suchaspolarityconversion),whichwillgenerateC2H2intheoilofthetransformerbody;Thegasgeneratedbythefaultoftheauxiliaryequipmentofthecoolingsystem(suchassubmersibleoilpump)willalsoentertheoiloftransformerbody; ,,umulatedinthegasrelayoroilconservator, ,andetectionshallbeconductedbeforeandafterthetest,,4days,10days,-uptransformerswithacapacityof240MVAandabove3monthsVoltage220kV,capacity120MVAandabove6monthsVoltage66kVandabove,capacity8MVAandabove1yearInstrumenttransformerVoltage66kVandabove1~3yearsBushing—WhennecessaryNote:Thedetectioncyclesofothergradesoftransformers,reactorsandinstrumenttransformersisself-,itmaybedeterminedbytheactualsituation, DetectionunderspecialcircumstancesUnderspecialcircumstances,ordingtothefollowingrequirements:DL/T722—2014DL/T722—201434a) Whentheequipmenthasexceptionalconditions(suchastransformergasrelayaction,differentialprotectionaction,pressurereleasevalveaction,andhighcurrentimpact,over-excitationoroverload,instrumenttransformerexpanderaction,etc.),,) Whenthefollowingexceptionalitiesaresuspectedintheequipment,ordingtothesituation,,ifthegrowthtrendisobvious,othercorrespondingmeasuresmustbetaken;ifthecontentisstableafterthreetimesoftestsundersimilaroperatingconditions,) ,thecyclecanbeshortenedtoonceaweek;whenitissuspectedthattheconductivecircuitisfaulty,) -energydischargeissuspected,itshouldbeshortenedtoonceaday;whenhigh-energydischargeissuspected, Takeoilsamplesfromoil-filledelectricalequipmentAccordingtotherelevantregulationsofGB/ ,-ponents,-,ifused,,putasmallpieceoflatextubeontheventnozzleofthegasrelay,andconnectasmallmetalthree-wayvalvetothesyringeattheotherendofthelatextube(payattentiontotheinnerdiameterofthelatextube,thejointbetweenthedeflatingvalveofthelatextubeandthegasrelayandthemetalthree-wayvalveshallbesealed).Fortheoperationstepsandconnectionmethods,seetherelevantregulationsontheanalysisandsamplingofgasesdissolvedintransformeroilinGB/:a) Turnthethree-wayvalve,flushtheconnectingpipelineandthesyringewiththegasinthegasrelay(thisstepisnotnecessarywhenthegasvolumeislo