DL-T 992016《继电保护和电网安全自动装置检验规程》英文翻译

ICS29.240

K45

ElectricPowerIndustryProfessionStandardofthe

People'sRepublicofChina

DL/T995—2016

SupersedesDL/T995—2006

Testingregulationsonprotectionand

stabilitycontrolequipment

继电保护和电网安全自动装置检验规程

（EnglishTranslation）

（征求意见稿）

Issuedate:2016-12-05

Implementationdate:2017-05-01

IssuedbyNationalEnergyAdministration

DL/T995-2016

Foreword

ThisstandardisdraftedaccordingtotherulesgiveninGB/T1.1-2009"GuidelinesforStandardization

WorkPart1:StandardStructureandPreparation".

ThisstandardreplacesDL/T995-2006"TestingregulationsonProtectionandStabilityControl

Equipment".Inadditiontoanumberofeditorialchanges,thefollowingtechnicaldeviationshavebeenmade:

——Thetestregulationsandrequirementsforintelligentsubstationrelayprotectionandgridsafety

automatonareadded;

——Therelatedcontentsofrelayprotectionandstatemaintenanceofpowergridsafetyautomatonare

added;

——Therelayprotectionandthetestingtime,itemsandrequirementsofthegridsafetyautomatonfor

conventionalsubstationarepartiallymodifiedandimproved.

ThisstandardwasproposedbytheStandardizationManagementCenterofChinaElectricityCouncil.

ThisstandardisunderthejurisdictionofthePowerIndustryRelayProtectionStandardizationTechnical

Committee.

ThemajordraftinginstitutionsareNationalPowerGridNorthChinaElectricPowerControlSub-center,

NationalElectricPowerDispatchingControlCenter,ChinaSouthernPowerGridCorporationPower

DispatchingControlCenter,NorthChinaElectricPowerResearchInstitute,WeibeiElectricPower

DispatchingControlCenter,WeibeiElectricPowerCompanyTransportationTestingBranch,TianjinPower

DispatchingControlCenter,HebeiElectricPowerCompanyMaintenanceBranch,GuangxiElectricPower

DispatchingControlCenter,ShaanxiElectricPowerDispatchingControlCenter,ZhejiangElectricPower

DispatchingControlCenter,ChinaElectricPowerResearchInstitute,JiangsuElectricPowerResearch

Institute,ZhejiangElectricPowerResearchInstitute,NRElectricCo.,Ltd.,BeijingSifangAutomationCo.,

Ltd.,GuodianNanjingAutomationCo.,Ltd.,XJElectricCo.,Ltd.

TheprincipaldraftingmembersareYangXinping,WangNing,SunJiwei,LiuYu,GuoJianyong,PengYe,

MengChao,LiuWei,RenJun,ZhangYongwu,ZhangWei,WangYaqiang,HanBing,HuJianli,YanYutao,

ZhouChunxia,ZhouDongyu,WangSong,ZhuXiaotong,QinStress,ZhangYonggang,FanZhanfeng,Dai

Guangwu.

ThisguideismainlytranslatedbyXi'anThermalPowerResearchInstituteCo.,Ltd.

ThemaintranslatorsofthisguideareGaoFeng,WuPengyue,GuoXinyu,SunMengyao,Chaiqi,Wang

xiaohui,YangPeihao,Koushuichao.

ThisstandardreplacesDL/T995-2006.

Theopinionsorsuggestionsofthisstandardduringtheimplementationprocessarefedbacktothe

StandardizationManagementCenterofChinaElectricityCouncil(No.1,2ndlane,BaiguangRoad,Beijing

100761).

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DL/T995—2016

TestingregulationsonProtectionandStabilityControlEquipment

1Scope

Thestandardspecifiesperiod,contentandrequirementsofvarioustestsforrelayprotectionandgrid

safetyautomatonofpowersystemanditssecondarycircuit.

Thisstandardisapplicabletotheinstallation,commissioning,operationandmaintenanceofrelay

protectionandpowergridsafetyautomaton(hereinafterreferredtoasprotectionequipment)bypowergrid

enterprises,gridconnectedpowergenerationenterprisesandusers.

2NormativeReferences

Thefollowingreferenceddocumentsareindispensablefortheapplicationofthisstandard.Fordated

references,onlytheeditioncitedapplies.Forundatedreferences,thelatestversionofthereferenceddocument

(includinganyamendments)applies.

GB/T2900.15ElectrotechnicalterminologyTransformer,instrumenttransformer,voltageregulatorand

reactor

GB/T2900.50Electrotechnicalterminology-Generation,transmissionanddistributionof

electricity-General

GB/T2900.57ElectrotechnicalterminologyGeneration,transmissionanddistributionof

electricity-operation

GB/T7261-2016Basictestingmethodforrelayingprotectionandsecurityautomaton

GB/T14285-2006Technicalcodeforrelayingprotectionandsecurityautomaton

GB/T20840.7-2007Electronicvoltagetransformers

GB/T20840.8-2007ElectronicCurrentTransformers

GB/T22386-2008Commonformatfortransientdataexchange(COMRADE)forpowersystems

GB/T25931-2010Precisionclocksynchronizationprotocolfornetworkedmeasurementandcontrol

systems

DL/T478-2013Generalspecificationforrelayingprotectionandsecurityautomaton

DL/T527-2013Technicalspecificationsofpowersupplyforprotectionandcontrolequipment

DL/T587Codeforoperatingmanagementofmicroprocessor-basedrelayingprotectionequipment

DL/T860(allparts)Communicationnetworksandsystemsinsubstations

DL/T1501-2016Technicalspecificationsofdigitaltestingequipmentforrelayprotection

3Termsanddefinitions

ThefollowingtermsanddefinitionsdefinedinGB/T2900.15,GB/T2900.50,GB/T2900.57,GB/T20840.7,

GB/T20840.8,DL/T860areapplicabletothisdocument.

Relayprotectionsystem

Itisasystemcomposedofrelayprotectionequipment,mergingunit,intelligentterminal,switch,channel,

secondarycircuit,etc.torealizetherelayprotectionfunction.

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DL/T995—2016

4Generalprinciples

4.1Thisstandardisthebasicprincipletobefollowedinthetestsofprotectionequipment.Thecontentofthis

standardisnotlimitedtotherelayprotectionunit,butalsoincludestheequipmentofthemergingunit,intelligent

terminal,switch,channel,secondarycircuitandothercomponentsoftherelayprotectionsystem.

4.2Annual,quarterlyandmonthlyequipmenttestingplansshouldbereasonablyarrangedbytherelay

protectionmanagementandoperationmaintenancecompaniesatalllevelsaccordingtothespecificconditions

ofthelocalpowergridandincombinationwiththemaintenanceofprimaryequipment.Relevantdispatching

organizationsshouldsupportandcooperateandmakeoverallarrangement.

4.3Standardizedoperationinstructionsandimplementationplansshouldbepreparedforthetestsofprotection

equipment,andthecontentsshouldconformtothisstandard.

4.4Theaccuracylevelandtechnicalcharacteristicsofinstrumentsandmetersusedfortestingshouldmeetthe

requirements,andshouldbecalibratedregularly.

4.5Forthetestsofmicroprocessor-basedprotectionequipment,itisnecessarytomakefulluseofits"self

testing"function,focusontheteststhatcannotbedetectedbythe"selftesting"function.

4.6Forthetestingworkwithoutpowerfailure,doubleconfigurationofrelayprotectionandcooperationof

remoteandnearbackupprotectionshouldbeconsidered,andtheprinciplethatnopowerequipmentisallowedto

operatewithoutrelayprotectionshouldbefollowed.

5TestofrelayprotectionandpowergridsafetyautomatoninConventionalsubstation

5.1Typesandperiodofroutinemaintenanceandtests

5.1.1Typesofroutinemaintenanceandtests

Routinemaintenanceandtestscanbedividedintothreetypes:

a)Acceptancetestsofnewlyinstalledprotectionequipments;

b)Periodictestsofprotectionequipmentsinoperation(referredtoasperiodictest);

c)Supplementarytestsofprotectionequipmentsinoperation(referredtoassupplementarytest).

5.1.1.1Acceptancetestsofnewlyinstalledprotectionequipment

Theacceptancetestsofthenewlyinstalledprotectionequipmentshouldbecarriedoutunderthe

followingconditions：

a)Whenthenewlyinstalledprimaryequipmentisputintooperation；

b)Whenthenewlyinstalledprotectionequipmentisputintotheexistingprimaryequipment.

5.1.1.2Periodictestsofprotectionequipmentsinoperation

Periodictestcouldbedividedintothreetypes:

a)Alltests;

b)Partialtests;

c)Thetrippingandclosingtestsofcircuitbreaker.

5.1.1.3Supplementarytestsofprotectionequipmentsinoperation

Supplementarytestscouldbedividedintofivetypes:

a)TestafterSignificantchange(includingupgradeofprotectionequipmentsoftwareversion)oradding

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DL/T995—2016

newcircuittotheprotectionequipmentinoperation;

b)Testaftermaintenanceorreplacementofequipment;

c)Testafterabnormalconditionsarefoundduringoperation;

d)Testafteranaccident;

e)Testwhentheequipmentthathasbeenputintooperationafterpowerfailureformorethanoneyear.

5.1.2Contentsandperiodofperiodictest

5.1.2.1Periodictestshouldbecarriedoutinaccordancewiththeperiodanditemsspecifiedinthisstandard

andthecontentsofstandardizedoperationinstructionsapprovedandimplementedbycompetentdepartmentsat

alllevels.

5.1.2.2Theperiodictestcycleplanshouldbeformulatedinaccordancewiththecycleanditemsrequiredby

thisstandard,takingintoaccountthevoltagelevelandworkingconditionoftheequipmentunderitsjurisdiction.

Ingeneral,theperiodictestshouldbecarriedoutduringapoweroutageoftheequipmentasmuchaspossible.

Thecompletetestandpartialtestcycleofrelayprotectionequipmentswithvoltagelevelof220kVandabove

arelistintable1andtable2.

Table1Completetestcycletable

Alltesting

numberEquipmenttypeDescriptionofdefinitionscope

cycle(year)

ItincludestheAC,DCandoperationcircuits

introducedoutsidetheterminal,theauxiliaryrelay

Microprocessor-basedprotection

16involved,theauxiliarycontactoftheoperating

equipment

mechanism,theautomaticswitchoftheDC

controlcircuit,etc.

ItincludestheAC,DCandoperationcircuits

introducedoutsidetheterminal,theauxiliaryrelay

Nonmicroprocessor-basedprotection

24involved,theauxiliarycontactoftheoperating

equipment

mechanism,theautomaticswitchoftheDC

controlcircuit,etc.

Itreferstotheopticalfiberchanneland

Protectingfiberchannel,multiplexfiberor

36photoelectricconversionequipmentforthe

microwaveconnectionchannel

connectionofstationendprotectionequipment.

Processingequipmentforprotectioncarrier

Itinvolvesthefollowingcorresponding

channel(includingequipmentsharedwith

processingequipment:highfrequencycable,

4communicationmultiplexing,powergrid6

combinationfilter,differentialconnectionnetwork,

safetyautomatonandmaintainedbyother

frequencydivider

departments)

Table2Partialtestcycletable

numbTotaltesting

EquipmenttypeDescriptionofdefinitionscope

ercycle(year)

ItincludestheAC,DCandoperationcircuits

introducedoutsidetheterminal,theauxiliaryrelay

Microprocessor-basedprotectionequipmentinvolved,theauxiliarycontactoftheoperating

12-4

mechanism,theautomaticswitchoftheDCcontrol

circuit,etc.

Nonmicroprocessor-basedprotectionItincludestheAC,DCandoperationcircuits

21

equipmentintroducedoutsidetheterminal,theauxiliaryrelay

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DL/T995—2016

involved,theauxiliarycontactoftheoperating

mechanism,theautomaticswitchoftheDCcontrol

circuit,etc.

Protectdedicatedfiberchannel,multiplexReferstoopticalfiberheadwiping,receivingmargin

32-4

fiberormicrowaveconnectionchanneltest,etc.

Processingequipmentforprotectioncarrier

channel(includingequipmentsharedwith

Itreferstotransmissionattenuation,receivingmargin

4communicationmultiplexing,powergrid2-4

test,etc.

safetyautomatonandmaintainedbyother

departments)

5.1.2.3Whenmakingapartialtestcycleplan,theoperationandmaintenancedepartmentoftheequipmentcan

properlyshortenthetestcycleandincreasethetestitemsaccordingtothevoltagelevel,manufacturingquality,

operatingconditions,operatingenvironmentandconditionsoftheequipment.

a)Thefirstcompletetestmustbecarriedoutwithinoneyearafterthenewinstallationequipmentisput

intooperation.Afterthesecondcompletetestoftheequipment,ifitisfoundthattheoperationofthe

equipmentispoororthedefectsthatneedtobesupervisedhavebeenexposed,itcanbeconsidered

toshortenthepartialtestcycleappropriately,andselectthetestitemspurposefullyandemphatically.

Thedetailsareshownasfollow:

b)For110kVvoltagelevelMicroprocessor-basedprotectionequipment,partialtestshouldbecarried

outevery2-4years,andthecompletetestshouldbecarriedoutevery6years;fornon

microprocessor-basedprotectionequipment,refertothetestcycleofsimilarequipmentof220kV

andabovevoltagelevel.

c)Thetrippingandclosingtestofthecircuitbreakerwiththeequipmentshouldbecarriedoutin

combinationwiththemaintenanceoftheprimaryequipment.Supplementarytestcanbecarriedout

ifnecessary.

5.1.2.4Inthebusdifferentialprotection,circuitbreakerfailureprotectionandthetrippingcircuitbreakertest

ofswitchingthegeneratorset,switchingofftheload,switchingoffthelineortransformerinthepowergrid

safetyautomaton,itisallowedtoverifythecorrectnessofthewiringtoeachcircuitbreakerrespectivelybythe

conductionmethod.

5.1.3Contentofsupplementarytest

5.1.3.1Forthetestofprimaryequipment(circuitbreaker,currentandvoltagetransformer,etc.)for

maintenanceorreplacement,therelayprotectiondepartmentofoperationandmaintenanceunitshould

determinethetestitemsaccordingtothenatureofprimaryequipmentmaintenance(replacement).

5.1.3.2Aftersignificantchangesorsecondarycircuitchangesoftheprotectionequipmentsinoperation,the

relayprotectiondepartmentoftheoperationandmaintenanceunitshouldcarryouttestanddeterminethetest

itemsaccordingtothenatureoftheirwork.

5.1.3.3Incaseofanyabnormalityorincorrectactionoftheprotectionequipmentandthecauseisunknown,

therelayprotectiondepartmentoftheoperationandmaintenanceunitshould,accordingtotheaccidentsituation,

formulatespecifictestitemsandtestsequencepurposefully,andconductpost-accidenttestassoonaspossible.

Afterthetest,areportshouldbesubmittedintimeandsubmittedforfuturereferenceaccordingtothe

jurisdictionofequipmentdispatching.

5.1.4Testmanagement

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DL/T995—2016

5.1.4.1Forthenewprotectionequipmentsintrialoperation,comprehensivetestmustbecarriedoutand

reviewedbytherelayprotectionoperationmanagementdepartmentofthegrid(provincial)company.

5.1.4.2Fortheprotectionequipmentsthatcannotmeettheoperationrequirementsduetopoormanufacturing

quality,itshouldbesolvedbythemanufacturerandreporttothesuperiorcompetentdepartment.

5.1.4.3Incaseofanygeneralproblemoftheprotectionequipment,themanufacturerisobligedtoinformthe

competentoperationDepartmentintimeandputforwardpreventivemeasures.

5.2Conditionsforroutinesubstationtest

5.2.1Basicrequirementsandconfigurationofinstruments

5.2.1.1Theinstrumentsusedintheprotectionequipmenttestshouldbequalifiedandmeettherequirementsof

GB/T7261-2000.Theaccuracyleveloftheinstrumentsusedintheconstantvaluetestshouldnotbelowerthan

0.5.

5.2.1.2Ifthe220kVandabovesubstationsneedtodebugthecarrierchannel,thehighfrequencyoscillatorand

frequencyselectionmetershouldbeequipped.The220kVandabovesubstationorcentralizedcontrolstation

shouldbeequippedwithasetofmicroprocessordeviceandtestwireswhichcanoutputatleastthree-phase

currentandfourphasevoltageatthesametime.

5.2.1.3Therelayprotectionteamshouldatleastbeequippedwithpointertypevoltageandammeter,digital

voltageandammeter,clamptypeammeter,phasemeter,millisecondmeter,bridge,etc.;500V,1000Vand

2500Vinsulationresistancemeter;memoryoscilloscope;highfrequencyoscillatorandfrequencyselection

meterrequiredforcarrierchanneltest,noninductiveresistance,variableattenuator,etc.;microprocessor

completesetoftester.

Itisrecommendedtoconfigureportablerecorder(WaveformRecorder)andanalogcircuitbreaker.

Whentheopticalfiberlongitudinalchannelneedstobedebugged,itshouldbeequippedwithlightsource,

opticalpowermeter,errorcodemeter,variableopticalattenuatorandotherinstruments.

5.2.2Preparationbeforetest

5.2.2.1Beforeon-sitetest,itisnecessarytocarefullyunderstandtheprimaryequipmentoftheinspected

equipmentanditsadjacentprimaryandsecondaryequipment,aswellasthedetailsofthepartsrelatedtothe

operatingequipment,andthenformulatetechnicalmeasurestoensurethesafeoperationofthesysteminthe

wholeprocessoftest.

5.2.2.2Thedrawingsconsistentwiththeactualsituation,recordsofthelasttest,thelatestfixedvaluenotice,

standardizedoperationinstructions,qualifiedinstruments,spareparts,tools,connectingwires,etcshouldbe

prepared.

5.2.2.3Whentestinstrumentswithspecifiedgroundingterminalareinspectedonsite,theyarenotallowedto

bedirectlyconnectedtoDCpowercircuittopreventDCpowergrounding.

5.2.2.4Thepreparationsbeforetheacceptanceandtestofthenewlyinstalledprotectionequipmentinclude:

a)Understandtheprimarywiringoftheequipment,thepossibleoperationmodeafterputtinginto

operationandtheschemeofputtingtheequipmentintooperation,whichshouldincludethe

temporaryrelayprotectionmodeattheinitialstageofputtingintooperation.

b)Checktheschematicwiringdiagram(designdrawing)oftheprotectionequipmentandthe

correspondingsecondarycircuitinstallationdiagram,cablelayingdiagram,cablenumberdiagram,

circuitbreakeroperationmechanismdiagram,currentandvoltagetransformerterminalboxdiagram,

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DL/T995—2016

secondarycircuitdistributionboxdiagramandallotherdrawingsaswellastheprincipleand

technicalspecificationsofthecompletesetofprotectionandautomatonandcircuitbreaker

operationmechanismspecification,Thefactorytestreportofthecurrentandvoltagetransformer.,

etc.Theabovetechnicaldatashouldbecompleteandcorrect.Ifthenewequipmentiscommissioned

bytheinfrastructuredepartment,therelayprotectionacceptancepersonneloftheproduction

departmentshouldacceptthetechnicalreportaftertheacceptanceofthecompletesetoftechnical

data.

c)Accordingtothedesigndrawings,checktheinstallationpositionofallequipments.

5.2.2.5Thesettingtestoftheprotectionequipmentshouldbecarriedoutaccordingtothesettingnotice

providedbytherelevantrelayprotectiondepartment.Thepersoninchargeoftheworkshouldbefamiliarwith

thecontentsofthesettingvaluenotice,checkthecompletenessofthesettingvaluesandwhetherthe

transformationratioofthecurrentandvoltagetransformersusedisconsistentwiththeactualsituationonsite

(notlimitedtotheverificationofthesetfunctionsinthesettingvaluenotice).

5.2.2.6Whenconductingtestworkontheoperatingequipment,therelayprotectioninspectorshouldobtain

theconsentoftheoperatingpersonnelofthepowerplantorsubstationinadvance,performtheworkpermit

proceduresinaccordancewiththerelevantprovisionsoftheelectricalindustrysecuritywork,andcarryoutthe

testworkaftertheoperatingpersonneldisconnectalltheoutletreturncircuitsoftheprotectionequipmentby

usingthespecialconnectingpiece.

5.2.2.7Thesafeandreliablemaintenancetestpowersupplyshouldbeprovidedbythetestsite,anditis

forbiddentoconnectthetestpowersupplyfromtheoperatingequipment.

5.2.2.8Checkthatallmetalstructuresandequipmentcasingsintheroomequippedwithprotectionand

communicationequipmentshouldbeconnectedtotheequipotentialgroundinggrid.

5.2.2.9Checkthatthegroundingcopperbaratthelowerpartofthepanelwithstaticprotectionandcontrol

equipmenthasbeenreliablyconnectedtotheequipotentialgroundinggrid.

5.2.2.10Checkthattheequipotentialgroundinggridiscloselyconnectedwiththemaingroundinggridofthe

plantandstation.

5.3On-sitetestsofconventionalsubstation

5.3.1Testsofcurrentandvoltagetransformers

5.3.1.1Acceptanceinspectionofnewlyinstalledcurrentandvoltagetransformersandtheircircuits:

Checkwhetherthenameplateparametersofcurrentandvoltagetransformersarecomplete,andwhether

thecertificateofqualificationandtestdataarecomplete.Incaseoflackoftheabovedata,thefollowingtest

datashouldbeprovidedbythetestdepartmentoftherelevantmanufacturersorcapitalconstructionsand

productioncompanies:polarityofallwindings;transformationratioofallwindingsandtheirtaps;accuracy

levelofvoltagetransformersundereachcapacity;eachcurrenttransformerAccuracylevel(level),capacity

andinternalinstallationpositionofwinding;DCresistanceofsecondarywinding(eachtap);voltampere

characteristicsofeachwindingofcurrenttransformer.

5.3.1.2Aftertheinstallationofcurrentandvoltagetransformersiscompleted,therelayprotectioninspectors

shouldcarryoutthefollowingtests:

a)Thetransformationratio,capacityandaccuracylevelofcurrentandvoltagetransformersmustmeet

thedesignrequirements.

b)Testthepolarityrelationshipbetweenthewindingsofthetransformerandcheckwhetherthepolarity

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DL/T995—2016

markonthenameplateiscorrect.Checkwhethertheconnectionmodeandpolarityrelationshipof

eachsecondarywindingofthetransformerconformtothedesignandwhetherthephase

identificationiscorrect.

c)Whenconditionspermit,theworkingtaptransformerratioandcircuitshouldbecheckedbyinputing

currenttoeachphaseofthecurrenttransformer.(thepolarityandtransformationratiooftheexternal

transformerandbushingtransformerusedinthegeneratortransformerunitprotectioncanbe

checkedduringtheshort-circuittestofthegenerator).

d)Fromthesecondaryterminalboxofthecurrenttransformer,theACcurrentisintroducedtotheload

end,thevoltagedropofthecircuitismeasured,andtheimpedancebetweeneachphaseofthe

currentcircuitandtheneutrallineandbetweenp