CPRI Newsletter 145 issue English

2 CPRI News July - September 2018

ContentsContentsIn the News 3

Grid Tied Inverter Test Facility 4

Testing Assignment for Overseas Customers 5

Participation in Exhibitions 6

Events Celebrated 6

Workshop / Training Programme / Seminars conducted for Utilities 7

Visit of Overseas Customers/Important Customers to CPRI 9

Power Station Related Field Services 10

Research Papers Published / Presented 11

New Test Facility 13

Accolades 13

CPRI News 3July - September 2018

In the News

TheInstituteorganisedtheAnnualCustomerMeet-2018,at CPRI, Bangalore, on 24th August 2018. About 70 SeniorRepresentativesfromUtilitiesandIndustriesacrossthecountryparticipatedintheMeet.

ShriV.S.Nandakumar,DirectorGeneral,CPRIduringhisopeningremarks informed Customers of the latest update on CPRIactivities. This was followed by Presentation of Action TakenReportbyDr.K.T.Varughese,AdditionalDirector,CPRI,BangaloreonthesuggestionsoftheCustomersmadeduringthepreviousCustomerMeet-2017,heldatCPRI,Bangalore.PresentationsonnewfacilitiesrecentlyaddedbytheInstitutewerealsomade

81st Standing Committee Meeting of CPRI

Shri Vivek Kumar Dewangan, Joint Secretary & FinancialAdviser (JS&FA), Ministry of Power, New Delhi took a reviewmeetingofCPRI,withDirectorGeneralandotherseniorofficersofCPRI,atCPRI,Bangalore,on15thJuly2018.AfterthemeetingJS&FAvisitedLaboratories.

81stStandingCommitteeMeetingofCPRIwasheldatCPRI,Bangalore,on16thJuly2018.

Valued Customer Award

The20thMeetingofStandingCommitteeonR&D(SCRD)ofCPRIwasheldatConferenceHall,NRPCBuilding,NewDelhi,on25thSeptember2018.ThemeetingwaschairedbyMr.PankajBatra,Chairperson,CEA,NewDelhi.ThemeetingwasattendedbyJS&FA,MoP,MembersfromCEA,BHEL,POWERGRID,NTPC-NETRA, DSIR and NHPC. Director General-CPRI attended &

5th meeting of Technical Committee on Transmission Research held on 9th & 10th July 2018

The5thMeetingofTechnicalCommitteeonTransmissionResearchofCPRIwasheldatCPRI,Bangalore,on9th&10thJuly2018.ThemeetingwaschairedbyDr.SCSrivastava,Professor,IIT,Kanpur.MembersfromCEA,BHEL,POWERGRIDandIEEMAparticipatedinthemeeting.Progressofongoingandcompletedprojectswerereviewed.Evaluationofnewprojectswascarriedout.


20th meeting of the Standing Committee on R&D (SCRD) of CPRI held at Conference Hall, NRPC Building, New Delhi, on 25th September

2018

A program was organized on “Buy on GeM – Abhiyaan”underthedirectivesofMinistryofPower,asNationisobserving“NationalMissiononGeM”from6thSeptemberto17thOctober

Grid Tied Inverter Test FacilityGrid tied-inverter testing facility has been established in CPRIatEnergyEfficiencyandRenewableEnergyDivision(ERED).ThedivisioncannowundertakealltestingwhicharemandatoryforinvertermanufacturersforregistrationunderBureauof IndianStandards(BIS).Gridtiedinvertersofratingupto500kVAcanbetestedatthisfacility.

Basedonoperation, internalcircuitries,methodofconversionetc. inverters are classified intodifferent categories.However,fromthepracticalpointofview,classificationbasedonoperationiswidelyused inmostof theareas.Thisoperationalbehaviordividesinvertersintotwocategoriesasfollows:

1. GridtiedInverter

2. StandaloneInverter

Grid tied inverter has capability to interact with the gridthus power transfer to the grid is made possible. WhereasStandaloneinvertercaterdemandforanisolatedloadwhichisnotelectricallyconnectedtothegrid.

In thefieldof testing, gridtied inverter has to copewith fewmore particular standards as it interactswith grid than othercommon standards which are relevant to both grid tied andstandaloneinverter.

FollowingarethestandardsusedfortestingofGridtiedinverters:

1. IS/ IEC 61683:1999 (Reaffirmed 2015) : Photovoltaicsystems-Powerconditioners-Procedureformeasuringefficiency

2. IS 16221-1: 2016/ IEC 62109-1:2010:- Safety of powerconverters for use in photovoltaic power systems- Part 1:

Generalrequirements

3. IS 16221-2:2015/ IEC 62109-2:2011:- Safety of powerconverters for use in photovoltaic power systems- Part 2:Particularrequirementsforinverter

4. IS16169:2014/IEC62116:2008:Testprocedureofislandingprevention measures for utility- interconnected photovoltaicinverters

Efficiency Test

Efficiency measurement of power conditioners includinginverters used in photovoltaic system is performedas per IEC61683standardpublishedin1999andreaffirmedin2015.Thisstandardmentions different load conditions to be consideredduring the test viz. 5%, 10%, 25%, 50%, 75% and 100%. Theinstalledfacilitycansupporttestingof invertersupto500kVAfor grid tied inverter while it can support up to 200 kVA forstandaloneinverter.

Safety Related Test

Guidelines for testing Safety of Power Converters for use inPhotovoltaic Power Systemshas been laid downby IS 16221-1&-2/IEC62109-1&-2standards.

First part of the standard applies to the Power ConversionEquipment (PCE) for use in photovoltaic systems where anuniform technical level with respect to safety is necessary.It defines the minimum requirements for the design andmanufactureofPCEforprotectionagainstelectricshock,energy,fire,mechanicalandotherhazards.

Shri. K.C. Jha addressing the gathering during “BoG ( Buy on GeM) Abhiyaan” program on 24th September 2018 at CPRI Bengaluru.

2018,foralltheGroupHeads,HeadsofDivisions,UnitsHeadsof all Units and their nominated officials, at CPRI, Bangalore,on24thSeptember2018. A lectureon“IntroductiontoGeMand its advantages and recent features added on GeM” wasdeliveredbyMr.KCJha,AdditionalCEO,MinistryNodalOfficerofGeM,NewDelhi,followedbyademonstration.

convened the meeting. Progress of ongoing and completedprojectswere reviewed. Evaluationof four (04) newprojectswascarriedout..


Second part of the standard covers the particular safetyrequirementsrelevanttoinverterproductsaswellasproductsthatperform inverter functions inadditiontoother functions.Inverterscoveredbythisstandardmaybegrid-interactive,stand-aloneormultiplemodeinverterssuppliedbysingleormultiplephotovoltaicmodules grouped in various array configurationsandmaybe intended for use in conjunctionwithbatteries orotherformsofenergystorage.

1. LightningImpulse,SwitchingImpulse,WetPowerFrequency,RadioInterferenceVoltageandCoronatestson400kV,DoubletensionInsulatorstringconsistingof2x21nos.of210kN,Glassinsulatorswith hardware fittings suitable for triple ACSR ternconductorandon400kV,Single“V”suspensionInsulatorstringconsistingof2x20nos.of160kN,GlassinsulatorswithhardwarefittingssuitablefortripleACSRternconductorforM/s.EUGIGOU,EstoniacarriedoutatUHVRL-CPRI,Hyderabad

2. Abilitytowithstandthedynamiceffectsofshortcircuitteston100MVA,220/55/55kVScotttransformerofM/s.MeidenshaCorporation,Japan,atHighPowerLaboratory,CPRI,Bangalore

3. Short-TimeCurrentTeston36kV,OutdoordrytypeCurrentTransformerofM/s.PTESITASPACIFIC,Jababeka,Indonesia.atHighPowerLaboratory,CPRI,Bangalore

Testing Assignment for Overseas Customers4. Short time current test conducted on Non-ferrous non-metallic alloy trefoil cleat clamps suitable for up to 400kV, 2500 Sq. mm. cable for M/s. Power Transmission andTelecommunicationEquipment(PTE),Jeddah,KingdomofSaudiArabiaatHighPowerLab,Bangalore.

5. Ability to withstand dynamic effects of short currenttest conducted on 500 kVA, 11/0.420 kV, three phasedistribution transformer for M/s. SABS-NETFA, South Africa,and Manufacturer M/s. Toshiba Transmission & DistributionSystem(India)Pvt.Ltd.,Rudraram,TelanganaatHighPowerLab,Bengaluru

6. Internal arc test carried out on 24kV AIS Panel CablechamberofM/sPTSiemens,IndonesiaatHighpowerLaboratory,CPRI,Bangalore.

Grid tied Inverter test facility

Grid tied inverter test facility

RLC load

Anti-Islanding Test

Inthecaseofutilityinteractivetypeinverter(Gridtiedinverters)extra measures are to be taken to make sure that while inoperationwithgrid,invertercomesinlinewithbehaviorofthegrid.Somesituationmayariseatwhichgridisde-energizedbutinvertertriestocaterthedemandonthegrid.Thisisknownasislanding. Intheabsenceofutilitycontroloverthegridduringislanding, customer equipment aswell as utility equipment is

morevulnerabletodamage if thegeneration insidethe islandoperates outside of specified voltage and specified frequencyrange.Ifmaingridreconnectswithislandoutofsynchronization,again there is a chance for damage to customer/utilityequipment. So the customer owned generationmust be abletosenseconditionofthegridandmustceaseenergypumpingto the grid if grid is offline. This functionhas to be equippedwith grid tied inverters. As per standard IS 16169/IEC 62116,inverter shall cease the energy outputwithin 2 seconds aftergriddisconnection.


Participation in Exhibitions INDIAN TECHNOLOGY CONGRESS - 2018:IndianTechnologyCongress(ITC)-2018washeldinNIMHANSConventionCentre,Bangalore, on 5th and 6th September 2018 with the theme“Technology First: Making India Innovate, Excel Globally andProsper”.ITC-2018wasinauguratedbyShriH.D.Kumaraswamy,Honorable Chief Minister of Karnataka. The event discussedtechnologicalandoperationalissues;andcontemporarydigitaltechnologies with theme based technical sessions focusingon innovation, best practices & industry engagement. CPRIsponsoredtheeventandsetupastalldisplayingitsfacilitiesandcredentials.ThestallwitnessedVisitorfromIndustry,Researchorganizations, Government and Academia who showed keeninterestintheactivitiescarriedoutbyCPRI.

Visitor at CPRI Stall

Visitors from M/s. Precise Electrical, M/s.ACME Industries, Thailand, M/s. Powerman, Bangladesh

PowerEx Asia 2018:CentralPowerResearchInstitute(CPRI)participatedinPowerExAsia2018organizedatImpactexhibitioncentre,Bangkok,Thailandfrom6thto8thSeptember2018.Sri.B.MMehra,AdditionalDirector,STDS,BhopalandSri.Ramadas,EnggOfficer, Information& Publicity division, Bengaluruweredeputed tomanning the stall. CPRI stamped the presence bysettingupa3x3meterstallandpromotedourservicesat theexhibition.FootfallstoCPRIstallwereapproximately100Visitors/Customers.

Events Celebrated IndependencedayCelebrationatCPRI,Bengaluru

Independence day Flag hoisted by Director General, CPRI and Officials are also presented.

HindiweekcelebrationwasconductedatSTDS-CPRI,Bhopal,from 14th to 20th September 2018. During this celebration,singing,essaywritingandquizcompetitionswereconductedfortheemployees.Thevaledictory functionwaspresidedoverbyProf.RamDevBharadwaj,ViceChancellorofAtalBihariVajpayeeHindiUniversity,Bhopal.


Hindi Divas was celebrated at CPRI, Bangalore on 27thSeptember2018.Smt.JahanzebAkhtar,PrincipalCommissionerof Income tax, Ministry of Finance, Govt. of India was theChiefGuestofthefunction.Shehighlightedtheimportanceofrealizingone’spotentialandcontributingtowardstheSocialandEconomicgrowthofthecountrytoemergeasastrongnation.Prizesweredistributedtothewinnersofvariouscompetitions.Cash awards were given to the winners under “IncentiveSchemefororiginalNotingandDraftinginHindi”.CashawardswerealsodistributedtothewinnersofBestOriginalTechnicalarticleinHindiviz.MicrowaveTubeResearchandDevelopmentCentre, Central Manufacturing Technology Institute, Officeof the PrincipalDirector of Commercial Audit, Bangalore. Thehighlightofthefunctionwasaculturalprogrammepresentedbythein-housetalentsofCPRI.

Workshop / Training Programme / Seminars conducted for Utilities

CPRIconductedWorkshop/TrainingProgramme/Seminarsonthefollowingtopicsforutilities/Manufacturers.

The33rdand34thBatchesof“ResidentialInductionTrainingProgramme”fromM/s.WestBengalStateElectricityDistributionCompanyLtd.,Kolkata,wasconductedaspertheMoUbetweenCPRIandM/s.WBSEDCL,foraperiodof3weeksfrom09thto28th July 2018 and between 4th to 25th September 2018 atCCARrespectively.About25Engineersinthe33rdBatchand16Engineersinthe34thBatchattendedthetrainingprogramme.

The trainingmodules coveredvariousaspectsof theelectricalDistribution Engineering relevant for day to day activitiesof the engineers who are from the distribution sector. Thetechnical topics covered under the training programme wereaspects of distribution engineering and network, losses,billing and collection efficiency, maintenance of distributiontransformers, testing and maintenance, healthiness, reactivepower compensation, capacitors, protection and their testing,relays, cables, protection philosophy, monitoring and controlofdistributionplants,dataacquisition,SCADAandRMU,Safetyaspects.

The training programme had technical lectures given by in-house and external experts in classrooms as well as practicaldemonstrationsatvariouslaboratoriesofCPRIBengaluru.

High Voltage Division conducted one day workshopon Dielectric Testing of Transormers, Insulators and CircuitBreakers.Theutilitieshavetooperateandmaintainanumberofhighvoltagelinesandsubstations.Allpowerequipmentwhichis used in these systems use different categories ofmedia asinsulation to provide isolation between live parts at differentpotentialsaswellaslivepartsandearth.Theinsulationhastowithstand different kinds of stresses, among which, electricalstress is highly severe and predominant. System studies giveus knowledge about prospective electrical stresses in termsof their magnitudes and duration. The electrical apparatusinsulation should have strength to withstand those expectedstresses to make the system reliable. Insulation strength ofeverypowerapparatusshouldbecheckedpracticallytoconfirmitswithstandingcapabilityagainstprospectivestresses.Hence,itisimportantforpowersystemengineersandmanufacturersofpowerequipmenttohaveabasicunderstandingofhighvoltageengineeringandtestingtoensurethereliableoperationofthesystem.Keepingtheaboveinview,itwasintendedtoorganizea one-day workshop on “Dielectric Testing of Transformers,InsulatorsandCircuitBreakers”on31STAugust2018


Delegates of the One day Training Program on “High Voltage Testi ng Of Electrical Equipment” UHVRL, CPRI, Hyderabad

UHVRL, CPRI, Hyderabad conducted one day tutorialprogram on “High-Voltage Testing of Electrical Equipment”during27thJuly2018atCPRI,Hyderabad.Thetutorialprogramwastailoredtosuitengineersatalllevelsrangingfromforthoseentering this subjectarea for thefirsttime,newgraduatesorentrylevelapprenticestothosewhoarewishingtoimprovetheirknowledgeinthisimportanttopic.Theaimofthetutorialprogramwastodisseminatetheknow-howandthestate-of-the-artofHVtestingtoallwhoarerelatedtoHVgeneration,transmissionanddistribution.Altogether48participantsfromutilities,industries,academicinstitutionsincluding12inhouseparticipantsattendedtheprogram.ExpertsfromUHVRL,Hyderabaddeliveredlectureson Generation andMeasurement of High-Voltages, DielectricTesting of Electrical Equipment, Partial discharge, RIV andCoronatestandTestingofTransformers.Theparticipantswerealsoexposedtopracticaldemonstrationonhighvoltagetestingandmeasurementtechniquesonafewelectricalequipmentinthelaboratorywhichbenefittedtheminunderstandingthehighvoltage test and measurement techniques. The program waswellappreciatedbytheparticipants

Dielectric Materials Division organized 2 days tutorialprogram on “Insulating Fluids (New and In-service) andDiagnosticTests”during06-07,September,2018.3participants,from M/s. Vijai Electricals Ltd., Haridwar, participated in theprogram.

Powertransformersarevitallinksinthepowersystemnetwork.Thesecostlysystemshavetofunctionforlongperiodswithoutanyproblems.Anyfailureofthesecomponentswillleadtoseriousconsequentiallosses.TheoilbeforefillingintoTransformers,hastobeselectedonthebasisofdifferentphysical,chemicalandelectricalparametersinordertogetlongservicelife.Also,thisoilhastobeperiodicallytestedtoascertainitsbasicelectricalproperties,forcontinuedsafeuseinTransformers.

Thistutorialisplannedtodisseminatetheknowledge,expertiseand experience CPRI personnel on testing of transformer oilsandsignificanceofDissolvedGasAnalysisandFurananalysisasdiagnostictoolinmaintenanceoftransformers.

Dielectric Materials Division organized 2 days tutorial program on “Insulati ng Fluids (New and In-service) and Diagnosti c Tests” during

06-07, September, 2018.

Tutorial Program Conducted by UHVRL, Hyderabad inSeptember2019

TheUltraHighVoltageResearchLaboratory(UHVRL),ofCentralPowerResearchInstitute(CPRI),Hyderabadhasorganizedoneday training programme on “Testing and its significance onInstrument Transformer as per IS 16227 series”, during 28thSeptember,2018atSeminarRoom,CPRI,Hyderabad.Altogether40 participants from utilities, industries, academic institutionincluding12inhouseparticipantsattendedthetrainingprogram.

Shri. K Devender Rao, Joint Director, delivered lecture on“Overviewof InstrumentTransformers testingasper IS16227series”. Followed by Dr. Pradeep Nirgude, Additional Directorand Unit Head delivered lecture on “Short circuit and partial

Firstmodule isonvariouspropertiesofnewinsulatingoilandin-service oil. This module focuses on various properties ofnew and in-service insulating oils and provide significance ofparameters that are practicallymeasuredon routinebasis fortransformermaintenance.Thetopicscoveredare:

ManufactureandStorageoftransformeroil.

Procedures for thesamplingofnew insulatingoiland in–serviceinsulatingoil.

Parametersofnewandin-serviceoilandtheirsignificance.

Discussions on national and international Standards andspecifications.

Secondmoduleisonvariousdiagnosticpropertiesofin-serviceoilfortransformerconditionmonitoringandmaintenance.HerediscussionswerefocusedmainlyonDissolvedGasAnalysisandFuran analysis and Degree of Polymerization including casestudies.

Attheendofthisprogram,theparticipantshallbeabletoKnowaboutPhysical/ChemicalandElectricaltestsonTransformeroiltoassesstheconditionofoilforcontinueduse.ThisalsohelpstoknowaboutDissolvedgasanalysistest,FurantestandinterprettheresultstoassesstheinternalconditionofTransformeranditsinsulation.


Photographs of One day Training Programme on “Testing and its significance on Instrument Transformer as per IS 16227 series”

organized at UHVRL-CPRI, Hyderabad

discharge testing on Instrument Transformers”. In the secondsession,Dr.PRajamani,EOGr.3,deliveredlectureon“DielectricaccuracyandtemperaturerisetestsonInstrumentTransformersasperIS16227”and“SpecialTestonInstrumentTransformer”.

SomeofthetestsonInstrumentTransformerwasdemonstratedto the participants during the laboratory visit. The trainingprogrammeendedwithvaledictoryprogramat05:30PM.Someofthephotographsoftheprogramisgivenbelow

One day workshop was organized by Oil Test Lab, STDSBhopal on 28.9.2018. The workshop was well attended byrepresentatives fromvariousorganizations.TheworkshopwaspresidedbyAdditionalDirector-UnitHead,CPRIBhopalShriJ.SantoshwithseniorofficerssharingtheDias.

Therewere50participantsincluding7Lecturersintheprogram.TheOrganisations likeBHEL,MPMKVV,RajasthanRajyaVidyutUtpadan Nigam Limited, Rail Vikash Nigam limited, EMCO,SterlitePowerTransmissionLimited,GujratEnergyTransmissionCorporation(GETCO)–GETRI,NHPTL,CSPDCL,ACMECleantech

Delegates of the One day Workshop was organized by Oil Test Lab, STDS Bhopal

SolutionsPVTLimited,Toshiba,CromptonGreaves,M/sCenturyInfrapowerPVTLtdandmanyotherTransformermanufacturersaswellPoweroilindustriespersonnelfromM/sAparIndustries,M/s Savita Oil Technology, Hindustan Petroleum CorporationLimitedparticipatedintheprogram.

Intheworkshop5Technicalpapersandtechnicaltalkspresentedvariousspeakers–ShriRahulBuswala&Mr.JubairAhamedSr.Engineers fromBHEL on“DissolvedGasAnalysis”;ShriSanjayJagdale,VicePresidentfromM/sSavitaOiltechnologiesLimitedon“NaturalEaster-AlternateDielectricFluidforTransformers”;ShriG.R.Viswanath, JDCPRI,Noidaon “Special tests forNewInsulating Oil as per IS : 335 Specifications”; Shri P. SadasivaMurthyJD,CPRI,Bengaluruon“CharacterizationofEasterbasedoilsasalternativetomineraloils”;Dr.P.K.MaitiJD,CPRI,Kolkotaon“AgeingbehaviorofMineraloilbasedAl2O3Nanofluid”andRamjeetSingh,AdditionalDirector, STDSBhopalon “Moistureandparticles-ContaminationinTransformeroil”.Thetechnicalqueries and doubts raised by participants were answered bykeyspeakers.IntheprogramSr.Officials/engineersfromCPRI,STDS,BhopalandBinawerealsopresent.

Visit of Overseas Customers/Important Customers to CPRI 1. VisitofMr.AlokKumarMohanty,representativefromM/s.ACMEElectronicsLimited,Dhaka forwitnessingthe Ability towithstandthedynamiceffectsofshortcircuittestcarriedouton200kVA11/0.415kVThreePhaseDistributionTransformers,forM/s.ACMEElectronicsLimited,Dhaka,Bangladesh.

2. Visit of Mr. Raghunath G from M/s. UL – UnderwritersLaboratoriesMiddleEast,DubaiforwitnessingtheConditionalshortcircuittestsat36kA,30kA,21.6kA&18kAcarriedouton415V,250A8wayLVSwitchBoard(SMDB),asperIEC61439-1&IEC61439-2forM/s.GamaEngineering,Sharjah,UAE.

3. Visit of Mr. Rajeev K V from M/s. AL Hamad IndustriesInternational and Mr. Mohamed Abullal Ibrahim & Ms. ArraAlsamAlNapsifromM/s.FederalElectricity&WaterAuthority(FEWA) UAE for witnessing the Verification of short-circuitwithstandstrengthat30kA for1 second forM/s. ALHamadIndustriesInternational,UAE.

4. VisitofMs.FraytOleksandraandMs.OlgaOleksandrenkoM/s.LvivInsulatorCompany,UkraineandMs.DipalPanchal,M/s.AdvaitInfratech,Ahmedabad,IndiaforwitnessingtheDielectric,RadioInterferenceVoltageandCoronatestperformedon3Nos.of400kV,GlassinsulatorstringsofM/s.EUGIGOU,Katuselapi6,11412,Tallinn,EstoniamakeatUHVRL-CPRI,Hyderabad

5. Visit of Mr. Md. Hamidur Rahman- Engineer, Mr. Md.AbdurRahimTechnicianandMr.Md.RahatHosain,Technicianfor witnessing the Impulse withstand Voltage Test on 15kVA,6.35/0.24 kV Single Phase Distribution Transformer of M/s.ConfidenceElectricLtd,Dhaka,BangladeshcarriedoutatSTDS-CPRI,Bhopal

6. Visit of Mohammad Arif Haidari, Electrical Engineer &Mr. SayedAbdullahHamraz, Engineer fromM/s.DABS, Kabul,Afghanistan visited STL-STDS, Bhopal for witnessing Impulseteston100kVA,20/.0420kVtransformerofVijaiElectricalsLtd,Haridwar


Power Station Related Field ServicesS/N Field Services Organisation for which carriedout

1. Evaluation of performance testing of 2x195 MW coolingtowers

M/s.KantiBijleUtpadanNigamLtd.(KBUNL),MuzaffarpurThermalPowerPlant,Kanti,Muzaffarpur

2. Preliminary Inspection of Failed water wall tube at site atKPKDTPS,500MWu#5(LT-287)

M/s.KhaperkhedaThermalPowerStation,Khaperkheda

3. MetallurgicalAnalysisofFailedWaterWallTube fromReararchU#5,500MW(LT-287)

4 MetallurgicalAnalysis/Material CompositionandHardnessTestofFailedPlate(LT-287)

5 MetallurgicalAnalysisofFailedTubes(LT-256) M/s.M.B.PowerLtd.,JaithariThermalPowerPlantAnnupur,M.P

6 CorrosionmappingofUnit-2Boiler M/s.NTPC,Farakka

7 ConditionMonitoring Tests onGenerator, Transformer andLightningArresters

M/s.NPCIL,TarapurAtomicPowerStation1&2,Boisar,Maharashtra

8 Protectionauditforthefollowingsubstations(s/s):• 765kVDharmajaygarhs/s• 765kVTamnars/s• 765kVKotras/s• 765kVDurgs/s• 400kVKolhapurs/s• 765kVPunes/s

M/sPGCIL,WR-I,Nagpur

9 FailureandChemicalAnalysisofClinkers(LT-272) M/s.KhaperkhedaThermalPowerStation,Khaperkheda

10 MaterialCompositionofSamples&HardnessMeasurement(LT-275)

M/s.ChandrapurSuperThermalPowerStation,Chandrapur

11 Corrosionmappingofwaterwalltubes M/s.NTPC,Unit#2,Farakka(W.B)

12 Corrosionmappingofwaterwalltubes M/s.NTPC,Unit#2,Tuticorin(TN)

13 FieldTestsonStationTransformer M/s.HarduaganjThermalPowerStation,UPRVUNL,Kasimpur,Aligarh

14 MetallurgicalanalysisofFailedBoilerTubesofUnitNo.1&2(LT-302)

M/s.MarwaTendubhataThermalPowerStation,MarwaJanjgir,Champa,Chhattisgarh

15 MetallurgicalanalysisofFailedBoilerTubesofUnitNo.1(LT-300)

M/s.D.B.PowerLtd.,2x600MWSuperThermalPowerStation,Janjgir,Champa,Chhattisgarh

16 MetallurgicalanalysisofWaterWallTubes(LT-276) M/s.KoradiThermalPowerStation,Koradi

17 ExpertServiceforhighShaftvibrationofUnitNo.1,500MWBHELmakeTurbine(TOS-237)

M/s.MarwaTendubhataThermalPowerStation,MarwaJanjgir,Champa,Chhattisgarh

18 MetallurgicalanalysisofFailedWaterWallTubes(LT-280) M/s.MSPGCL,KoradiThermalPowerStation,U#8&9,3x660MWKoradi


Research Papers Published / PresentedCPRIhaspublishedtechnicalpapersonthefollowingtopicsduringJuly–September2018

Sl. No. Topic / Title Authors Presented / Published in Conference/

Journal

1. Study of effect of Water Droplets on thesurfaceofpolymericInsulators

B.YashodharaK.A.Aravind

Dr.PradeepMNirgudeDr.D.Devendranath

InternationalJournalsofNewTechnologiesinScienceandEngineering,VolumeNo.5,IssueNo.5,July2018,PP111to121

2. The effect of BaO.85CaO.15 ZrO.1 TiO.9O3(BCZT) nanoparticles on the criticalparameters of synthetic ester basednanofluids

Dr.P.ThomasNandiniEHudedmani

IEEE2ndInternationalConferenceonDielectrics-ICD-2018,heldatBudapest,Hungary,from1stto5thJuly2018

3. Characterization of LDPE-Metal oxideNanocomposites using Thermo-AnalyticalandSpectroscopicTechniques

Dr.B.NageshwarRaoS.VynatheyaR.Kandiban

4. AgeingIndicatorsofStatorWindingInsulationsubjected to Elevated Frequency Voltage &ThermalStresses

Dr.B.NageshwarRaoBurjupati

6. Identification of Slot Discharges in RotatingMachine Insulation System using VariableFrequencyPDMeasurement

RameshPNairDr.B.NageshwarRao

B.V.SumangalaIETJournal,May2018issue

7. An approach to develop a compacttransmissionlinetowerwithspecial8-leggedconfiguration

Dr.M.SelvarajV.K.Shukla

Dr.R.RameshBabu

InternationalJournalof“SteelStructures”,June2018issue

8. Thermal characterization of Polyethylene-metal oxide nanocomposites used aselectricalinsulationinHVDCcables

Dr.B.NageshwarRaoAnjuR.K

AshwinParthasarathy

IEEE12thInternationalConferenceonPropertiesandApplicationofDielectricMaterials(ICPADM-2018),heldatXian,China,from20thto24thMay,2018

9. Effect of moisture and geometricalparameter on dielectric behavior of esteroil impregnated insulation using dielectricspectroscopymeasurement

ManasRanjanPatraDr.B.NageshwarRao

Burjupati

10. Effect of Temperature on Slot DischargePatternMeasured inStatorCoilsatVariableFrequencySinusoidalVoltageExcitation

RameshPNairDr.B.NageshwarRao

ThirumurthyB.V.Sumangala

11. “SignificanceofTransformerOilTesting” Dr.P.K.Maiti RegionalPowerMeetheldatKolkata,organizedbyIOCL,on10thAugust2018.

12. EvaluationoftheeffectsofUVradiationsonoutersheathofCables

P.N.AshithaK.P.MeenaS.Ganga

Publishedin8thInternationalConferenceonCablesandwires,CABLEWIRE-2018,heldinNewDelhi,on23rd&24thAugust2018.


Sl. No. Topic / Title Authors Presented / Published in Conference/

Journal

13. Assessment of Properties of InsulationMaterialsofhousewiringcable

R.ArunjothiP.V.SatheeshKumar

ThirumurthyG.K.RajaK.P.Meena

8th International Conference on Cables andwires “CABLEWIRE- 2018”, conducted byIEEMA, at New Delhi, on 23rd & 24th August201814. ScreenedSeparableConnectorsforcompact

CableTerminationsofDistributionNetworks:Evaluationcriteria&FailureModes

ThirumurthyR.ArunjothiK.P.Meena

15. ClusterBasedProtectionCoordinationusingaNewVoltageCurrentTimeInverseRelay

Dr.ManoharSinghMs.AnubhaAgrawal

IEEE Power & Energy Systems GeneralMeeting-2018,heldatPortland,U.S.A.,from5thto9thAugust2018

16. AMI and Theft Detection in Smart Grid: AReview

PriyamvadaChandelB.ASawale

Journal of Emerging Technologies andInnovative Research (JETIR), Volume No.5,IssueNo.6,pageno.811-814inJune2018

17. EvaluationofSmartandPrepaymentEnergymeterundershortcircuitfaultconditions

SurendraKalambeB.A.Sawale

ConferenceonSmartmeteringpost-paid,pre-paidandnetmetering,organizedbyCBIP,NewDelhi,on6th&7thSeptember2018

18. Performance test on 1200kV, AC voltagemeasuring system of CPRI, UHVRL,Hyderabad.

Dr.P.RajamaniK.A.Aravind

Dr.PradeepMNirgude.National Conference on Electrical andElectronics Measurements (NCEEM-2018),organised by CSIR – National PhysicalLaboratory,NewDelhi,heldon19thSeptember2018

19. Performanceteston±1200kV,HVDCvoltagemeasuringsystemofCPRI,UHVRL,Hyderabad

K.A.AravindDr.P.RajamaniB.Krishna

Dr.PradeepMNirgude

20. “AgeingBehaviorofMineralOilBasedAl2O3” Dr.P.KMaiti onedayworkshopon“PerformanceEvaluationand Acceptance Criteria of Liquid DielectricsforuseinPowerTransformersasperNationaland International TestNorms,” held at STDS-CPRI,Bhopal,organizedbyCPRI-STDS,Bhopal,on28thSeptember2018

21. Symmetric Supercapacitor performanceof CaCu3Ti4O12 decorated polyanilinenanocomposite

M.PadminiDr.P.Thomas

Published in Electrochemicia Acta, Elesiver.Doi:10.1016/j.electacta.2018.09.179


Vertical drop impact tester facility at insulation division:

Mechanical impacts are likely to stress electro technicalequipmentsinservice.Oneofthewayinwhichthisstresscanbe reproduced in the lab is by usinghammer tests of variousseverities.WiththisviewtheDivisionhas fabricatedaVerticalDrop Impact Tester employing vertical hammer for stresstesting.Theinstrumentiscapableofsimulatinganenergyof2J,5J, 10J, 20J and 50J.Other energy levels as required can alsobe simulated by changing the drop weight. This instrumentcompliesto IEC60068-2-75, IEC61914,BSEN50483,NFC33-020etcandcanbeusedforstresstestingofcablecleats/clamps,enclosures,connectorsetctonameafew.

New Test FacilityPD Test Facility at UHVRL, Hydrabad

Vertical drop impact tester

AccoladesThe technical paper titled “Performance test on 1200kV,AC voltage measuring system of CPRI, UHVRL, Hyderabad”authored byDr. P Rajamani, EngineeringOfficerGr.3, UHVRL-CPRI, Hyderabad got the “best oral paper award (First)” inNationalConferenceonElectricalandElectronicsMeasurements(NCEEM-2018),organisedbyCSIR–NationalPhysicalLaboratory,NewDelhi,on19th&20thSeptember2018.

Ultra High Voltage Research Laboratory (UHVRL), of CentralPowerResearchInstitute,Hyderabad,hascommissionedanewUHV Indoor Shielded laboratory of size 35 (H) x 35 (W) X 50(H). The laboratoryhas1200 kV, 2A, 2400 kVAUHVACpartialdischarge free test system consisting of 2 ×600 kV cascadedtestingtransformertoperformpartialdischargetestsonvariouselectricalequipment.The laboratoryhasabackgroundpartialdischargeoflessthan5.0pCatatestvoltageof850kV.Twosliding doors of 10m (height) × 8m (width) is giving perfectdarkness and shielding, which facilitates to perform visualcoronatestevenduringdaytime.Thelaboratoryhasaambientnoiselevelaslowas20-30µV.Thisfacilitatestoperformradiointerference voltage measurement test even with maximumpermissibleradiointerferencevoltageemissionlimitsof250µValso. The indoor laboratory is doubly shielded having ElectricOverheadTravellingcranewith2hookseachof5toncapacity.Itisalsoequippedwith2numbersof5tonwinchesforerectionandhandlingoflargeelectricalequipment.

Usingthisfacilitythefollowingtestsareperformed

1. Partialdischargemeasurementtestoncurrenttransformer,capacitivevoltagetransformer,bushings,lightningarrestersandGISofupto800kVsystemvoltage

2. Radiointerferencevoltagemeasurementtestonelectricalequipmentofupto800kVsystemvoltage

3. Typeandsomespecialtestsoninstrumenttransformersofupto800kVsystemvoltage


Date post:	18-Dec-2021
Category:	Documents
Upload:	others
View:	4 times
Download:	0 times

CPRI Newsletter 145 issue English

Documents