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WhitePaper
WesupporttheSustainableDevelopmentGoals
Zerocarbonpowersystembasedprimarilyonrenewableenergy
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Executivesummary
TheIntergovernmentalPanelonClimateChangehasstatedthat“itisunequivocalthathumaninfluencehaswarmedtheatmosphere,oceanandland”,andthat“thestabilizationofgreenhousegasconcentrations…requiresafundamentaltransformationoftheenergysupplysystem”.Decarbonizing,orreducingthecarbonintensityof,theelectricitysectorisakeycomponentofreducingthesegreenhousegasemissions.
Thiswhitepaperconsidersthechallengeofdecarbonizingthepowersystem,theresultingrequiredtransitionahead,andwhatthismaymeanfortheIEC,itsmembersandthestandardsitproduces,whichguidetheworld’selectrotechnologysector.
Exposuretoavarietyofpressuresmeanspowersystemsaroundtheworldarealreadychangingandhavebeendoingsoforsomeyears.Powersystemoperators,usersandotherstakeholdersarefacingaonce-in-a-lifetimelevelofprofoundchallenges,rangingfromtheneedtosignificantlyincreasecapacitytosupporttheglobalreplacementoffossilfuelssourceswithelectricity,totheuptakeofnewgenerationdevicessuchassolar,windandmarineenergygeneration,todramaticallyshiftinggenerationandloadprofiles,andsignificantchangesinthecontrolandcommunicationsequipmentusedinthenetworkitself.
Commitmentstowardsnetzero
Over130countriesaroundtheworldhavecommittedtoagoalofcarbonneutralityornetzerocarbonemissions,andmanymorehavecommittedtosignificantreductionsintheirenergyintensity.Thesecommitments,tobemetoverthecomingdecades,willonlyacceleratethechangesalreadyseeninpowersystems.
Thechallengeofnetzero
Fundamentally,acommitmenttonetzerocarbonemissionshasprofoundimplicationsfortheelectricalpowersystemofanation.Theelectricitysectorisoneofthehighestsourcesofemissionsinmostnationsandisalsooftenconsideredthesectormostreadilydecarbonized.Thus,anationalcountry’snetzerocarbongoalcanbetakentoalsomeanagoalofnetzerocarbonfortheelectricityorpowersector.Furthermore,thetransitionofothereconomicsectorssuchastransport,towardslowercarbongoalswillhaveasignificantflow-onimpactonthepowersector.
Realizationofanetzerocarbonpowersystemisanincrediblechallenge.Atthetimeofwriting,carbon-emittinggenerationsourcesmakeupover60%ofelectricitysupplyaroundtheworld.Theremovaloftheseemissions,andtheneedtoaddcarbon-freecapacitytomeetnewelectricaldemands,willrequireanimmenseamountofworkacrossaverybroadrangeoftopics.Effortwillberequiredinpolicyandlaw,regulation,standardization,andtechnologydevelopment.
Theimplicationsofnetzero
Anetzeropowersystemwilllookverydifferenttothepowersystemoftoday.Anetzeropowersystemwillrelyonlargeamountsofwindandsolargeneration,perhapsnuclear,hydroormarinegeneration,andwillinvolvemuchmoreenergystoragecapacities,frompumped-hydrotobatteries.Fossilfuelgeneratorswilleitherbephasedoutorconvertedtozerocarbonoperation.
Thebroaderrequirementofnetzerocarbonemissionswilllikelyseemanynewloadsappearingonthepowersystem.Industriesfromtransport
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Executivesummary
tomanufacturingwillconvertfromfossil-fuelledequipment,suchasboilersorcombustionengines,toelectrically-drivenprocesses.Spaceheatingforhomesandbuildingswilltransitionawayfromfossilfuelstoelectricalheatingincludingtheuseofheatpumptechnology.Thesenewloadswilldramaticallyincreasedemandonthepowersystem–someestimateshavecountriessuchasCanadaneedingtomorethandoublesystemcapacityby2050.Ifmanagedcarefully,theincreaseindemandmayalsoassistwithpowersystemoperationandtheintegrationofvariablerenewableenergygeneration.
Generationandloadprofilesinthepowersystemwillbemuchmoredynamic,withsignificantswingsfromverylowconsumptiontohighconsumptionthroughoutaday,andseasonally.Thiswillrequiregenerationtobemuchmoreflexibleinordertomatchsupplywithrapidlychangingdemand,anditislikelysomeloadswillbedynamicallymanagedtomatchsupply.Anetzeropowersystemwillhavefarlessrotatinginertiathanthetraditionalpowersystemthatreliedonlargerotatingmachineswithsignificantmechanicalinertia.Inordertomaintainsystemsecurityandensurethereliableoperationofprotectiondevicesacrossthepowersystem,generatorsandstoragedevicesthatrelyonpowerelectronicinterconnection(suchassolarandwindgenerators,orbatteries)willneedtoemulatetheoperationalcharacteristicsofrotatingmachines.Thiswillrequirenewoperationalapproachesandregulatoryorotherincentivestoseetheseoperationalmodesbuiltintothemachinesandsystemsdeployed.
Thesechangesmeanthetransitiontoanetzeropowersystemwillrequirethepowersystemtochangeinmultipledimensions.Generationwillneedtomovetozerocarbonoperation.Thecontrolofelectricitygenerationwillbemuchmorecloselyintegratedwiththecontrolofloadsandstorage.Lastly,thepowersystemcontroltechnologieswillneedtobecomemoresophisticated,takingadvantageofthelatestdigitaltechnologiesto
manageapowersystemthatismuchmorecomplexthanthosebeforeit.
Thetechnologiesofazerocarbonpowersystem
Multiplestudieshaveshownthatinmanynations,hydro,windandsolararethecheapestformsofcarbon-freegeneration.Thesetechnologiesaregenerallywellunderstood.Thekeychallengeaheadisnotsomuchtheoperationofwindandsolargeneration,butrathertheirintegrationintothepowersystem,andthereliableoperationofapowersystemwithverylargeportionsofsupplycomingfromwindandsolargenerators.Windandsolargenerationneedtobelocatedwherethewindandsolarresourceisavailable.Insomecases,thiswillbeatgreaterdistancesfromelectricityloadcentres,requiringsignificanttransmissioninfrastructuretocarryenergytowhereitisused.Inothercases,solarandwindmaybeavailableclosetoloadcentres,andthiswillreducetheneedforsignificantlongdistancetransmissioninfrastructure.Theelectricitydistributionsystemwillneedtoabsorbmassiveamountsofdistributedrenewablegeneration,electricvehicles,heatpumpsandlocalenergystorage.Thishassignificantrepercussionsonthedesignofthepowersystem,whichwillnowneedtoenablesignificantlyvaryingandbi-directionalpowerflows.Meetingthischallengewillrequirenewsensingandcontrolschemesandtheprovisionofverylargeamounts(rangingfromsecondstoseasons)ofenergystorage.
Avarietyofothergenerationtechnologieshavepotentialtoassistinthetransitiontozerocarbon.Theseincludenuclearenergy(includingsmallmodularnuclearreactors),andhighlyefficientandflexiblecoalorgasgeneratorspartneredwithcarboncaptureutilizationandstorage.Thesetechnologiesremainintheirinfancy,andmanychallengesstillexisttotheirwidespreaduptake,nottheleastofwhichisthecostinvolved.
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Executivesummary
Whilemuchanalysisofthepathtozerocarbonpowersystemsfocusesontheenergygenerationandstoragetechnologiesonthe“supplyside”ofthesystem,considerationofthe“demand”sideofthepowersystemwillbecomeincreasinglyimportant.Insimplyreducingtheamountofenergyneededtobegenerated,energyefficiencymeasureswillhaveakeyroleinthetransitiontozerocarbonandhavebeenlegislatedbymostcountriesaroundtheworld.Demand-sideintegrationtechnologies,whichseektoactivelyanddynamicallymanagetheloadonthepowersystem,willalsohaveanincreasingrole,helpingtoreduceemissions,avoidinfrastructureupgrades,enableendcustomerstomakechoicesintheirenergyusageandinvestment,andensurepowersystemreliability.
Powersystemswillbecomemore“digitalized”,withnewinformationandcommunicationtechnologiesbeingintroducedacrossallreachesofthepowersystem.Similarly,thisdigitalizationwillimpactalloperationalprocesseswithinthesystem.Technologiessuchasedgecomputing,dataanalyticsandtheindustrialInternetofThingswillallowforbettermonitoringandcontrol,improvedenergyprovisioningandfasterresponsetofaults.Thebenefitsprovidedwillhelpacceleratethetransitiontonetzerocarbonoperation.
Standardsimplicationsofthetransitiontozerocarbon
Toensurethatenergysystems,platforms,devicesandmarketscantransitionandworkeffectivelyinazerocarbonpowersystem,standardshaveacriticalroletoplay,ensuringinteroperability,maintainingaminimumlevelofperformanceandsafety,andhelpingguidethetransitiontowardsnewtechnologiesandoperatingregimes.Whilearangeofstandardsexisttodaythatarerelevanttothezerocarbonvision,azerocarbonpowersystemwillrequireabroadrangeofnewstandardstoensurereliable,efficientandresilientsystemoperation.Thestandardsrequiredcovera
broadspectrum,rangingfromstandardsfornewtechnologies,suchasoffshorewindgeneration,tostandardsforfacilitatingthemuchtighterintegrationbetweengenerationanddemandthatwilloccurinthepowersystemofthefuture.Thesestandardsmustnotonlysupportintegrationwithinthepowersystemitself,butalsointeractionsbetweenthepowersystemandbothconsumersofenergyandexternalprovidersofenergyservicestothepowersystem.Giventhemassivecomplexityofazerocarbonpowersystem,asystemsapproachwillneedtobetaken.Systemstandardsarelikelytobeneededconsideringrequirementssuchastheenvironment,safetyandhealth.
Tomeetclimatetargets,thetransitiontoazerocarbonpowersystemneedstohappenveryrapidly,muchfasterinfactthanmanyofthechangesseeninthepowersystemoverrecentdecades.Ifstandardsandregulationlagtherolloutofnewtechnologiesinthepowersystem,thereisasignificantriskofdelayedimplementation,inefficiency,misapplication,majoroutage,technicalfailuresorotherharm.
Standardsandregulatorychangeoftenhappenatapacesignificantlyslowerthansomeofthechangesoccurringinthejourneytozerocarbonpowersystems.Thus,inthisjourney,aswellasaneedfornewstandards,thereisalsoaneedtoconsidertheprocessesofcreatingnewstandardsandregulation,sothattheseprocessescan(attheveryleast)keepupwiththepaceofchangeoftechnologyandtheshorttimeframesinvolvedinthetransitionofthepowersystemtonetzero.
Theabundanceofnewtechnologiesinazerocarbonpowersystem,andtheconvergenceofdistributedresourcesandnon-powersystemtechnologieswithlarge-scalepowersysteminfrastructure,willrequireamoretop-downapproachtostandardization.Thisshouldbebasedonasystemsapproachthatstartsattheoverallsystemarchitecturelevel,ratherthanthetraditionalbottom-upapproachthatfocusesonindividualcomponents.
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Executivesummary
Thiswhitepaperisstructuredasfollows:
Section1introducesthemassivechangesoccurringintheworld’spowersystems,thewhitepaperanditsaim.
Section2considerstheforcesthataredrivingpowersystemstotransitiontonetzero.
Section3reviewswhatazerocarbonpowersystemmaylooklike.
Section4considersthevariouspathwaystoazerocarbonpowersystem.
Section5introducesthetechnologiesthatwillunderpintherealizationofareliable,economicnetzeropowersystem.
Section6considerswhatthechangesdiscussedintheprevioussectionmeanfortheIEC,itsstakeholdersandstandardswork.
Section7concludesthepaperandprovidessomekeyrecommendations.
Netzerocarbonpowersystemsarenolongeraremotepossibilityofsomedistantfuture.Manycountriesaroundtheworldhavecommittedtonetzerocarbonemissionstargets,andavarietyofpressuresmeanthatpowersystemsaroundtheworldarechangingdramatically.ThesechangeshaveprofoundimplicationsforallIECstakeholders–fromsystemoperatorstoequipmentmanufacturersandserviceproviders,orpowersystemend-users.Understandingthechangesdetailedinthispaper,thenewtechnologies,operatingprinciplesandstandardsrequirementsinvolved,willensurethattheIECremainsattheforefrontoftheevolutionnowunderway.
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Executivesummary
Acknowledgments
Thiswhitepaperhasbeenpreparedbyaprojectteamrepresentingavarietyoforganizations,workingundertheIECMarketStrategyBoard.Theprojectteamincludedrepresentativesfromelectricalpowernetworkbusinesses,standardsorganizations,andequipmentvendorsfromaroundtheworld.TheprojectsponsorwasDrJianbinFan,fromtheStateGridCorporationofChinaandanIECMarketStrategyBoardmember.ProjectcoordinationwasbyPeterJLanctot,SecretaryoftheIECMarketStrategyBoard.CoordinatingauthorandprojectpartnerwasDrGlennPlattfromN.OGEEconsulting.
Theprojectteammemberswere(inalphabeticalorder):
MrCarlosAlvarez-Ortega,Huawei
ProfZhaohongBie,Xi’anJiaotongUniversity,China
MrGeorgeBorlase,UL
MrJonathanColby,StreamwiseDevelopment
MrQixiangFan,ChinaHuanengGroup
DrQiGuo,ChinaSouthernPowerGrid
DrHaoHu,StateGridCorporationofChinaMrYunChaoHu,Huawei
MrHuaHuang,StateGridShanghaiResearchInstitute
MrHirokazuIto,TokyoElectricPowerCompanyMrQunLi,StateGridJiangsuResearchInstitute
MrGangLin,HuanengYangtzeEnvironmentalTechnologyCompany
MrTianyangLiu,ChinaHuanengGroupCarbonNeutralityResearchInstitute
MrZhongLiu,ChinaSouthernPowerGridMrGeertMaes,Huawei
MrAndrewMcConnell,CitiPower,PowercorandUnitedEnergy
DrLucMeysenc,SchneiderElectricMrJedongNoh,EnSTARLtd.
MrJu-MyonPark,ZeroENLtd.
MrSalvatorePugliese,ItalianElectrotechnicalCommittee(CEI)
MrHaiQian,ChinaSouthernPowerGrid
MrKeSun,EconomicResearchInstituteofStateGridZhejiangElectricPowerCompany
MrJonSojo,TratosLtd.MrPascalTerrien,EDF
MrSebastiaanVanDort,BritishStandardsInstitution
ProfDirkVanHertem,KULeuven
MrIvanoVisintainer,ItalianElectrotechnicalCommittee(CEI)
MrDi(Andy)Wang,Huawei
MrZiweiWang,HuanengLancangRiverHydropowerInc
MrHee-JeongYim,KoreanAgencyforTechnologyandStandards
MsEllenYin,Huawei
DrWedianYoussef,SchneiderElectricMrGuoxinYu,Haier
MrLiangZhao,ChinaHuanengGroupCarbonNeutralityResearchInstitute
MrDehuaZheng,Goldwind
9
Tableofcontents
Executivesummary3
Listofabbreviations13
Glossary17
Section1Introduction19
1.1Background19
1.2Scopeanddefinitions21
1.3Structure22
Section2Thezerocarbonpowersystem:drivingfactorsandmarketneeds23
2.1Climatechange23
2.2Achievingnetzero23
2.3Governmentpolicy24
2.3.1Africa25
2.3.2Australia25
2.3.3China26
2.3.4France26
2.3.5Italy27
2.3.6Japan27
2.3.7RepublicofKorea28
2.3.8TheUnitedStates28
2.4Marketchanges29
2.5Reliablepowersupply30
2.6Affordableandeconomicallycompetitiveenergy30
2.7Changingenergyconsumption31
2.7.1Changingloadprofiles31
2.7.2Newloads32
Section3Characteristicsofazerocarbonpowersystem34
3.1Largescaledeploymentofzerocarbonenergygeneration34
3.2Highpenetrationpowerelectronicsanddecreasinginertia34
3.3Digitalizationofthepowersystem36
3.4Decentralizationofthepowersystem36
3.5Bulkpowertransfer37
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Tableofcontents
Section4Alternativepathwaystoazerocarbonpowersystem38
4.1Centralizedvsdecentralized38
4.2Energyefficiency38
4.2.1Electrificationmakesenergyefficiencyeasier39
4.2.2Standardsareessentialtohelprealizeenergyefficiencyoutcomes39
4.3Load/demandintegration39
4.4Electricalvschemicalenergytransferandstorage40
4.5Comparingtechnologyoptions:evaluatingemissions40
4.6Evaluatingzerocarbonsystems41
Section5Keynewtechnologiesandtheirchallenges43
5.1Newgenerationtechnologies43
5.1.1Efficientcoalgenerationtechnology43
5.1.2Carboncapture,utilizationandstorage44
5.1.3Nuclearpower45
5.1.4Solar46
5.1.5Wind46
5.1.6Smarthydropower47
5.2Energystorage48
5.2.1Usesofenergystorage49
5.2.2Energystoragetechnology49
5.3Transmissionanddistributionsystemtechnology50
5.3.1Control50
5.3.2Congestionmanagement51
5.3.3Highvoltagedirectcurrent52
5.3.4Protection53
5.3.5Demand-sideresponseandenergymanagement53
5.3.6Virtualpowerstations54
5.3.7Vehicle-to-gridtechnology55
5.4Hydrogen56
5.5Digitalizationofthepowersystem57
5.5.1IoT/smartsensing58
5.5.2BigdataandAI60
5.5.3Blockchain61
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Tableofcontents
5.5.4Cybersecurity61
5.5.5Simulation65
5.6Alternativetechnologies65
Section6Standardizationandconformityassessmentanalysis67
6.1Standardstofacilitateinterconnection,integrationandinteroperability68
6.1.1Bidirectionalvehicle-to-gridinteractioninthedistributionnetwork68
6.1.2Interactionbetweennaturalgasandelectricitysystems69
6.2Standardsforpowergenerationtechnology69
6.2.1Offshorewindpower69
6.2.2Faultride-through70
6.2.3Casestudy:EuropeanMarineEnergyCentrehydrogentesting70
6.3Standardsforpowertransmissiontechnology70
6.3.1Lowfrequencypowertransmission70
6.3.2HighvoltageDCpowersystemswithdirectgeneratorconnection70
6.3.3Superconductingcable71
6.4Pervasivedigitalizationofpowertechnology71
6.5Standardsforcybersecurity71
6.6Standardsforhydrogen-basedpowersystems72
6.7Powersystemcarbonmanagement/lifecycleassessment72
6.7.1Powersystemcarbonfootprintcalculation72
6.7.2Greenpowermarkets72
6.7.3Carbonstructure,utilizationandstorage72
6.8ConformityAssessment72
6.9Simulationandtestingprocedures73
6.10Thestandardizationprocess73
6.11Asystemsapproach74
Section7Conclusionsandrecommendations75
7.1Recommendationstogovernment,industryandbroaderstakeholders76
7.2Recommendationsregardingnewstandards76
7.3Recommendationsregardingstandardizationpracticesandprocesses76
AnnexA78
Bibliography80
13
Listofabbr
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