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,,166-175,2022
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ASimulationApproachtoSolvePowerSystemTransmissionProblems
MaríaJuliaBlas
InstitutodeDiseñoyDesarrolloINGAR,
ConsejoNacionaldeInvestigacionesCientíficasyTécnicas,SantaFe,Argentina.
Correspondingauthor:******@santafe-
InstitutodeDiseñoyDesarrolloINGAR,
ConsejoNacionaldeInvestigacionesCientíficasyTécnicas,SantaFe,Argentina.
E-mail:******@santafe-
(ReceivedonAugust12,2021;AcceptedonJanuary8,2022)
Abstract
Thecostofelectricityisanindicatorofacountry'.
Hence,theoperationofElectricPowerSystemsconstitutesarealproblemthatconsistsofasetofstagesrelatedto
,weproposeanovelsimulationmodeltostudythestateoftransmissionlinesystems
discrete-
-lifeoperationsofElectricPower
Systemsfromgenerationtotransmissionstages.
Keywords-Discrete-eventsimulation,Electricpowersystem,Routeddiscreteeventsystemspecification,
Transmissionlines.
oftheElectricPowerSystem(EPS)wasfirstfocusedonlyonthebehaviorofgeneratorunits
(Haraetal.,1966).Overtime,itbecameevidentthatthestudyoftransmissionlineswasalso
,inefficient
programmingofEPSscouldsufferconsequencesthatrepresentgreateconomicorsocialimpact
(Haraetal.,1966).SimulationtoolsallowrecreatingthedynamicbehaviorofEPSonashortand
,suchsimulationtoolspromotetheevaluationfordispatching
electricityfromdifferentfarregions,withbothlarge-andsmall-scalegenerators,suchas
hydropowerplants,thermalpowerplants,photovoltaicparks,
,manyauthorsaffirm
thatthedispatchersimulatorEPRI-OTS(Bhattetal.,2015)isthecurrentstandardforsimulators
-schedulingthepowersystembyincludingtimeseries
analysis(Nogalesetal.,2002),adetailedmodel
ofthesystemispresented,
worksweredevelopedtoreducethecomputationaleffort,simplifiedmodelsofgenerators,anda
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BlasandAlvarez:ASimulationApproachtoSolvePowerSystemTransmissionProblems
PythonforPowerSystemAnalysis(PyPSA).ThistoolisafreesoftwaretoolforEPSsimulation
andoptimizationthatconsidersmultipleperiods(Brownetal.,2018).
Ontheotherhand,existingsimulationtoolsalsoincludethepossibilityofmodelingseveral
stageslikeplanning,operating,
considered,analysisofnetworkconditionsprovidesthedemanddataandtheinformation
,mostsimulationapproachesemployspecific
.(2002),
theauthorsdeveloptheElectricityMarketOperationSimulator(EMOS)
implementedforcompetingmarketbiddings,independentsystemoperators(ISOs),and
independentmarketoperators(IMOs).Thetoolhelpswithoperatingdecisionsrelatingtogetting
,participantsimplementthe
implementedforuserstoapplytheirapplicationstorepresentcompetencegenerically.
Severalworkshavebeendevelopedtoattendtheoperationandplanningoftransmissionlines
,theresolutionofthisproblemisfacedbyusingastochasticapproach.
RegardingthesimulationofEPS,inBrownetal.(2018),itsfunctionalityisanalyzed,including
linearpowertransmissionequationsandtheoptimizationmodelforoperatingthesystems(
mixedsimulationandoptimizationapproach).Thetestsystemofthepaperisbasedontwo
.(2013),ahybrid
simulationoftheHVDC(highvoltagedirectcurrent)powertransmissionsystemat500kV
DigitalPowerSystemSimulator(ADPSS).
Evenwhenalltheseapproachesareuseful,newtypesofproblemsemergewhenscheduledand
SystemSpecification(DEVS)formalism(Zeigleretal.,2018)hasbeensuccessfullyusedforthe
ModelingandSimulation(M&S).(2011),theauthorusesDEVStopresent
onhistoricaldatafordifferentmaintenancestrategies,scheduledmaintenance,andthecalled
condition-,theauthorsPérezetal.(2013)developedaDEVSframework
eventsand,consequently,.(2018),amodelbasedon
,themodel
productionanddemandforabetterdecision-makingprocessregardingtheproductionofbiogas.
However,inthatwork,itisassumedthatunitsdonotsufferanyfailureduringtheprogramming
(2020)developedasimulationmodelforstudyingthe
scheduledmaintenanceofhigh-voltagetransmissionlinestopreventoutages,orevenworst,
,afullrecompilationofthemethodstoorganizethescheduled
maintenancecanbefoundinShafieeandSørensen(2019).Thislastpaperreviewsseveral
methodologies,includingmathematicalprogrammingandDEVSapproaches.
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BlasandAlvarez:ASimulationApproachtoSolvePowerSystemTransmissionProblems
Basedontheabove,inthepresentpaper,weproposeanovelsimulationmodeltostudythestate
providesafulldefinitionoftheTransmissionLine(TL)statesconsideringasactive,inactive,
undermaintenance,
(TLS)isdesignedusingRDEVSformalism(Blasetal.,2017).Toshowhowthesimulation
modelisdefined,weintroduceacasestudyobtainedfromtheliterature.
Themaincontributionsofthispaperare:
Thedefinitionofasimulationmodelthatprovidesabehavioraldescriptionoftransmission
lines(individually)but,thatcanalsobeintegratedaspartofasystemwithoutrequiring
,ourapproachdoesnotdependonthesizeoftheEPSunderstudy.
Thestudyoftransmissionlinesthatconsidersreal-lifescenarioswithdetailedinformation
,ourapproachstudiestheimpactofscheduled
andunscheduledmaintenancesontheavailabilityoftransmissionlines.
Thedevelopmentofasimulationmodelforagenerictransmissionlinesystemthatcanbe
integratedwithotherapproaches/modelsrelatedtootherstagesofEPS.
,conclusionsandfutureworksare
detailedinSection4.
WeusetheRDEVSformalismastheM&SapproachtosupportthedesignoftheTLSsimulation
.(2017).Recently,ithasbeenimprovedto
supportthedefinitionofroutingprocessesfromaconceptualmodelingperspective(Blasetal.,
2021).Fromthegeneralapproach,weintroduceadiscrete-eventsimulationmodelthatisusedto
.
Then,weshowhowtheTLSdefinedinaone-linediagramcanbetranslatedtoRDEVSmodels
requiredwhensuchasystemismodeledasaroutingproblem.
&SApproachtoStudytheDynamicofaTransmissionLineSystem
elements,
includedintheanalysisoflineflowsareinductance,resistance,capacitance,andconductance.
Whenthecircuitislarge(500kVlines),,thestudy
,
,busvoltagelimits,and
dependenciesbetweenlines.
WhenaTLstopsworkingandhasnotyetfinisheditslifecycle,
,
suchasanimalsattackingphases,trees,weatherconditions,andfailuresinthegeneration
,impossibilitiestosupplyusers,or
evenworse,
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BlasandAlvarez:ASimulationApproachtoSolvePowerSystemTransmissionProblems
,thispaperproposesan
focusesitsattentiononthewayinwhichlinesareconnectedandtherelationshipsbetweenthem
,asimpleandconfigurableabstractionmodelis
definedbasedontheconnectionamonglineswithaimstostudyaTLS.
TheRDEVSformalismisbasedonthreetypesofsimulationmodels:essentialmodel,routing
model,&Sof
networktopologyasfollows:essentialmodelsareusedtodefinethebehaviorofroutingentities,
routingmodelsareusedtodefinethestructureofroutingentities,andnetworkmodelsareusedto
,
,
andsimultaneously,
electricityforanyreason(.,duetoscheduledorunscheduledmaintenance),thesuccessorsofL
,thesetofcomponentsofaTLSmodeledasnetwork
-
(.,
TLstructureandTLS,respectively),onlytheessentialmodel(.,theTLbehavior)shouldbe
formallydefined().
&SofTLS.
ComponentRDEVSModelDescription
TheTLSismodeledinaRDEVSnetworkmodelfollowingthecasestudyunder
TLSNetworkmodel
evaluation.
TransmissionlineEachTLismodeledinaRDEVSroutingmodelthatunifiesitsbehaviorwiththe
Routingmodel
structureroutingpolicyobtainedfromtheTLsplacedupstreamanddownstream.
,theTLbehavioris
Essentialmodel
behaviormodeledinaRDEVSessentialmodel.
ThespecificationofagenericanduniquesimulationmodelforanyTLSisthemainbenefitof
employingRDEVSformalismastheM&Sfoundation(.,modelingonlythebehaviorofthe
domainelementsascomponentswithoutworryabouttheimplementationoftheroutingprocess
(Blasetal.,2017)).Then,oncetheessentialmodelfortheTLisdefined,ourapproachallows
usingsuchaM&SmodelforstructuringaTLSbasedon