ABB - SVC a cost and time effective option to a 330 kV grid

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1、SVC:acostandtimeeffectiveoptiontoa330kVgridexpansionPowerconsumptionisincreasingataconsiderablepaceinSVC:theoptimumsolutionWesternAustraliaduetotheresourcesboomandtheassoci-TheSVCalternativewasconsideredthemostappropriate,as:atedpopulationincrease.Wes

2、ternPower,ownerandopera-−Itmettherequirednetworkloadgrowth(connectionoftorofthegridinfrastructure,wasstudyingvariousoptionsapproximately525MWofnewgenerationintheregiontoaccommodateincreasinglevelsofpowertransferfromwithoutcompromisingsystemsecurity)in

3、dependentgeneratingfacilitiesinthesouth-westwithout−Itwaspossibletoimplementwithintherequiredtimeframedestabilisinggridvoltagelevelsthatmayhaveledtovolt-−Itwasthemostcosteffectiveandpracticalsolution.agecollapse.Thechallengewastofindasolutionwithinthe

4、existinginfrastructurethatguaranteedpowersystemsecurityTheSVC,suppliedbyABBandlocatedattheSouthernTermi-inthesouthwestarea,whilecopingwithincreasingdemandnalStationisratedat132kV,100Mvarinductiveto200MvarfromtherapidlyexpandingmetropolitanareaofPerth.

5、capacitive(-100/+200Mvar)anddesignedtomanagegridvoltagesfollowinganoutageofa330kVtransmissionline.ItAnumberofoptionswereconsidered,including:maintainsvoltagestability,providesflexibilityfortransmission−DeferringenhancementoftheNetworkthatwouldrequiree

6、quipmentoutagesandbalancestheincreasedflowofenergyadditionalgenerationtobelocatedinthemetropolitanenteringthenetworkfromnewgenerators.area.−Installinganew330kVtransmissionline,thiswouldhaveAdditionally,thefollowingtasksareperformedbytheSVCbeenatahighc

7、ostandwouldhavetakenaconsiderableconnectedtothegrid:timeduetoenvironmentalapprovalsandconstruction−Preventingsystemover-voltageduringloadrejectionevents;period.−Enablingthemanagementofpowersystemstabilityincase−Installingcapacitorbanksandsynchronousco

8、ndensers.ofsystemdisturbances/powersystemfaultswithoutresort-Thisdidnotmeettherequirementsandwastooexpensive.ingtounder-frequencyorunder-voltageloadshedding.−InstallingaStaticVarCompensator(SVC).Automaticcontrolofexternalcapacitorbankshasbeen1