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1、CONDITIONINGOFPOWERGRIDSSERVINGOFFSHOREWINDFARMSBASEDONASYNCHRONOUSGENERATORSR.Grünbaum,P.Halvarsson,D.Larsson,P.R.Jones*ABBSweden*ABBLtd,UKKeywords:Utilityinterface,Inductiongenerators,compensationwillthenformandintegralpartoftheReactivepower,Voltagestability,Windfarm.netwo
2、rkscheme.EvidencesuggeststhattheincreasedrevenuefromAbstractexploitinghigherwindspeedsfartheroffshorecanoutweightheincreasedcablecostsandelectricallosses.Windpowerisgainingmomentumintheworld´senergyThemostcommonwindpowergeneratorisbasedonthebalance.Severalissueshavetobeaddre
3、ssedwheneverasynchronousmachine,sinceitisrobustandcostpower-generatingdevicesareconnectedtothegrid.Thiseffective.Inductiongenerators,however,donotpaperdescribeshowwindfarmsaffectgridvoltagesandcontributetoregulationofgridvoltage,andtheyarehowfaultsintheconnectedtransmissions
4、ystemimpactsubstantialabsorbersofreactivepower.Ideally,theyneedoninductiongeneratorsinawindfarm.Itwillalsobetobeconnectedtoverystiffgridsinordernottoinfluenceshownthat,whenthenetworkisweak,localdynamicpowerqualityinadetrimentalway.Thisisnotthecaseinreactivepowersupportmaypre
5、ventvoltagecollapseandreality,however.Quiteonthecontrary,windpowerismakeitpossibleforthewindfarmstorecoverandremainusuallyconnectedfaroutattheextremitiesofthegrid,oninserviceafterashort-circuitevent.Adynamicvoltagesubtransmissionorevendistributionlevels,wherethecontrolscheme
6、basedonacombinationofSVCandnetworkwasnotoriginallydesignedtotransferpowerSTATCOMtechnologywillbediscussed.backintothegrid.Thereactivepowerbalanceofasynchronousgeneratorscanbeimprovedtoacertainextentbyuseoftherecently1Introductionintroduceddoubly-fedrotorconcept.Tokeepthistec
7、hnologywithinreasonablecostmargins,however,rotorconverterratingsmustbekeptlimitedtosteady-stateAfterdecadesinthestartingblock,windpowerisfinallyrequirementsonly.Duringtransientoccurrencesinthetakingoffasaseriousandacceptedsourceofenergy,grid,theperformanceofdoubly-fedinducti
8、ongeneratorssustainableandenvironmentallyfriendly.World-wide,(DFIG)maywellp
