电气工程外文文献原文与译文---应用于独立运行微电网的潮流计算方法

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1、毕业设计（论文）外文文献译文及原文学生：王帅学号：200806010123院（系）：电气于信息工程学专业：电气工程及其自动化指导教师：宋玲芳2012年月日ApplicationofthePowerFlowCalculationMethodtoIslandingMicroGridsY.H.Liu.Z.Q.Wu,S.JLin,N.P.BrandonAbstract:MostexistingpowerflowcalculationmethodsuseaswingbusasareferencenodeforthewholesystemIncreasingly.newdistributedgenera

2、tionresources(DGRs)arebeingaddedtothegrid.Sometimes,localdemandorfailureofthegridcanresultinindependentmicro-gridsforming,whichareknownas'islanding'systemsHowcver.currentDGRsareoftenlimitedsuchthatthereisnosingleDGRwhichcanbalancethepowerdemandandstabilizethefrequencyofthemicro-grid,meaningthatther

3、eisnoswingbusfromwhichthemicrogridcanbemanaged.Accordingtoexistingresearch.aDGRcoupledwithadcdicatedcnergystorage.systemandsuitablecontrolstratcgy(heretermedadistributcdgeneration(DGsystem)hastheabilitytoadjustitsoutput.ThismeansthataDGsystemcanresponddynamicallytogridevents.ThismeansthataDG.system

4、canrcsponddynamicallytogridevents.Inthispaper.anewpowerflowcalculationmethod(basedonNewton-Raphsonpowerflowsolution)withgoodconvergenceisproposedthatcanaccommodatethelackofaswingbusinanislandingsystem.Thisaddressespowerflowresultsandthefrequencyofthewholesystem.Themethodproposedisdiscussedindetailw

5、ithcxamplesofdiffcrentDGsystemswithvariousadjustmentcoefficientsandloadmodels.Theresultsarccomparedwiththoseofatraditionalpowerflowcalculationmcthodbasedaroundtheuseofaswingbus.Inconclusion,thispapershowsthattheimprovedmethodismoreapprpriateforislandingsystemswithmeshtopologyandformicro-gridmanagem

6、entwihtnoswingbus.IndexTerms--DistributedGeneration;Islanding;MicroGrid;PowerFlowCalculation;PowerSystemⅠ.NOMENCLATUREA.Indexesi,jnumbefofnode;B.Constantsnnumberofnodsofthesystem;mnumberofnon-power-sourcenodesinthesystem;AipercentagecoefficientofconstantimpedanceloadinacompoundloadmodeBipercentagec

7、oefficientofconstantcurrentloadinacompoundloadmodel;Cipercentagecoefficientofconstantpowerloadinacompoundloadmodel;equivalentregulationcoefficientofactivepowerofDG;equivalentregulationcoefficientofreactivep