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1、第32卷第19期中国电机工程学报Vol.32No.19Jul.5,20122012年7月5日ProceedingsoftheCSEE©2012Chin.Soc.forElec.Eng.89文章编号:0258-8013(2012)19-0089-07中图分类号:TM74文献标志码:A学科分类号:470⋅40含VSC-HVDC的交直流系统内点法最优潮流计算11122卫志农,季聪,孙国强,王超,孙维真(1.河海大学可再生能源发电技术教育部工程研究中心,江苏省南京市210098;2.浙江省电力公司,浙江省杭州市310000)Interior-p
2、ointOptimalPowerFlowofAC-DCSystemWithVSC-HVDC11122WEIZhinong,JICong,SUNGuoqiang,WANGChao,SUNWeizhen(1.ResearchCenterforRenewableEnergyGenerationEngineering,MinistryofEducation,HohaiUniversity,Nanjing210098,JiangsuProvince,China;2.ZhejiangElectricPowerCorporation,Hangzhou
3、310000,ZhejiangProvince,China)ABSTRACT:Sincethesteady-statemodelandoperation基于该稳态模型,将VSC-HVDC直流网络与交流系统结合principleofvoltagesourceconverter(VSC)istotallydifferent起来,对交直流系统进行联立求解,并对多组算例进行仿真fromthetraditionalhighvoltagedirectcurrent(HVDC)和分析,算例结果表明原对偶内点法在解决含VSC-HVDCconverter
4、,optimalpowerflow(OPF)algorithmfortraditional的最优潮流问题的能力上,保持了传统内点法最优潮流的高AC-DCsystemisnotsuitableforAC-DCsystemwithVSC效性,而在同样的条件下,预测–校正内点法迭代次数大大basedHVDC(VSC-HVDC).Thepaperpresentedasteady少于原对偶内点法。modelofVSC-HVDCsystem,whichwassuitableforsolving关键词:交直流系统;最优潮流;基于电压源换流器的高压th
5、eOPFproblembyusingprimal-dualinterior-pointmethod直流输电;原对偶内点法;预测–校正内点法(PDIPM)andpredictor-correctorPDIPM(PCPDIPM).Based0引言onthesteadymodel,DCnetworkandACsystemwerecombinedtogether,andcalculationsofseveraltestingcases随着新型电力电子器件的出现特别是全控型wereperformedonthishybridsystem.Simul
6、ationand器件的发展,基于电压源换流器(voltagesourcecomparisonresultsindicatethatPDIPMretainshighconverter,VSC)和脉宽调制(pulsewidthmodulation,performanceofthetraditionalinterior-pointalgorithminPWM)控制技术的新一代高压直流输电(highsolvingtheOPFproblemofVSC-HVDC,whileinthesamevoltagedirectcurrent,HVDC)已经成
7、为现实。1997situations,thenumberofiterationbyusingPCPDIPMismuch年投入运行的瑞典Hellsjon实验性工程是世界上lessthanthatusingbyPDIPM.第1个采用VSC的直流输电工程。此工程的意义KEYWORDS:AC-DCpowersystem;optimalpowerflow在于,它首次实现基于电压源换流器高压直流输电(OPF);voltagesourceconverterbasedhighvoltagedirect(VSCbasedHVDC,VSC-HVDC)技术的
8、工程化应current(VSC-HVDC);primal-dualinterior-pointmethod用,使直流输电进入了一个新的发展阶段,开创了(PDIPM);predictor-correctorP