交直流混联系统的大停电故障序列分析-(5450)

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1、摘要AbstractHVDCtransmissiontechnologyundertakesthemaintaskinthepowertransmissionfromwesttoeastandnationwidenetwork,resourcesbeallocatedrationallyandusedeffeetively.Diversifiedandflexiblesystemoperationwhileincreasingthecomplexityofthesystemstructure.HVDCsystemsar

2、elikelyinduceDCblockfaultunderanyACsystemseriousfaults,inthiscontext，therearelotsofproblemsneedtobesolvedinthefiledofAC-DChybridpowergridblackoutsSequences.ThefaultsourceofAC/DChybridtransmissiongridblackoutdistinguishingbetweencascadingfailureofcasualrelationsh

3、ipandindependentfailureofacausalrelationshipbasedontheevolutionmechanismoflargeblackoutsfailure,anewmethodonfailuresequenceforecastingwithinMulti-infeedDCSystemisproposedinthispaper.consideringthenetworkstructureandreal-timerunningstateofthesystemtorecognizeInit

4、ialfaultdistinguishingAC/DCtransmissionline.aindexsystemcanreflecttransmissionlineimportanceisbuildasindependentfailuremaliceattackcriterion,consideringcascadingfailuresequenceisgreatlyrelevant,thefollowing-upfailurecanbeforecastedbywhichconsidersboththelineimpo

5、rtanceandtheprobabilityindexpromotefaultpropagation,itcanbeusedtohelpdesignersandoperatorsofpowergridstogetthefailuresequenceandkeylinesofacertainfalutattack.takeshanghaipowergridforatest,Andthesimulativeresultverifiestheeffectivenessoftheproposedmethod.Keywords

6、：blackout；cascadingfailure；independentfailure；AC/DChybridsystem;II目录目录摘要......................................................................................................................................IAbstract...............................................

7、................................................................................II第1章绪论.......................................................................................................................11.1课题的背景及意义............................................

8、..................................................11.2引发电网大面积停电的关键因素分析...............................................................11.3基于连锁故障的大停电事故预测方法综述...........