欢迎来到天天文库
浏览记录
ID:34020141
大小:2.26 MB
页数:47页
时间:2019-03-03
《基于hht的微网电能质量检测与分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、AbstractAbstractWiththecontinuousdevelopmentofscienceandglobalindustrialization,moreandmorepeopleareconcernedaboutpowerquality.Inordertopromoteenergyproduction,supportsustainableandhealthydevelopmentofcarbonindustriesandnewenergy,weshouldvigorouslypromot
2、ethenewmodelthatcombinesthedistributedgenerationandsmartgrid.Itrequiresthatsmartgridiscompatiblewithdistributedgenerationandenergystorage.Microgridtechnologyprovidestechnicalsupportforthecombinationbetweendistributedgenerationandsmartgrid.Therefore,there
3、searchcarriesoutpracticalsignificanceandmeetstoday'sgridtrends.Inmicrogrid,duetotheexistanceofdistributedgeneration,nonlinearloadandvarioususeofelectricalandelectronicequipment,powerqualityproblemsinmicrogridismorecomplexandprominent.Thepowerqualityprobl
4、eminmicrogridcanbesolvedbytheCustomPowertechnology.Inordertogovernthecomplexpowerqualityproblemseffectively,itisanurgentneedforanaccuratepowerqualitydisturbancedetectionmethod.Therefore,thestudyofpowerqualitydetectionmethodinmicrogridisofgreatimportance.
5、Thispaperfirstlyanalysisthecausesandhazardsofpowerqualityquestionsinmicrogrid.Thenaccordingtothecharacteristicsofpowerqualityinmicrogrid,thispaperleadstoHilbert-Huangtransform.Secondly,basedonthein-depthanalysisoftheempiricalmodedecompositionmethod,explo
6、rethecausesandsolutionsofendeffectandmodemixing.InordertosolvetheproblemofendeffectofEMD,thispaperuseadaptivewaveformmatchingextensionmethod.InordertosolvetheproblemofmodemixingofEMD,thispaperuseassistedhigh-frequencyharmonicstopretreattheoriginalsignala
7、ndgivestheempiricalformulaofhighfrequencyharmonics.Moreover,usetheimprovedHHTmethodtodetectthepowerqualitydisturbanceinmicrogrid.Thecorrectnessandeffectivenessofthemethodhavebeenverifiedthroughsimulation.Keywords:microgrid;improvedHHT;endeffect;modemixin
8、g;powerqualityII目录目录摘要.......................................................................................................................IAbstract........................................................................
此文档下载收益归作者所有