静止无功补偿装置的开发和应用

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1、ABSllLACTABSTRACTWiththefastdevelopmentofpowerindustry,thecapacityofpowersystemiSincreasing．andthestructureofelectricgridsiSmorecomplexand&dormous。sothestabilityproblemofpowersystemismorenotable．Atthesametime．也eimpactiveloadsandnonlinearloadsareincreasinglargely,andthefluctuationandf

2、lickerofvoltageandthelowpowerfactoraremoresevere．Therefore．itisnecessitatedthesearchandapplica缸onofne_wpowercon：廿ollerstominimizelossesandmaximizethestablepower-transmissioncapacityofexitinglines，andsolvepowerqualityproblems．Presently,FlexibleACTransmissionSystem(FACTS)technology,bas

3、edontheapplicationofavarietyofnewpower-electroniccontrollerforactiveandreactivepoweronselectedlines．isbecomingallintegralcomponentofmodernpowertransmissionanddistributionsystems．TbeobjectiveofthisdissertationistoanalyzetheinteractionsamongtheshuntFACTSdevices．SVCetc．forvoltagecontrol

4、onaWansmissionanddistributionlines．111estaticandtransientstabilitiesCanbeimproved．voltageflickercallberestrained，andpowerfactorCallbeincreased。SOtheseFACTSdevicesareattachedmoreimportance．Asamainsolutiontocompensatereactivepower,staticVarcompensatorbasedonthyristor-controlledCallcomp

5、ensatereactivepoWerpreferably．Inthisarticle，thetheoryandcontrolmeansofSVCbasedonthyristor-controlledhavebeenresearched,andthemechanismofSVCtocontrolvoltageandimprovestabilityofsystemhasalSObeenanalyzed．Aimedatcompensatingobject,thesuitablestructure，parametersandcontrolstrategyhavebee

6、nselectedthroughanalyzingandcomparing．Thena0．4kV150MV打capacity．adjustableSVCequipmentbasedonDSP-eontrolledhasbeendeveloped．Theresultsofactualtestandfieldworkshowthatcontrolstrategyisvalidandcreditable．andtheequipmentcallcompensatereactivepowere伍cientlyanditsrespondspeedishigh．Voltage

7、ofIoadhasbeenstabilizedandpowerfactorhasbeenincreased．Keywords：Thyristor；StaticVarCompensator；VoltageControl；VoltageFlicker；StabilityofSystem；PowerFactorⅡ东南大学学位论文独创性声明本人声明所呈交的学位论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表或撰写过的研究成果，也不包含为获得东南大学或其它教育机构的学位或证书而使用过的材料。与

8、我一同工作的同志对本研究