基于STATCOM的電鐵負序和無功綜合補償的研究.pdf

1、南昌大學碩士學位論文基于STATCOM的電鐵負序和無功綜合補償的研究姓名：戴永濤申請學位級別：碩士專業(yè)：電力電子與電力傳動指導教師：戴文進20081201ABSTRACTABSTRACTInthispaper，fromthepointofviewonpoweranewwayofanalyzing3phaseunbalancecurrentisgivenBythiswaythecompensatingdynamicallynegative

2、sequenceandreactivecurrentwhicharegeneratedbytheelectrictractionloadwithSTATCOMisrealizedOnthecompensationsideoftraction—transformerfortestingelectriclocomotive，theapproachofIGBTcontrollingSTATCOMhasbeenused，whichcanbere

3、altimecompensating，andbythistechnologythenegative—sequencecurrentandreactivecurrentonthepowersideofthetransformeraredecreasedunderthenationalstandardThecontrollerisakeypartofthecompensationequipmentAnditscontrolcircuit，c

4、urrentdetectingcircuitandsynchronizationtriggercircuitaredesigned，SOtheinstantaneousimpulsecurrentisbereducedlargelywhentheSTATCOMcompensationcircuitisclosed，andthereliabilityoftheequipmentisimprovedgreatlyTheequipmentis

5、basedonthedigitalsignalprocessor(DSP)，whichcontainsmultiplicatefunctions，suchasresistanceandreactivepowermeasurement，STATCOMauto—triggering，failureauto—diagnosis，failuredisplayandalarmTheequipmenthasbeenusedintheShangHai

6、RailwaysBureauInaddition，basedonthetransientreactivepowertheorythepaperanalyzesrealtime，thegeneraldetectingmethodsforreactive，thefundamentalnegativesequenceandharmoniccurrentsinthree—phasecircuits，andgivesanewdetectingwa

7、yoffundamentalreactive，thatisthenegativesequencecurrents—theapproachofindirectFBDcurrentdetectingTheapproachisefficientwhenthefundamentalreactiveandnegativesequencecurrentsalecompensatedwithSTATCOMFinallythemethodofhardw