低壓電網(wǎng)svg無功補償裝置設(shè)計

1、SHONGＵＮＩＶＥＲＳＩＴＹＯＦＴＥＣＨＮＯＬＯＧＹ畢業(yè)設(shè)計說明書低壓電網(wǎng)SVG無功補償裝置設(shè)計學(xué)院：電氣與電子工程學(xué)院專業(yè)：自動化學(xué)生姓名：閆萌萌學(xué)號：0812203383指導(dǎo)教師：周敬軍2012年6月AbstractIIAbstractInrecentyearstherapiddevelopmentoftheindustryhighpowernonlinearloadsincreasenotonlychangedthepowers

2、ystemwkstructureimpactonthepowergridtheharmonicpollutionisincreasingcausingsystemreactivepowerdistributionisnotreasonableevenmaycauselocalreactivepowershtagevoltagelevelisgenerallylowsothatthereareallstsofpowerqualitypro

3、blemssuchaslowpowerfactharmoniccontentishighthreephaseunbalancepowershockvoltageflickerwaveetc..Throughthereasonableschemeofpowersystemproperreactivepowercompensationcanmaintainthesystemvoltagelevelimprovesystemvoltagest

4、abilitytheutilizationratioofequipmenttoimprovethepowerfactavoidalargeamountofreactivepowerflongdistancetransmissionimprovethetransmissioncapacitybalancedthreephasepowersystemimprovethesafetyreliabilityoftheoperation.Inad

5、ditionalsocanreducethewkactivepowerlossreductioncost.Thedesignoftheuseofstaticvargenerat(SVG)technologyonthelowvoltagereactivepowercompensationSVGisbasedontheinstantaneousreactivepowertheyofreactivecurrentdetectionmethod

6、usingIGBTconsistingofvoltageinvertercircuitmodule.Themaindesignincludingthemaincircuitdesigncontrolcircuitdesignmeasurementunitdesigndrivingcircuitfiltercircuitunit.Duetotheneedtocarryoutreactivepowerdetectioncompensatio

7、nthecontrollerspeedishighercanDSPcontrolunitdesign.ThedesignofSVGsystemstructureincludesthefollowingparts:maincircuitcontrolcircuitameasuringcircuitadrivecircuitapowersupplycircuitetc.Measuringcircuitofloadcurrentsignala

8、cquisitiondevicetheoutputcurrentsignalsystemaccesspointvoltagesignaltheDCsidecapacitvoltagesignaldatathenthedatasignalsaretransmittedtothecontrolcircuitthecontrolcircuitaccdingtothecontrolstrategyfromthemeasuringcircuitt