鋁電解生產(chǎn)中PLC穩(wěn)流控制技術(shù)的開發(fā)與應(yīng)用.pdf

1、蘭州理工大學(xué)碩士學(xué)位論文鋁電解生產(chǎn)中PLC穩(wěn)流控制技術(shù)的開發(fā)與應(yīng)用姓名：牛永蘭申請學(xué)位級別：碩士專業(yè)：電氣工程指導(dǎo)教師：郝曉弘楊滔20050501蘭州理工大學(xué)1：：程學(xué)住論文AbstraclAbstractBeinganenergy—intensiveindustryvariousmeasuresforreducingpowerconsumptionhasbeenintroducedinaluminumproduction，amongw

2、hichusinglargeprebakecellsandadoptingadvancedrectifyingtechniquetostabilizepotcurrentaretwoprincipalapproachesCurrentlystabilizedcurrenttechniqueisbeingusedinsoderbergpotstoimprovepowersupplystatusaswellaslowerpowerconsu

3、mption，Inthebackgroundofdesignanddevelopmentofstabilizedcurrentcontroltechnique，thispaperinlightofproductionpracticethataluminumsmeltorsusuallysupplypowertopoflinewimlargepowerdioderectifyingdevicevoltageadjustmentandaut

4、omaticcurrentstabilizationmethodwhichcouldbelabeledas“stabilizedcurrenttechniquewithloadedvoltageregulationbyrectifyingtransformerdiodesaturatedreactor’，proposestosubstitutePLCstabilizedcurrentcontrolfortraditionalanalog

5、circuitstabilizedcurrentcontr01Inaddition，thepaperalsoillustratesthefundamentaltheoryandrealizationofPLCstabilizedcurrentcontrolsystemaswellaSanalyzesthesystemsdifficultypointscontrollingapproachandoptimalselectionofcont

6、rollingalgorithmBydiscoursingupondevelopmenttool，selectionandconfigurationofdatabase，thepaperinitiatesanoverallsystemplanbasedonPladjustmentThetechnicalplanaRowstoconstituteatandemcontrolimbeddedwimbigdosedloopandsmallcl

7、osedloop、uponwhichthedesignandadjustmentofthesystemuscompletedThesystemmainlyconsistsoftwosubsystems，ie，singlestandstabilizedcurrentcontrolandpotlinecurrentcontr01Thedoubleclosed—loopcontrolfunctionedasakeypartofthewhole

8、systemissupposedteceivefeedbackinformationandemendtheerrorofthesetvaluebyutilizingthemeasureddataThesystemhasbeensuccessfullyputintoapplicationinLanzhouAluminumCompanyLimitedKeywords：Aluminumproduction，Siliconrectilyingd