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ID:39448657
大小:4.38 MB
页数:6页
时间:2019-07-03
《The Constant Voltage Transformer (CVT) for Mitigating Effect》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、ESL-IE-00-04-27THECONSTANTVOLTAGETRANSFORMER(CVlJFORMITIGATINGEFFECTSOFVOLTAGESAGSONINDUSTRIALEQUIPMENTRalphJ.Ferraro,P.E.RandyOsborneRobertStephensPresidentProjectManagerSeniorElectricalEngineerPowerQualitySolutions,Inc.NorthTexasElectric,Inc.PennzoilProductsCo.Kno
2、xville,TN37922Borger,TX79007Shreveport,LA71109ABSTRACT"internally"hardenedequipmentthatcanprotectloadsfromthewidevarietyofpowerqualityvariationsthatElectricpowerqualityproblemsassociatedwithmaycauseproductivityproblems.Itwillbeshownthatainteractionsbetweendistributi
3、onandindustrialprocessCVT(seeFigureI)canmaintainarelativelyconstantcontrolsystemscanbeprevented.Surveysoflargeusersoutputvoltagedespitebriefvariationsininputvoltage.Ifthatbuypoweratthetransmissionanddistributionproperlysized,aCVTcanregulateitsoutputvoltagevoltagestu
4、muprelativelyfewcomplaintsabouttheduringavoltagesagtosixtypercentofnominalvoltagequalityoftheirincomingpower,whilesurveysofsmallforvirtuallyanyduration,asshowninFigure2.However,usersconnectedatsecondaryvoltagestumupnumeroustheyarenoteffectiveduringmomentaryvoltageco
5、mplaintsaboutthequalityoftheirincomingpower.interruptionsorextremelydeepvoltagesags(generallyThreemajorchangesinthecharacteristicsofcustomerbelowfiftypercentofnominal).CVTsareoftenfavoredloadsandpowerdistributionsystemshavealteredtheoverothersag-mitigationdevicesbec
6、ausetheyarenatureofthepowerqualityequation:(I)greaterrelativelymaintenance-free,withnobatteriestoreplaceorsensitivityofdevicesandequipmenttoelectricpowermovingpartstomaintain[3].Thefollowingparagraphsvariations,(2)theinterconnectionofsensitiveloadsinwilldescnbewhatt
7、olookfortodetermineifaCVTextensivenetworksandautomatedprocesses,and(3)anapplicationmakessense;howtosizetheCVT;adetailedincreaseinloadsthatusepowerelectronicsinsometypecasestudyofarefineryapplicationthatpointsoutwhatofpowerconversionconfiguration[1][2].Thispaperbenef
8、itswerederived;andhowreliabletheexistingCVTpresentsapplicationsoftheconstant-voltagetransformerretrofitapplicationshavebeen.(CVT)formitiga
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