基于DSP的电能质量分析仪的硬件设计

上海交通大学硕士学位论文基于DSP的电能质量分析仪的硬件设计姓名：唐亮申请学位级别：硕士专业：精密仪器及机械指导教师：赵春宇20080101VDSPDSPDSPDSPTITMS320C6713CPLDDSPCPLDABSTRACTVIABSTRACTNowadays,lotsofelectricinvertershavegotwidelyapplication.Ontheonehand,theyhavegreatlyenhancedtheproductivityundoubtedly.Ontheotherhand,theyhavedonegreatharmtopowerqualityoftheappliedelectricsystem.Howtoimprovepowerqualityandinsurethissensitiveelectronicequipment'sreliableoperationbecomesastringentandimportanttask,whichhasattractedgreatattentionsofspecialistfromhomeandabroad.Inthisarticle,weintroduceasetofonlinepowerqualitymonitorwhoisbasedonDSP(DigitalSignalProcessor).ThemonitormakesfulluseofDSPchip'sstrongoperationcapability.Itcanmonitorpowerqualityonline,displayreal-timemeasuredataandsavesuperscalardata,whichcanprovideaccuratedatatopowerqualityevaluationandimprovement.Thisdevicecanbeappliedtomediumandlowvoltagedistributionoutputsideortheinputsideoflargeconsumer.Structureofpaper:conceptofpowerquality;bringingforwardquestionsofpowerquality;measurementsofpowerquality;requirementsandrealizationofpowerquality'smeasurement;theapplianceanddevelopmentofDSPprocessorinpowerqualitymeasurement.Thencomesthedetaileddescriptionofthismonitor;A/Dconverting;designofDSPcircuit;systemcommissioninganddebugging.ThemonitorintroduceschipTMS320C6713ofTICompanyascentralprocessor.Itcanmonitordifferentparametersofpowerquality.Inordertosatisfytheneedofreal-timerequirement,CPLDisentitledforsystemlogicalcontrol.Thismonitorhaspowerfulfunctionsitsgoodperformancesuchasaccuratemeasurement,highmeasuringspeedandgoodstabilityhasgottestifiedinmanyfieldapplicationcases.Theapplicationfieldincludesdistributiongridanddifferentindustrialparks.Furthermore,itsextensibility,functionandperformanceismorecompetentthananyotherproductofsamecategory.KEYWORDS:DSP,CPLD,AD,PowerQuality,PLLIII2008318IV200831820083181(CustomPowerTechnique)[1]21.11.1.150Hz60Hz120PowerQualityIEC[2]80(1)2s1-2(2)(3)3:95%1.1.2[3]11min1min50Hz±0.2%Hz20.51min110%~180%10%~90%40.53s1.1.3()19904JGX-11A220KV935KV-220KV100MW[4]110KV1001.1.4[5](1)53(2)(3)(4)(5)(6);(7)(8)(9)[1](1)(STATCOM)6(2)(SSTS)(3)(DVR)(4)(UPS)(5)(APF)1.1.51990(GB/T12325-90)(GB/T15945-95)(GB/T14594-93)(GB/T15543--95)(GBIT12326-2000)(GB/T18481-2001)71.1GB12325-90135KV10%210kV±7%(3)220V+7%-10%GB12326-2000d1()rh−1000r≤LVMVd=1.25%-4%HVd=1.0%-3%LVMVd=2%HVd=1.5%LVMVHVstP1.00.9(1.0)0.8ltP0.80.7(0.8)0.6GB12326-90PCCstP10min;ltP2h;%kvTHD0.3854.02.06,1043.21.635,6632.41.2GB/T14549-9311021.60.8PCC95%GB/T15543-199512%4%21.3%PCC95%72min30min5minGGB/T15945-1995(1)±0.2%Hz±0.5%Hz;(2)±0.2%Hz1.1Tab1.1NationalStandardofPowerQuality1.1.6IEEE8IEEE1.IEEEStd519-1992[6]IEEEStd1159-1995[7]IEEEStd1100-1992[8]Instantaneous0.5-30InterharmonicMomentary30-3ssustained1minDistortionFactorTHD100%DF=×………………….(1.1)NotchDepthTIF,TelephoneInfluenceFactorIEEEStd519-19921.2.3.1.21.31.41.1SCRatPCCMaximumIndividualFrequencyVoltageHarmonics(%)RelatedAssumption102.6-3.0%DedicatedSystem202.0-2.5%1-2largecustomers501.0-1.5%AfewRelativelycustomers1000.5-1.0%5-20mediumsizecustomers10000.05-0.10%ManySmallcustomers1.2Tab1.2TheBasicRequirementsofHarmonicCurrent9SpecialApplicationsGeneralSystemDedicatedSystemNotchDepth10%20%50%THD(Voltage)3%5%10%NotchAreaAn164002280036500480VAnV/4801.3Tab1.3Therequirementsofdistortion1.1Fig1.1CaculationFormularofNotchBusVoltageatPCCIndividualVoltageDistortion(%)TotalVoltageDistortionTHD(%)69kVandBelow3.05.069kVthrough161kV1.52.5161.001kVandAbove1.01.51.4Tab1.4Distortionrequirements50%PCC101.1.7IEC198919927CENELECCENELECCLC/BT-TF686sec15IEC513A10s1501%Hz±500.5%Hz±99%506%Hz±503%Hz±1%501%Hz±500.5%Hz±99%506%Hz±503%Hz±1%502%Hz±501%Hz±95%5015%Hz±507.5%Hz±5%502%Hz±501%Hz±95%5015%Hz±507.5%Hz±5%B7110%NU±1095%10%NU±NU=230VNU=230VNU=400VNU=230V11295%5%NUSeverity1stP=0.8stP=95%4%NUSeverity1stP=0.8stP=3tip10-1000.560%10-1000.560%4()70%170%1510-50310-50361.5kVX(EarthFaultFactor)1.71.7-21276kVC2495%102%D(1)95%10(THD)8%335%1.5%91.5%1.5%90.5%0.5%56%6%75%5%113.5%3.5%133%3%172%2%191.6%1.6%231.5%1.5%232.5(0.2)%n+n22%2%41%1%40.5%0.5%(2)(Interharmonics)()0.5%~1%NU131.21.2.14020300[9];[10]1996IEEE(ICHPS)(ICHAP)FLUKELEMPQ116PQ102PQ106PQ132:14[11]1.2.2WTO10KV15;;;161.3DSP1DSP2ADDSP1.4172.1[20]2.1[11]18PCInternetINTERNETPCPQMPQMPQMInternetInternetInternetInternetInternet2.1Fig2.1TheSystemModuleofPowerquality[10][13][10][13]192.2IEC2.2.1DSP[2]1)2)ff3)4)DFTFFT5)2.2.21%100%−×(%)=…………2.1220V380V201U2U12100%NUUVU−∆=×……………………………………(2.2)30ms30ms1/min1s10s32.2.3IEC()(1cos)cosutAmttω=+Ω……………………………..(2.4)AωmΩcosvmtω=22222222222222()(1)coscos2224(1)cos2cos2()224cos2()cos(2)82cos(2)2AmmAutmAttAmmAttmAmAttmAtωωωωω=++Ω+Ω++++Ω+−Ω++Ω+−Ω……….(2.5)0.05-35Hz212222()coscos24mAAvtmAtt=Ω+Ω…………………….(2.6)m12.2.41986IEC1982UIE2.20.05-35Hz()ut()StstP()utltP()ut2.2IECFig2.2FlickermeasurementofIEC124--2390db0.05Hz35Hz[26]0.05Hz/()1/sHPssωω=+…………………………………….(2.7)120.05sωπ−=×35Hz231234561456()[1(/)(/)(/)(/)(/)(/)]ccccccBWsbsbsbsbsbsbsωωωωωω−=++++++………….(2.8)221152436235,3.864,7.4649.141,1csbbbbbbωπ−=×======UIE()Kf1222341/()2(1/)(1/)KssKsssssωωλωωω+=×++++…………….(2.9)123