电能质量监测的数据采集系统

:2010-08:(1969),,,麦伟辉(广东电网公司江门开平供电局,广东江门529100):电能质量监测技术是目前电力系统领域的研究热点,电能质量监测的难点是对突变的暂态的非平稳电能质量扰动的检测文章介绍了一种以数字信号处理器TMS320VC5402为核心的数据采集分析系统,通过在该平台的DSP上运行扰动分析算法,提取电网节点的扰动情况并记录特征信息文章主要叙述了数据采集分析系统的硬件设计,该方案具有采样率高实时性好和良好性价比的优点:电能质量;数字信号处理器;暂态扰动:TM933.4:B:1006-2394(2010)10-0004-04TheDataAcquisitionSystemofPowerQualityMAIWeihui(JiangmenKaipingPowerSupplyBureauGuangdongPowerGrid,Jiangmen529100,China)Abstract:Powerqualitymonitoringtechniquehasbeenwidelyresearchedinmodernpowersystem.Itisdifficultthatthetransientandnonsteadystatedisturbanceisdetected.Adataacquisition&analysissystemisIntroducedbasedondigitalsignalprocessor(DSP)TMS320VC5402.AnEfficientAlgorithmisusedbythesystem,whichcandistinguishandrecordthevariousinformationofdisturbance.Thispaperillustrateshowtodesignthehardwareplatform.Theresultsofpracticaloperationshowthatthesystemhasmanyadvantages,suchasgoodrealtimeindicator,pricequality,andhigher.Rates.Keywords:powerquality;DSP;transientdisturbance0,;,,,,,,(FFT)2001!(),-,,,11.11,(CT)(PT),A/D(FIFO),DSPFIFOA/DFIFO∀4∀201010DSPA/DFIFOCPLDDSP,(HPI),;,,图1系统框图1.2TI16ADS8364,250kHz,ADS8364,80dB,0~5V,+5V,REFOUT+2.5V-2.5V~+2.5V,ADS83642,R12k,R210k,REFINREFOUT图2ADS8364的前端放大电路ADS83641(A,B,C),(HOLDA,HOLDB,HOLDC)A0~A2ADS8364,FIFOADDBYTE,8CLKA/D,BYTE,CS,WR,16FIFO,CPLD,,16,,1ADS8364BYTEEOCA/DCLKRDWRCSDB15~DB016RESETADS8364ADDA2~A0HOLDAAHOLDBBHOLDCCHOLDX20ns,,,EOC,RD1.3FIFOCPLDFIFO,FIFO,FIFOIDTIDT72V04,TIDSP,,:(1)+3.3V,;(2)4K#9Bit;(3)12ns;(4);(5);(6)∃%IDT72V04D0~D8Q0~Q8,:FL/RT,,;,,CPLD,DSPRS,∀5∀201010CPLD,DSPEF,XO/HF,FF∃%,∃%,∃%,XO/HF∃%DSPW,R,EF,,;FF,3IDT72V04ADS8364DSPCPLDADB0~ADB15ADS836416,DB0~DB15DSP16CPLD图3IDT72V04连接图CPLDADS8364IDT72V04DSP(TMS320VC5402)DSPCPLD,CPLDADS8364CPLD,,HOLDA,HOLDB,HOLDC20ns,ADS8364;,ADS8364EOC,CPLDEOC,ADS8364IDT72V04,ADS8364IDT72V04FIFO,A0A1B0B1C0C11.4DSPTMS320VC5402,TI,,,100MHz,RAM16KB,ROM4KB,21(HPI),4DSP,,HPIHPIDSP,,DSP,DSPHPIDSP,TMS320VC54028HPI,DSPHPI818,8(HD0~HD7),22HPIHASHBILHCNTL0/1HPIHD0~HD7HCS1HDS1HDS2HINTHRDYHR/WHASMCU,ALE,HBILHCNTL0/1HR/W;MCU,HBIL,HCNTL0/1:HPIAHPIDHPICHBILHCNTL0/1,3∀6∀2010103HPIHCNTL1HCNTL000HPIC01HPID,HPIA10HPIA11HPID,HPIAHDS1,HDS2DSPHDS1,HDS2,,,HINTDSP,HRDY,HRDY1HPI,HRDY0HPI,HR/WHPIHR/W,HPI:HPI,;HPIDSPRAM,DSPDMA,,HRDY:(1)HRDY,,DSP,(2),HCNTL0/1HBILHR/W,(3),(HPIA)HPIA,HPIA,DMAHPID,HPIDHPIA,HPIA1,,451HPIDSP,74LVC245Y0,HPIHRDYHINT,I/O图4HPI与51单片机接口2,,:[1],.[J].,2004,11(4):3.[2],,.[J].,2004,28(20):1-10.[3],,.ADS8364[J].,2002,1(10):1-10.[4],.FIFODSPADC[J].,2004(10):25-28.[5],,.TMS320C54XDSPHPI[J].,2005,16(2):1-20.()(3)[2],.FuzzyPID[J].,2003,35(1):17-18.[3],.[M].:,1993.[4]..[M].:,2003.[5],.PROTUES[M].:,2007.()∀7∀201010