基于DSP的电力参数综合测试仪研究

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1、西南交通大学硕士学位论文基于DSP的电力参数综合测试仪研究姓名：侯启方申请学位级别：硕士专业：检测技术与自动化装置指导教师：刘承志20070501西南交通大学硕士研究生学位论文第1I页AbstractItisverysignificantthataccurateandquickmeasurementoftheelectricpowerparameterforrealizingtheautomationofpowernetworkdispatchingandguaranteeingthesafeoperationofpowernetwork．Wit

2、hthedevelopmentofmodempowerelectronictechnology,nonlinearloadsareextensivelyappliedinproductionandlife．Theirnonlinearity,impactandimbalancemakepowerqualitywoPseandworse．Electricpowerparametersbecomeveryimportantforpeopletograsppowersupplylinestateandappraiseelectricquality．Me

3、asuringelectricpowerparametersbydigitalsignalprocessingtechnologyhassuperiorityinimprovingmeasurementprecisionandreal-timeperformance．Atthesametime，digitizationmeasurementmakesthemeasurementsystemmoreintelligent．First,thispaperintroducesthedevelopmentstatusandbackgroundofelec

4、tricpowerparameterstestinstrumentoverall．Thepaperexpoundsthemeasuringprincipleoffrequency,harmonic，voltage，cllrrentandotherelectricalparametersindetail．Inthispaper,amethodbasedoninterpolatedFFralgorithmispresentedtomeasurethepowersystemfrequency．Thenthesimulationmsu／tsarecomp

5、aredwiththemeasuringresultsofFourieralgorithm．AimingatthespectrumleakageandpicketfenceeffectofFFTalgorithminharmonicanalysis，thispaperexpoundsthecorrespondingresolventandadoptsthedoublespectrumlinesinterpolationalgorithmbasedonimprovedmThisalgorithmiscomparedwiththeFFralgorit

6、hmbysimulating．Thispaperadoptstheindirectmeasurementalgorithmforthereactivepowermeasurementthroughthecomparisonofsimulationresults．ThentheoveralldesignschemefortheelectricpowerparameterstestinstrumentbasedonDSPisintroduced．Theinstrumentconsistsoftwomainparts：dataacquisitionan

7、dprocessingsystem，datadisplayandstoragesystem．Thispapermostlycompletethehardwareandsoftwaredesignofthedataacquisitionandprocessingsystem．Thehm-dwarepartmostlyincludesADCcircuit，processorandperipheralcircuit，memoryexpandercircuit，logiccontrolcircuitandcommunicationcircuit．TMS3

8、20VC5502whichistheproductofTIisadoptedasthemainprocessor,Thesoftware