數(shù)字變壓器保護(hù)測(cè)控裝置的研制.pdf

1、西安工程大學(xué)碩士學(xué)位論文數(shù)字變壓器保護(hù)測(cè)控裝置的研制姓名：李培華申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：劉曙光20070310DesignofProtectionDevicefortheDigitalTransformerAbstractPowertransformersareimportantfacilitiesinpowersystemTheyareusedinelectricitygeneratingtransmittin

2、gdistributionandothertachesofpowersystemTheirsafetyrunningdeterminesweatherthewholepowersystemcanoperatesteadilyandcontinuouslySohighperformanceandsecurerelayprotectionsetsareneededforpowerWansformersWiththedevelopmentof

3、technologyforsubstationautomationthetraditionaltransformerrelayingcan’tsatisfytherequestbecauseofthesimpleprotectingfunctionEspeciallymicrocomputerrelayprotectionsetswitllSOfbvare$agitityfindawideapplicationinprotectiono

4、fpowertransformersBasedontheanalysisofthedevelopmentoftheprotectionrelaysandreferredtothedomesticandforeignproducts，aprotectiondeviceforthedigitaltransformerhasbeendeveloped；thisproductintegratesprotectionmeasurement，con

5、trolandeommunicatiOllfunctionsThetheoryofprotectionfunctionsandthealgorithmofdataprocessingusedintherelayareintroducedandthentheoryandimplementationofFourierTransformisdiscussedTllisthesisemphasizesonthehardwareandsoRwar

6、edesignInthehardwarepart，adigitalsignalprocessingchip∞SP)TMS320LF2812isusedtosatisfytherequestofreal—timeprocessingforfaultsofpowertransformerAnEthernetcommunicationandRS485serialcommunicationaresuppliedforpowersystemcom

7、municationProgrammablelogicdevicesarealsousedforsimplifyingtheperipherycircuit’designofCPUTheoverallstructureofprotectionrelayisdescribedfirstlyThen，thecharacteristicsofthedigitalsignalprocessorisanalyzedfollowedtheindiv

8、idualmoduledescriptionssuchasswitchinmodule，switchoutmodulecommuaicationmodule，datasteragemoduleandhumanmachineinterfacemoduleModularizationdesignisusedtodevelopthesoftwarewhichmakesiteasyforthemodificationandextensionof

9、thesoRwareThecurrentrealtimeoperatingsystem(RTOS、isalsoanalyzedWitlltheagilityofsoftwarethesetispreparedwithovercurrentdifferentialprotection，secondharmonicrestraintdifferentialprotectionoverloadprotectionandselfcheckfun