毕业设计毕业论文电气工程及其自动化外文翻译中英文对照

精品资料-1-山东理工大学毕业设计（外文翻译材料）学院：专业：学生姓名：指导教师：电气与电子工程学院电气工程及其自动化精品资料-2-RelayprotectiondevelopmentpresentsituationAbstract:Reviewedourcountryelectricalpowersystemrelayprotectiontechnologicaldevelopmentprocess,hasoutlinedthemicrocomputerrelayprotectiontechnologyachievement,proposethefuturerelayprotectiontechnologicaldevelopmenttendencywillbe:Computerizes,networked,protects,thecontrol,thesurvey,thedatacommunicationintegrationandtheartificialintellectualization.Keyword:relayprotection,presentsituationdevelopment,futuredevelopment1relayprotectiondevelopmentpresentsituationTheelectricalpowersystemrapiddevelopmenttotherelayprotectionproposeunceasinglythenewrequest,theelectronictechnology,computertechnologyandthecommunicationrapiddevelopmentunceasinglyhaspouredintothenewvigorfortherelayprotectiontechnologydevelopment,therefore,therelayprotectiontechnologyisadvantageous,hascompletedthedevelopment4historicalstageinmorethan40yearstime.Afterthefoundingofthenation,ourcountryrelayprotectiondiscipline,therelayprotectiondesign,therelaymanufactureindustryandtherelayprotectiontechnicalteamgrowsoutofnothing,haspassedthroughthepathinabout10yearswhichadvancedcountrieshalfcenturypassesthrough.The50's,ourcountryengineersandtechnicianscreativelyabsorption,thedigestion,havegraspedtheoverseasadvancedrelayprotectionequipmentperformanceandthemovementtechnology,completedtohavethedeeprelayprotectiontheoryattainmentsandtherichmovementexperiencerelayprotectiontechnicalteam,andgrewtheinstructionfunctiontothenationalrelayprotectiontechnicalteam'sestablishment.Therelayfactoryintroductionhasdigestedatthattimetheoverseasadvancedrelaymanufacturetechnology,hasestablishedourcountryrelaymanufacturingindustry.Thusourcountryhascompletedtherelayprotectionresearch,thedesign,themanufacture,themovementandtheteachingcompletesysteminthe60's.Thisisa精品资料-3-timewhichthemechanicalandelectricalrelayprotectionprospers,wasourcountriesrelayprotectiontechnologydevelopmenthaslaidthesolidfoundation.Fromtheendofthe50's,thetransistorrelayprotectionwasstartingtostudy.Inthe60'stothe80's，itisthetimeswhichthetransistorrelayprotectionvigorousdevelopmentandwidelyused.TianjinUniversityandtheNanjingelectricpowerautomationplantcooperationresearch500kVtransistordirectionhighfrequencyprotectionthetransistorhighfrequencyblocksystemwhichdevelopswiththeNanjingelectricpowerautomationresearchinstituteisawayfromtheprotection,movesontheGezhouDam500kVline,finishedthe500kVlineprotectiontodependuponcompletelyfromtheoverseasimporttime.Fromthe70's,startbasedontheintegrationoperationalamplifierintegratedcircuitprotectiontostudy.Hasformedthecompletelyseriestoattheendof80'sintegratedcircuitprotection,substitutesforthetransistorprotectiongradually.Thedevelopment,theproduction,theapplicationtheintegratedcircuitprotectswhichtothebeginningofthe90'sstillwereinthedominantposition,thiswastheintegratedcircuitprotectiontime.TheintegratedelectricityroadworkfrequencyconversionquantitydirectiondevelopswhichinthisaspectNanjingelectricpowerautomationresearchinstitutehighfrequencyprotectedthevitalrole,theTianjinUniversityandtheNanjingelectricpowerautomationplantcooperationdevelopmentintegratedcircuitphasevoltagecompensatedthetypedirectionhighfrequencyprotectionalsomovesinmulti-strip220kVandonthe500kVline.Ourcountrynamelystartedthecomputerrelayprotectionresearchfromtheendofthe70's,theinstitutionsofhigherlearningandthescientificresearchcourtyardinstituteforerunner'sfunction.HuazhongUniversityofScienceandTechnology,southeasttheuniversity,theNorthChinaelectricpowerinstitute,theXianJiaotongUniversity,theTianjinUniversity,ShanghaiJiaotongUniversity,theChongqingUniversityandtheNanjingelectricpowerautomationresearchinstituteoneafteranotherhasalldevelopedthedifferentprinciple,thedifferentpatternmicrocomputerprotectivedevice.In1984theoriginalNorthChinaelectricpowerinstitutedeveloped精品资料-4-thetransmissionlinemicrocomputerprotectivedevicefirstthroughtheevaluationandinthesystemthefindapplication,hadopenedinourcountryrelayprotectionhistorythenewpage,protectthepromotionforthemicrocomputertopavetheway.Inthehostequipmentprotectionaspect,thegeneratorwhichsoutheasttheuniversityandHuazhongUniversityofScienceandTechnologydeveloplosesmagnetismprotection,thegeneratorprotectionandthegenerator?Bankoftransformersprotectionalsooneafteranotherin1989、1994throughappraisalandinvestmentmovement.TheNanjingelectricpowerautomationresearchinstitutedevelopsmicrocomputerlineprotectivedevicealsoin1991throughappraisal.TheTianjinUniversityandtheNanjingelectricpowerautomationplantcooperationdevelopmentmicrocomputerphasevoltagecompensatedthetypedirectionhighfrequencyprotection,theXianJiaotongUniversityandtheXuchangRelayFactorycooperationdevelopmentpositivesequencebreakdowncomponentdirectionhighfrequencyprotectionalsooneafteranotherin1993,in1996throughtheappraisal.Here,thedifferentprinciple,thedifferenttypemicrocomputerlineandthehostequipmentprotectunique,providedonebatchofnewgenerationofperformancefortheelectricalpowersystemfine,thefunctionhasbeencomplete