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本科毕业设计（论文）中英文对照翻译院（系部）信息专业名称电气工程及其自动化学生姓名李翰成generallylargercapacityfiltercapacitance,thetransientover-voltageshockabsorptionofacertainextent,thestationLow-voltagetransformersidegotofeedbetweenthescreenusingashieldedcableandequipmenthaveagoodgrounding,theuseofmoderntechnologytoanalyzemine,wemustincreasethecircuit'ssegregationmeasures,becauseitsgrounding,protectionandotherelectricalgroundingallGroundingdevicesusingthesameequipment,andequipmentareinaLPZOB,therelativestrengthofstrongelectromagneticpulse,thestationchangedtopreventlow-pressuresidealthoughtherearelinesintrusivewavearrester,buttheresidualpressurehigh,inthesubstationoflightning,throughthelineCouplingandthepotentialrisecausedbyover-voltagecounterattackstillexist,andhigh-pressuresideoftheresidualpressureashighasseveralthousandvolts,itisnecessarytotheseschedulingautomationequipmentforthepowersupplyover-voltagecircuitprotection.LightningProtectioninaccordancewiththeprincipleofregionaldivision,substationequipmentinthesecondarypowersupplysystemover-voltagesensorslightningprotectionmaybetwo(B,Clevel)fortheprotectionofsegregation.B-mineuseisgenerallygreaterflowcapacityofthemineinstallations,theLightningcouldbemorecasualLiuxiepeople,toachievetheobjectiveofcurrentlimit,over-voltageatthesametimewillreducetoacertainextent,c-mineuseWithlowerresidualpressureofthemineinstallations,youcanloopintheremainingscatteredlightningLiuxiepeople,tolimitthepurposeofover-voltage,over-voltageequipmentcanbereducedtotheleveloftolerance.Themainpowersupplysystemisinhibitedlightningprotectionandoperationofthepowerbacktotheroadandover-voltagesurge.Accordingtothesubstationstatusofthesubstationofthesecondmine-sensingsystemandtheoperationanduseoftwoover-voltageprotection.Asbuildmoresubstationsintheregionmoreopen,relativelystrongelectromagneticstrength,powerlinesandcommunicationcablesareveryvulnerabletolightningattackssensors,sensorsalongtheover-voltagepowerlinesandcommunicationlinesintoonedevice,whichwilldamageequipment,Therefore,theexchangeoffirst-classbustoinstallthepowerprotection(Blevel)istoensurethesafetyoftheentirecontrolroom,and80percentoftheover-voltageChina,scatteredtotheearth,playaprimaryroleintheprotection,butarestillintheexchangeoffeederSomeoftheB-levelpowersupplyvoltageandminetheresidualpressureincreaseson-lineandmustthereforebeimportantintheexchangeoffeederlines(DCchargingscreen,UPS,etc.)c-levelpowerprotection,whichwouldcurbover-voltageelectricalequipmenttoback-endTotheleveloftolerance.Protectivelocation:Itis1EC1312(LEMPprotectionintheregionoflightningprotectionprinciples.Arresterinstallationshouldbeindifferentlocationsatthejunctionofprotectedareas,thisnetwork,thefirst-classprotectionshouldbelocatedinthebusexchange.InTwoonthebuswiththeinstallationofaB-classmodelsofathree-phasepowersupplyvoltagesurgeprotector.InstallLocation:ACbus(cabinet).3.2second-classprotectionmeasurestodealwithchargescreen,theinstallationofc-levelthree-phasepowerarrester.AsDCchargingscreenistwo-wayexchangeofelectricitysupply,sothescreenintheDCchargewiththeinstallationoftwomodelsofc-levelthree-phasepowersupplyover-voltagesurgeprotector.InstallationlocationshouldchoosetheDCchargescreenopenexchangeofairpower.3.3integratedautomationsystemover-voltageprotectionProtectiveposition:Computer-basedintegratedautomationsystem'sabilitytobearaverylowvoltage,severalhundredvoltsofover-voltageisenoughtodamagetheequipment,somustthehighsidearrestertheresidualpressure(thousandsofvolts)tofurthercurbtomeetequipmentInsulationlevelofneed,andbecauseofthepotentialrisetopowerandtheinductionloopisalsoover-voltagelineuponKV,tobeusedintheexchangeofintegratedautomationsystemtotheexchangeonthec-levelsingle-phaseinstallationofasurgeVoltageprotection.Locationshouldchoosetoinstallautomated-pingintheCompositeAirswitchtheACpower.3.4didnotaskoffpowersupplies(UPS)over-voltageprotectionProtectionhere:becauseoftheinternalcomputersystems,hubs,monitoringequipment,electricenergybillingsystemsandsoonthroughtheUPSpowersupplyprotection,inordertoprotectthesafetyofthesemicro-electronicsequipment,theUPSpowersupplydeviceinfrontoftheinstallationofac-SurgeVoltageprotection.Optionalmodels:The(UPSforsingle-phasepowerinput)C-classsingle-phasepowersurgeorover-voltageprotection(UPSforthethree-phasepowerinput)ofc-levelthree-phasepowersupplyover-voltagesurgeprotector.InstallationshouldchoosethelocationofUPSintothefrontline.3.5communicationinterfaceover-voltageprotectionCommunicationInterfaceover-voltageprotectioncomparedwiththegridsupplysystem,thisover-voltagecircuitonthedegreeofsensitivityismuchhigher,andtheseareover-voltageequipmentinthecircumstancesitisveryfragile.Equipmentinsulationtolerancelevelisverylow.Withtheequipmentconnectedtoasignalline,datalines,measurementandcontrollines,andthesearebasicallyinlineLPZOBregion,butalsothroughtheLVZOAregion,onthelinesofsensorsover-voltagerelativelystrong,accordingtotheIECtest,whentheelectromagneticfieldStrengthincreasedto0.07GS,willhaveamicro-computerequipmentmalfunction,lossofdata.Andthesafetyofthesecircuitsisdirectly