变电站系统过电压防护技术中英文翻译.docx

变电站系统过电压防护技术中英文翻译.docx

《变电站系统过电压防护技术中英文翻译.docx》由会员分享，可在线阅读，更多相关《变电站系统过电压防护技术中英文翻译.docx（8页珍藏版）》请在冰豆网上搜索。

变电站系统过电压防护技术中英文翻译

英文文献

Substationsystemover-voltageprotectiontechnology

Secondsubstationequipmentover-voltageprotectiononelectronicinformationsystemfortheprotectionofcoreequipmentfortheconstructionofaprotectedbothpressureandotherpotentialsystem,andthroughalllevelsofover-voltagesurgeprotectorsofthecurrentstepbystepintothelandofChina,Substationsecondarysafetyequipmentandreliableoperation.

1secondover-voltagesubstationprotection

Inrecentyears,thesubstationcommunications,communicationssystems,protectionsystems,backgroundmanagementmodulefrequentover-voltagedamage,themainreasonforthisisweakanditsrelatedsystemsproductsover-voltageprotectionlevelisweak,ornoguardagainstover-voltageTechnicalmeasures,theconsequencesforthesafeoperationofpowergridsbringaboutagreaternegativeimpact.Withintegratedautomationsystemsandautomationsystemssuchascommunicationsystemsinthesubstationweaksecondarybythewideruseofsuchelectronicsystems（equipment）componentsoftheintegratedmoreandmore,thegrowingvolumeofinformationstorage,speedandaccuracyoftheIncreasedandoperatesonlyafewvolts,currentinformationonlymicroamplevel,thusextremelysensitivetooutsideinterference,especiallythelightningandelectromagneticpulse,suchasover-voltagetoleranceislow.Whenthunderandlightning,suchasover-voltageandaccompaniedbytheelectromagneticfieldsreachacertainthreshold,rangingfromsystemfailurecaused,resultedinheavyequipmentorpermanentdamagetoitscomponents.Despitethethunderandlightningviewpointofelectronicsystems（equipment）isunlikely,butlightningstrikeneartheland,buildings,communicationandairsupplylinedirectlyLeiyundischargeform,orbecauseofelectrostaticinductionandtheimpactofelectromagneticinductionformationofover-voltage,Theremightbeconnectedtothepowerlines,signallinesorgroundingsystem,throughvariousinterfacestotransfer,coupling,radiationandotherformsofinvasiveelectronicsystem（equipment）andleadtoseriousdisturbancesorincidents.Therefore,strengtheningandimprovingtheelectronicsystem（equipment）protection,tominimizetheimpactofinterferencebylightningandotherdamagecauseddirectlossesandindirectlosses,hasbecometheurgentneedtosolvetheproblem.

2over-voltageprotectiondesign

IEC（InternationalElectrotechnicalCommission）TC/81minetechnicalcommitteewillbedividedintointernalandexternalminemineintwoparts,theexternalmineislightningrod（orwithlightning,lightningnetwork）,YinXiaxianandgroundingsystem,Objectstobeprotectedfromdirectlightningstrikes,mineistopreventinternallightningandotherinternalover-voltagedamagecausedbyinvasiveequipment.Acomprehensivemineandover-voltageprotectionsystemsmustbeintegrateduseofdischarge（segregation）,bothpressure（andotherpotential）,shielding（isolation）,grounded,limitpressure（clamp）protection,andothertechnology,inaccordancewiththeexternalmineAndtheprincipleofinternalmine,inaccordancewiththetargetsofprotectivefeatures,flexibleapplicationtotakeconcretemeasures,constituteacompleteprotectionsystem.Over-voltagesubstationintheformare:

Lightningover-voltage,theresonantfrequencyover-voltageandover-voltage,over-voltageoperation,theseover-voltagetransmissionorelectromagneticinductiontothewaythelinesandequipmentonadangerousover-voltage,inparticular,Lightningover-voltage,lightningsubstation,inthelow-voltagepowersupplysystemandweaksystemtoproduceastrongover-voltagesensor,whilethesubstationtopotentialrise（forexample:

thesubstationgroundingresistanceto1Q,lightningcurrent10kA,whilethepotentialfor10kV）,duetotheincreasedpotentialofthecounterlinesandequipmentdamagedlinesandequipmentandtheeventshaveoccurred,therefore,despitethesubstationoutsidetheminesystem（lightningrod.YinXiaxianAndgroundingdevices）inlinewithnationalstandardsandtherequirementsofBuban,andtheintegratedautomationandcommunicationsautomationsystems,suchasweaksecondaryhavebeentaken,suchasshielding,grounding,isolation,filtering,andothermeasures,butitcannotcompletelyavoidover-voltagepowerfullightningandvoltageofthesystemcounterthedisruptioncauseddamageand,therefore,thesecondweaksystemsubstationandamine-voltagemustalsotaketheappropriateprotectivemeasures,inaccordancewiththeIECwithinthemineareaEMP,thedevice'spowercord,signalLines,datalines,andtheinstallationoflightningprotectionandinternalover-voltagedevicestopreventlightningsensors,channelingpeoplealongthelightningcurrent,voltagecounterattack,suchastransientvoltagesurgetootransientover-voltagecausedbyafaultanddamagedelectronicequipment.Over-voltagesurgeprotectioninaccordancewithitsconnectionmodeisdividedintotwoseriesandparallel,theuseofover-voltagesurgeprotectiontandemwith,theremayexistbecauseofsignaltransmissiondoesnotmatchthecausesoftransmissionofthesignalinterference,inparticulardataCommunicationInterfaceintheserieswereover-voltagesurgeprotectioninplace,willhavethenormaldatacommunications.Therefore,thedatacommunicationsaccessI:

Iintheserieswereover-voltagesurgeprotectioninplace,thetransmissionofdatamustbecarriedoutconscientiouslycheckifthedataarenotnormaltransmission,itmaybeduetothereasonsdonotmatchthetransmissionsignalInterference,shouldbereplacedtomatchtheover-voltagesurgeprotectionfor.Iftheuseofover-voltagesurgeprotectionforuseofparallel,thesituationisbasicallynon-existent,buttheconnectionmodeofover-voltagesurgeprotectionforhighertechnicalrequirements.

3secondarysystemover-voltagesubstationprotection

 3.1pointsover-voltageelectricitysystemprotection

 SubstationinstalledinthecommunicationsdispatchautomationsystemsareusedACpoweroraDCpowersupplyequipmentfortherectificationofitslinksaregenerallylargercapacityfiltercapacitance,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（LEMPprotection"intheregionoflightningprotectionprinciples.Arresterinstallationshouldbeindifferentlocationsatthejunctionofprotectedareas,thisnetwork,thefirst-classprotectionshouldbelocatedinthebusexchange.InTwoonthebuswiththeinstallationofaB-classmodelsofathree-phasepowersupplyvoltagesurgeprotector.

 InstallLocation:

ACbus（cabinet）.

 3.1.2second-classprotectionmeasurestodealwith

 Forthemoreimportantfeederlinesontheexchangeofequipment,herefortheDCchargescreen,theinstallationofc-levelthree-phasepowerarrester.AsDCchargingscreenistwo-wayexchangeofelectricitysupply,sothescreenintheDCchargewiththeinstallationoftwomodelsofc-levelthree-phasepowersupplyover-voltagesurgeprotector.Installation