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1、附 录附录A 外文资料Substationsystemover-voltageprotectiontechnologySecondsubstationequipmentover-voltageprotectiononelectronicinformationsystemfortheprotectionofcoreequipmentfortheconstructionofaprotectedbothpressureandotherpotentialsystem,andthroughalllevelsofover-voltagesurgeprotectorsof
2、thecurrentstepbystepintothelandofChina,Substationsecondarysafetyequipmentandreliableoperation.1secondover-voltagesubstationprotectionInrecentyears,thesubstationcommunications,communicationssystems,protectionsystems,backgroundmanagementmodulefrequentover-voltagedamage,themainreasonf
3、orthisisweakanditsrelatedsystemsproductsover-voltageprotectionlevelisweak,ornoguardagainstover-voltageTechnicalmeasures,theconsequencesforthesafeoperationofpowergridsbringaboutagreaternegativeimpact.Withintegratedautomationsystemsandautomationsystemssuchascommunicationsystemsinthes
4、ubstationweaksecondarybythewideruseofsuchelectronicsystems(equipment)componentsoftheintegratedmoreandmore,thegrowingvolumeofinformationstorage,speedandaccuracyoftheIncreasedandoperatesonlyafewvolts,currentinformationonlymicroamplevel,thusextremelysensitivetooutsideinterference,espe
5、ciallythelightningandelectromagneticpulse,suchasover-voltagetoleranceislow.Whenthunderandlightning,suchasover-voltageandaccompaniedbytheelectromagneticfieldsreachacertainthreshold,rangingfromsystemfailurecaused,resultedinheavyequipmentorpermanentdamagetoitscomponents.Despitethethun
6、derandlightningviewpointofelectronicsystems(equipment)isunlikely,butlightningstrikeneartheland,buildings,communicationandairsupplylinedirectlyLeiyundischargeform,orbecauseofelectrostaticinductionandtheimpactofelectromagneticinductionformationofover-voltage,Theremightbeconnectedtoth
7、epowerlines,signallinesorgroundingsystem,throughvariousinterfacestotransfer,coupling,radiationandotherformsofinvasiveelectronicsystem(equipment)andleadtoseriousdisturbancesorincidents.Therefore,strengtheningandimprovingtheelectronicsystem(equipment)protection,tominimizetheimpactofi
8、nterferencebylightningando
