电气工程及自动化专业外文翻译--无人值班变电站与变电站自动化Word文档下载推荐.doc

电气工程及自动化专业外文翻译--无人值班变电站与变电站自动化Word文档下载推荐.doc

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BymeansofaSCADAsystem,anoperatoratadispatchcentercancauseoperationssuchastheopeningandclosingofbreakers,thestartingandstoppingofcondensers,andthechangingofthetapsontransformerswithloadtapchanger.Theoperatorcanreceiveanindicationthattheoperationhasbeencompleted.Allofthiscanbedoneoveravoice-gradecommunicationchannel.Itistheuseofvoice-grade,two-waycommunicationchannelsthatdistinguishessupervisorycontrolfromdirect-wireremotecontrol;

Thelatterrequiresonedirect-wirecircuitforeachcontrolfromdirect-wireremotecontrol;

Thelatterrequiresonedirect-wirecircuitforeachcontrolleddevice.SCADAequipmentsupplementsautomaticcontrol.Alloftheprotectiverelaysandmostofthecontrolrelaysrequiredforautomaticcontrolarealsonecessarywhensupervisorycontrolisused.Onlytheinitiatingdevicesmaybedifferentoromitted.Forexampleafullyautomaticsynchronouscondenserisstartedandstoppedbyaninitiatingdeviceresponsivetovoltageorcurrentorboth.Inaddition,therearemanyprotectiveandcontrolrelays.Ifthecondenseristobecontrolledbysupervisorycontrol,alltheotherdevicesarestillnecessary,andonlytheinitiatingdevicescanbeomitted.

Withtherecentrevolutioninmicroelectronicperformanceandcosts,digitalautomationsystemsarenowbeingdevelopedforpowersystems.Theseautomationsystemsprovideanintegratedsystemsconceptforprotection,control,andmonitoringfunctions.Theapproachutilizesdistributedmicroprocessor-basedmoduleslocatedwithinthesubstationsandortonthetransmissionanddistributionsystem.Thisprovidesprotectionandcontroldecisionsoutonthesystemwherethedataislocated.Byautomatictransmissionanddistributionsystems,majorbenefitswillbeobtained.Thereincludegreaterutilizationofexistingfacilities,reductionofcommunicationrequirements,deferralofmajorsysteminvestments,optimizedoperationsandmaintenance,improvedsystemreliability,moreefficient-systemoperationthroughlowerlossesandrapidrestorationofserviceafterafaultthefunctionsimplementedbyusingthisintegratedsystemsapproachinclude:

Transmissionautomationfunctionsanddistributionsubstationandfeederautomationfunctions.

Thetransformersubstationautomationandunmannedondutyarethepopulartopicsthatthechargedbarbedwirenetadjustsonedegreeautomationrealmnowadays,itsdevelopmentpowerheadisjustontheup.Theabroadhasakindofstandpointtothink,thepersonissubjectedtoenvironment,motion,personality,disease...etc.manyfactorinfluenceeasily,sooneselfbeanotdependablefactor.Reallytherearen'

tafewtroublestobeingcausebytheartificialmistakeoperationof,seeingfromthisangle,nomantheondutyreallycanraisetocirculatecredibility.ForexampleZHENG4ZHOUDI4adjustasearlyas1959tostartadopttheremotecontroltechnique,morethan30inthelastyearsesesnevertakeplaceamistakeoperation;

AgainifafterpowersupplybureauinShenzhencarryoutatransformersubstationnomanonduty,mistakeoperationthetroubleratelowered60%.

Thetransformersubstationautomationisatthecalculatortechniqueandthenetworkcorrespondencetechnicalfoundationupdevelop.Theabroadhasalreadyhadthedispersiontypetransformersubstationautomationtopublishin80'

s,takingSiemens（SIEMENS）companyasanexample,thatcompanythe1stwholedispersiontypetransformersubstationautomationLSA678asearlyas1985circulatesintheGermanHanoverdevotion,thetransformersubstationthatgotovariouselectricvoltagegradethat1993beginningofyearshavealreadyhadmorethan300systemsinGermanyandEuropecirculate.Thetransformersubstationautomationtheworkstartoftheourcountrytocomparewithnight,,aboutsince90'

s,thebeginningstartthestagemainlydevelopswithproduceaconcentrationtypeoftransformersubstationautomation,exampletypeDISA-1the［isone］,typeBJ-1the［is2］s,typesiES-60ses,AXWJK-1000types,etc.sFD-97.Startdevelopdispersionthetypetransformersubstationautomationinmid90'

s,suchasthetypesDISA-2s,typeDISA-3［3,4］s,BJ-F3s,typeCSC-2000the［is5］s,DCAP3200typeseses,FDKtypeetc.,comparedwiththeforeignadvancedlevelhaveamarginaboutfor10years.Manyhighschool,researchunits,themanufactoryhouseandprogrammingdesign,thesetingupwithcirculatesectionatstudyanddrawlessonsfromabroadforerunnertechnicalofinthemeantime,iscombinetheactualcircumstancejointeffortoftheourcountrytocontinuetodeveloptomatchmoreourcountrythetransformersubstationautomation［ofthestateofthenation3,4,6-12］s.Cananticipate,itwilldevelopmentandexpansionfromnowonofspeedwouldmoreandmorequick,withabroadofthemarginwillcontractgradually.

One,thetransformersubstationcategorize:

Transformersubstation'

spresstheelectricvoltagegradecanisdividedintothehighpressure,extrahighvoltage,highpressureandmediumlowpressureespeciallyis4.Especiallyhighpressuretransformersubstation:

1000KV,750kVs;

Extrahighvoltagetransformersubstation:

500KV,330kVs;

Highpressuretransformersubstation:

220KV,110kVs,35kVs;

Mediumlow-pressuretransformersubstation:

（calltogotogetherwiththeelectricitystationagain）10ThekVandfollowingelectricvoltagegrade.

Thetransformersubstationpressesinthepositioninthechargedbarbedwirenetcanisdividedintothevitalpointstation,theterminalstationwithtoturn3ofstand.Thevitalpointstand:

Inthechargedbarbedwirenetregardlessisthenet,astructurestillaburdenlevelsallareplacedinprominentposition;

Theterminalstand:

Onlythehighpressureentersline,locatingthecircuitbitterendofthechargedbarbedwirenet;

Wintoturnastation:

Thereare2roadhighpressurestoenterline,locatethecircuitmiddle.

Transformersubstation'

spressthecontrolmethodcanisdividedintogathertocontrolastation（againcallabaseastation）andbecontroledastation.（callsonastationagain）Theformerisadjustedonedegreecentercontrol,andastoit'

sthesurroundingssonstationtaketohavealreadyadjustedonedegreeoperationmission;

Thelatterandtheterminalstationaresimilar,butbeplacedinthewreathformchargedbarbedwirenetprobablyin

Two,BEgathertocontrolthestationcontrol:

Thetransformersubstationpressestocirculatemodedemarcationtoturnondutyforsomeone:

Thisisthemostfamiliarmovementmodecurrently;

Unmannedonduty:

Havenofixedmovementondutyapersonnel,reserveonlyindividualguardpersonnel,beresponsibleforstationinsideofsafesecurityworkandthetroubleabnormalitycircumstanceofurgentprocessing;

Nomanvalueguard:

Nomanoftherealmeaningstation,atsomeflourishingwestnation,iftheUnitedStates,Canadianetc.ismorefamiliar.

Three,concentratetogotogetherwithtohol