监控与数据采集系统电力系统专业英语PPT课件.ppt

.,1,SupervisorycontrolandDataAcquisitionSystem,监控与数据采集系统,LessonEight,.,2,vocabulary,supervisoryscanself-checkalarmover-temperaturechange-of-statetelemeterreferenceanalogquantitypulse,监视扫描自检报警过热状态改变、变位遥信基准模拟量脉冲,.,3,vocabulary,sequence-of-event(SOE)codeloggingmodulatordemodulatorpanelmimic,事件顺序记录代码记录调制器解调器面板模仿的,.,4,(1)Conditionsalarming,suchasfirealarm,illegalentry,over-temperature,lowbatteryvoltageandindicationalarmofanyuncommandedchange-of-state.(2)Controlandindicationincluding:a.Controlof,andindicationfromadevicehavingonlytwoposition.Examplesarecircuitbreakers(trippedorclosed)andmotorstarters(stoppedorstarted).b.Controlof,andindicationfromadevicehavingthreepositions.Anexampleisavalve(closed,midpositionandopen).c.Indicationwithoutcontrolofadevicehavingtwoorthreepositions.,SentenceExplanations,.,5,d.Indicationswithmemorycapableofstoringsingleormultiplechangesofstatusthatoccurbetweenscans.e.Controlwithoutindicationofadevice.Examplesaretap-changingtransformers(tappositionisbroughttothemasterbytelemeteringmeans)andraise-lowercontrolofgeneratorload.f.Set-pointcontroltoprovideaset-pointreferencetoacontrollerlocatedataremote.(3)Dataacquisitionincludingrecordingordisplaying:a.Analogquantities.ExamplesareACwatts,vars,voltsandamperes.b.Kilowatt-hourdatafromdigitalpulses.c.DigitaldatasuchaslevelsthataredigitalizedbyexternaldevicesandreaddigitallybytheSCADAequipment.,.,6,(4)Sequence-of-eventsthatrecognizetheoccurrenceofpredefinedevents,associatedtimeofoccurrencewitheachevent,andpresentationoftheeventdataintheorderofoccurrenceoftheevents.,(4)事件顺序记录，它记录预定义的事件及其发生的时间，并且按照事件发生的顺序显示事件数据。,.,7,Thisinformationcanbecommandstoremotelocations(trip-close,position,setpoints,etc.)oritcanbethetransmissionofstatusindication,positionandanalogordigitaldatafromtheremotetothemasterstation.,这种信息可以是对远方设备的操作命令（断/合，位置设定，整定命令等等）或是从远方到主站的状态监测，位置信号、模拟量或数字量。,.,8,Thecommunicationsinput/outputfunctionishandledbyseveralmicrocomputerscapableofoperatingwithanumberofcommunicationlines.,几个可以处理多路信道的微机实现通信的输入输出功能。,1、capableof修饰microcomputers2、被动译为主动,.,9,Conventionalmasterstationman-machineinterfacesystemsconsistofstandardpanelswithmimicbus,indicatinglights,controlswitches,alarmpanelsandindicatingmeters.,模拟盘模拟母线指示灯控制开关光字牌监测仪表,.,10,.,11,.,12,TheCRTprovidesaone-linediagramthatdynamicallydisplaysthestatusofthesubstationandalsoalphanumericdisplays;thissavesspaceandwiring.Thekeyboardandspecial-functionpushbuttonsareusedbytheoperatorforthedisplayfunction,dataandeventslogging,limitviolationandotheroperatoractions.Loggingbytheprinterprovidesapermanenthard-copyrecordofallthingsthathaveoccurredataremote.,CRT提供单线图可以动态显示变电站的状态和数字显示，这节省了空间和电缆。运行人员使用键盘和特殊功能的按钮进行显示，数据和事件记录，越限记录和其他操作。打印日志提供在远方发生的所有事件的永久的硬拷贝记录。,.,13,.,14,Operatorscontrolallowsthefollowingfunctionstobeinitiated:controlaction,CRTdisplayselection,alarmacknowledgement,dataentry,demandlogging,limitchangesandpointsINorOUTofserviceinthesubstation.Meansforprintanddisplay,dataentry,controlpointselectionandalarmfunctionsarealsoprovided.,运行人员控制允许执行以下功能：控制操作，CRT显示画面选择，报警确认，数据录入，命令日志，改变限值和变电站测点投用/停用。SCADA系统也提供显示和打印，数据录入、控制点选择和报警功能。,.,15,TranslationSkill,被动句的翻译1、译为被动句为保持译文的准确性，通常可保留被动语气。常用“被、由、为、受、靠”等词表示。Thekeyboardandspecial-functionpushbuttonsareusedbytheoperatorforthedisplayfunction。键盘和特殊功能的按钮被操作员用于显示。,.,16,TranslationSkill,被动句的翻译2、译为汉语主动句某些情况下，用被动翻译译句语序不好处理，可译为主动句，即采用反译法。Thecommunicationsinput/outputfunctionishandledbyseveralmicrocomputerscapableofoperatingwithanumberofcommunicationlines.几个可以处理多路信道的微机实现通信的输入输出功能。因为“微机”的定语很长，若保持被动语气，主语和宾语距离太远，句子结构不紧凑。,.,17,TranslationSkill,被动句的翻译3、译为无主句对itedthat结构，可以译为无主句Itmustberealizedth