简介:摘要:DCS系统的可靠接地,是保证石油化工公司DCS安全、可靠运行的首要条件。本人根据对中石油哈尔滨石化公司的一些系统设计、现场经验,对DCS系统的接地,进行了探讨和简要介绍。
简介:以和利时公司的SmartPro系统为依托,针对职业实践教学要求设计出接近生产实际的DCS系统仿真方案,其包含电厂控制系统仿真和SmartPro系统组态两部分。DCS系统仿真的训练极大地提高了学生的动手能力和工程实践能力,对其他类似实践教学设计有一定的指导意义。
简介:WithintheATLASexperimentTrigger/DAQandDCSarebothlogicallyandphysicallyseparated.Neverthelessthereisaneedtocommunicate.TheinitialproblemdefinitionandanalysissuggestedthreesubsystemstheTrigger/DAQDCSCommunication(DDC)projectshouldsupporttheabilityto:1.exchangedatabetweenTrigger/DAQandDCS;2.sendalarmmessagesfromDCStoTrigger/DAQ;3.issuecommandstoDCSfromTrigger/DAQ.Eachsubsystemisdevelopedandimplementedindependentlyusingacommonsoftwareinfrastructure.AmongthevarioussubsystemsoftheATLASTrigger/DAQtheOnlineisresponsibleforthecontrolandconfiguration.Itistheglueconnectingthedifferentsystemssuchasdataflow.level1andhigh-leveltriggers.TheDDCusesthevariousOnlinecomponentsasaninterfacepointontheTrigger/DAQsidewiththePVSSIISCADAsystemontheDCSsideandaddressesissuessuchaspartitioning,timestamps,eventnumbers,hierarchy,authorizationandsecurity,PVSSIIisacommercialproductchosenbyCERNtobetheSCADAsystemforallLHCexperiments,ItsAPIprovidesfullaccesstoitsdatabase,whichissufficienttoimplementthe3subsystemsoftheDDCsoftware,TheDDCprojectadoptedtheOnlineSoftwareProcess,whichrecommendsabasicsoftwarelife-cycle:problemstatement,analysis,design,implementationandtesting.Eachphaseresultsinacorrespondingdocumentorinthecaseoftheimplementationandtesting,apieceofcode,InspectionandreviewtakeamajorroleintheOnlinesoftwareprocess,TheDDCdocumentshavebeeninspectedtodetectflawsandresultedinaimprovedquality.AfirstprototypeoftheDDCisreadyandforeseentobeusedatthetest-beamduringsummer2001.
简介:摘要:在工业控制系统中,报警对生产的安全运行非常重要。但随之而来的报警泛滥、无效报警等问题也困扰着操作人员和管理人员。本文探讨了基于和利时DCS系统的转动设备报警优化的方法,方案实施后效果良好,可为报警优化工作提供参考和借鉴。
简介:摘 要 :本文介绍了某炼油厂区重整加氢装置通过DCS国产化改造解决了老旧控制系统设备老化、故障率上升、备件停产、不满足新规范要求等问题,大大提升了控制系统的本质安全水平。