双电源自动转换开关的设计

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1、双电源自动转换开关的设计双电源自动转换开关的设计胡剑挺(自动化与电气工程学院指导教师：项新建)摘要：随着经济的不断发展，电力质量日益受到人们的重视,供电的连续性是电力质量的重要内容。一些关键的场所如医院、炼钢厂、消防设施，都需要两路电源供电，来保持供电的连续性。针对不间断供电的需求，基于采样、比较的工作原理。对两路三相供电电压的采样，人机接口设计和电源的切换部分等硬件组成进行了详细的设计。采用结构化、模块化编程方法，用KeilC编程了采样、人机接口、自动转换等软件，实现了对电源状况的判断和双电源

2、的自动切换。当工作电源发生过压、欠压和缺相等故障时，双电源自动转换开关完成主、备电源间转换，以保持供电的连续性。该系统具有可编程、自动化测量、LCD显示、数字通讯等功能，集数字化、智能化、网络化于一身，是双电源转换的理想产品。关键词：双电；自动转换；智能控制Abstract：Withthedevelopmentofeconomics,themountofpowerusedbyenterpriseshasexceededgreatlythemountpowersystemcansupply.Itr

3、esultedinfrequentlypowercutandthedemandforpowerqualityandsafetyismoreandmorehigh.Therearesomanyimportantgroundssuchashospitals,steel-makers,fire-controllerfacilitieswhichrequiretwopowersourcestorealizedurativeofpowersupply.Tomeetthedemandforuninterru

4、ptedpowersupply，thedevelopingschemeofintelligentautomaticswitching-overdoublepowersupplysystemcontrollerusingP87C591controllerasmaincontrolchipwasintroduced.Thesystemincludesthevoltagesampling,thepowersourcescontrol,theman-machineinterface.Itisimplem

5、entedwiththestructureandthemodularprogrammingmethod,programmedwithKeilC.Inpowerserviceequipment，basedontheworkingprincipleofsampling,comparing,runningsoftwareontheP87C591controller,themicro-controllerdetectthepowersupplystateandprocesscorrespondingco

6、ntrol.Iffaultssuchasovervoltage,undevoltage，phaselossetc,wasfoundinthenormalpower,thestandbypowerwouldswitchbytheautomatictransferswitchcontroller.Theswitchingbetweentwo-waypowerswasreliablyfinishedautomaticallytoensurethecontinuityofpowersupply.Itis

7、onekinddoublepowersourcemodulewhichhaveprogrammablefunction,theautomationmeasures,LCDdisplay,thenumericalcommunication.Itintegratesdigitization,intellectualized,network-rization,whichleadstoautomaticmeasurementandcontrolprocess,andreducesanartificial

8、operationerror.Itisidealproductwhichthedoublepowersource27双电源自动转换开关的设计transforms.Keywords：doublepowersupply；automaticswitching-over；intelligentcontrol1绪论依据国家规范GB50052-95《供配电系统设计规范》的要求：对于一些较重要的一、二级负荷，应采用双电源供电。特别在电梯、消防、地铁、医院、宾馆、邮电通讯、电视台、工业流水线。船舶及其他紧急用电