会员注册 | 登录 | 微信快捷登录 支付宝快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

   首页 人人文库网 > 资源分类 > DOC文档下载

外文翻译--PLC 控制器在风电机组中的应用.doc

  • 资源星级:
  • 资源大小:35.00KB   全文页数:5页
  • 资源格式: DOC        下载权限:注册会员/VIP会员
您还没有登陆,请先登录。登陆后即可下载此文档。
  合作网站登录: 微信快捷登录 支付宝快捷登录   QQ登录   微博登录
友情提示
2:本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3:本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

外文翻译--PLC 控制器在风电机组中的应用.doc

PLCControllerofWindTurbine1IntroductionWindenergyasaninexhaustible,cleanandpollutionfreerenewableenergy,itsexploitationhasbeenwidespreadattentionaroundtheworld,asoneofthewindresourcerichcountries,thelevelofChinaswindpowerhasmadetherapiddevelopment.Fromthe20thcentury70s,andnetworkbasedwindpowerhasbeengraduallybegantocommercializetechnologiesbecomemoresophisticated,increasingunitcapacity,whilethestallinductionwindturbinewindfarmhasbecomethemainmodel.Asthemainformofcollectingwindenergy,windturbinecontrolproblemofgrowingimportance.Atpresent,runonwindturbinecontrol,PLCcontrolhasbeenwidelyusedathomeandabroad.Inrecentyears,PLCwithitsmanyfeatureswidelyusedinadvancedindustrialcountrieshavebecomethestandardindustrialcontrolequipment.Itisdesignedspecificallyforindustrialcontrol,setelectrical,instrumentation,controlthreeinoneistoachieveanidealcontrolofmechatronicsequipment.PLCcanbeprogrammedusingthememory,inadditiontotheimplementationoflogicaloperations,orderofoperations,timing,countingandarithmeticoperationssuchasinstruction,butalsotocompletetheorderortimingofvariousclosedloopcontrolfunctions.Throughvariouscommunicationinterfacesandmoduleprocessing,todigitaloranaloginputandoutputforeasyconnectionatalllevels,small,antiinterferenceability,highreliability,goodstabilityinlonghoursunderharshenvironment,notintermittentoperation,andprogrammingissimple,easytomaintain.Inthispaper,S7300PLCsystemandnetworkbasedasynchronousstallwindturbineapplicationaredescribed.2AfancontroldeviceFanControlisthesafeandreliableoperationofwindturbinesakeytechnology,controldevicesandthewindturbineiscloselyrelatedtotheremainingparts,awindturbinetorunthebrain,normalandreliableoperationoftheentireunit,andareliableguaranteeforoptimaloperation1.FancontrolsystemstructureshowninFigure1,includingcentralcontrol,softandnetworkcontrolsystem,reactivepowercompensationcontrolsystemandtheyawcontrolsystem2.2.1FanControlSystemHardwareDesignMostwindturbineworksinhigh,cold,humidity,sandandotherharshnaturalenvironmentandstrongelectromagneticinterferenceenvironment,andunattended,requiringthattheirmaincontrollerinterferencecapability,highreliabilityandtheworkofvariousoperatingparametersaccuratemeasurement,controlstrategyarereasonable,timelyandaccurateprocessingFaults.Byanalyzingtherequirementsandcharacteristicsofthecontrolunit,moresequentialcontrol,thecontrolsystemtohandletheinputandoutputsignalsaremostlyswitchingsignal,sousePLCasthemastercontrollertomeetitswindturbinecontrolsystems.Requirementstomeasurewindturbineneeds,selectSiemensS7300typePLCmoduleandnetworkasastalltypecenterofasynchronouswindturbinecontroller.WindturbinecontrolsystemhardwarecomponentincludesthemaincontrolcabinetMainpanel,thecomputercabinetComputerpanel,capacitorcabinetsPhasecompensation,atthetopofcontrolcabinetTopbox,sensors,actuatorsandcontrolcables.Inthe750kWwindturbine,thetowercabincabinetPLCmoduleincludesdigitalinputmoduleSM321,analoginputmoduleSM331,highspeedcountingmoduleFM350,interfacemoduleIM153ET200series,etc.towerbottomPLCmodulecontrolcabinetincludesCPUmoduleCPU315,digitalinputmoduleSM321,digitaloutputmoduleSM322,communicationsprocessors,CP340,powersupplymodulePS307so.2.2FanControlSystemDesignSoftwareCombiningthecharacteristicsofPLCsystems,machinecontrolsystemusingtheSTEP7onthepreparationoffancontrolapplications,withstatementstablesandladdercombinationofmethodstoachievetheapplicationofmodular,structuredprogramming.Ismoreconvenientandsafeforwindturbinecontrol,lookoutturbinecontrolfunctionstobeachievedisdividedintoseveralrelativelyindependenttasks,inaccordancewiththemodularprogrammingsoftwareprogramming,themainprogramwascompletedforwindturbinegeneratorsstart,softandnetsizeofthemotorswitchcontrolandpowergenerationsystemoptimizationsubroutinesincludeshutdownsubroutine,emergencyshutdownsubroutine,yawsubroutine,JieLansubroutine,KaiPstopcontrolgearpumps,hydraulicpumpsKaiPstopcontrol,andgearoilssuchasheatingandcoolingroutine.Beforethestartofthemainswitchclosing,windturbinecontrollerisnowpreparedtorun.First,systeminitialization,controlprograminitialization,checkthestatusofmicrocontrollerhardwareandperipheralsareintact,detectionsystemparameterstemperature,hydraulicoil,pressure,winddirection,windspeed,etc.,comparethedetectedoperatingparameters,withoutfailure,thesystemcanformallystart.Start,firstcheckthenetworktodetecttheparametersofthegrid,setallcounters,outputoftheinitialworkofstateinstitutionsandtheopeningangleofthyristors3,afterthewindturbinestartautomatically.Windwheelangularleafrecoverybythe90°of0°,thewindbegantoturnround,thecomputerbegantorealtimemonitoringofvariousparameters,withtheincreaseinwindspeedround,windroundthefeedbackspeedsignalasinputtojudgetheconditions,intothecontrollertodeterminewhetherthegrid.Whenthepowersystemoperation,thesystemusedtodeterminetheparametersoftestparametershasexceededthelimit,theimplementationofyaw,phasecompensation,safetybrake.3ConclusionCombinationofwindpowercontrolrequirementstoS7300PLCmodule,forexample,onthe750kWwindturbinecontrolsystemwasoutlinedtostudythecompositionofitscontrolsystemandfancontrolprocess,thepaperdesignofPLCcontrolsystems,testFansoftheactualcontrolandoperationofwindturbinecanachievegoodcontrol.PLC控制器在风电机组中的应用1引言风能作为一种取之不尽、清洁无污染的可再生能源,其开发利用已经受到了世界各国的普遍重视,作为风力资源丰富的国家之一,我国的风力发电水平也取得了较快的发展。从20世纪70年代开始,并网型风力发电己经逐渐开始商业化,技术也日益成熟,单机容量越来越大,而失速型异步风电机已成为国内风电场的主要机型。作为采集风能的主要形式,风电机组的控制问题研究变得越来越重要。目前,在风电机组控制运行上,PLC控制已被国内外普遍采用。在最近几年,PLC以其诸多特点获得广泛的使用,在工业先进国家已成为工业控制的标准设备。它专为工业控制而设计,集电气、仪表、控制三电于一体,是实现机电一体化的理想控制设备。PLC采用可以编制程序的存储器,除了可以执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令,还可以完成各种顺序或定时的闭环控制功能。通过各类通讯接口与模块处理,进行数字式或模拟式的输入和输出,方便各级连接,体积小、抗干扰能力强、可靠性高、稳定性好、能在恶劣环境下长时间、不间断运行,且编程简单,维护方便。本文就S7300PLC系统在失速型并网异步风力发电机组中的应用进行了说明。2风机控制装置风机控制是整个风电机组安全可靠运行的关键技术,控制装置与风力发电机组的其余各部分密切相关,是风电机组运行的大脑,是整个机组正常可靠运行以及实现最佳运行的可靠保证1。风机控制系统结构图如图1所示,主要包括中心控制器、软并网控制系统、无功补偿控制系统和偏航控制系统等2。2.1风机控制系统硬件结构设计风电机组大多工作于高温、高寒、高湿、风沙等恶劣的自然环境与强电磁干扰环境中,且无人值守,要求其主控制器抗干扰能力强,工作可靠性高,各种运行参数测量准确,控制策略合理,对故障的判断处理及时准确。通过分析机组的控制要求与特点,顺序控制较多,控制系统需要处理的输入输出信号也大都是开关信号,所以选用PLC作为主控制器可以满足风电机组对其控制系统的要求。衡量风电机的要求需要,选择西门子公司的S7300型PLC模块作为失速型并网异步风电机组的中心控制器。风电机组控制装置的硬件组成主要包括主控制柜Mainpanel、计算机柜Computerpanel、电容柜Phasecompensation、顶部控制柜Topbox、传感器、执行机构以及控制电缆等。在750kW风电机组中,塔顶机舱柜中PLC模块主

注意事项

本文(外文翻译--PLC 控制器在风电机组中的应用.doc)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网([email protected]),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

copyright@ 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5