火电厂过热蒸汽温度控制系统设计

（二一一年六月摘要火电厂锅炉过热汽温控制系统是火电厂热工控制的主要组成部分，过热器的主要任务是保证锅炉所产生的蒸汽维持在一定温度范围之内，同时在锅炉允许的负荷波动变化范围内以及工况变化时保持过热蒸汽温度正常，其波动保持在规定范围以内。对于过热蒸汽温度的控制通常采用传统的PID控制,如串级控制和导前微分控制，这两种控制方法对于具有非线性、大滞后、大惯性和不确定性的汽温对象，都能得到令人满意的控制效果。本文设计了火力发电厂单元机组的过热汽温的控制系统。通过介绍过热器的工作原理和结构特点，然后分析影响过热汽温的各种G3252G13044，G7380后分G2047G5224用串级控制和导前微分控制G12651法对过热汽温G17839G15904了控制G11752G12362，G6984定了控制器G2454G6980，G5194G17839G15904了G1235G11507G11752G12362。G1235G11507结果G15932G7138G726这两种G12651法都能G3827G1363系统G5567G17907响G5224G5194G1363G17751G5567的G17810到G12295定，G17241G16855G18339G8616G17751G4579，所以都是G2499G15904的设计方G7708。G1863G19202G16801G726过热汽温G727串级控制G727导前微分控制本科毕业设计说明书题目火电厂过热蒸汽温度控制系统设计学生姓名学院电力学院系别自动化系专业自动化（电厂热工过程控制及自动化方向）班级自（电）072指导教师ABSTRACTSUPERHEATEDSTEAMBOILERTEMPERATURECONTROLSYSTEMISTHEMAINCOMPONENTOFTHETHERMALPOWERPLANTCONTROLSYSTEM,THEMAINTASKOFSUPERHEATERISTOGUARANTEETHEBOILERSTEAMGENERATEDWITHACERTAINTEMPERATUREWITHINLIMITS,ATTHESAMETIME,MAKESURETHEVOLATILITYOFSUPERHEATEDSTEAMTEMPERATUREWITHINTHESPECIFIEDSCOPEWHENTHEBOILERLOADFLUCTUATIONSANDCHANGESHAPPENWITHINTHESCOPEOFCHANGESINWORKINGCONDITIONSCONVENTIONALPIDCONTROLMODESUCHASCASCADECONTROLANDGUIDANCEDIFFERENTIALCONTROLCANBOTHGETSATISFACTORYCONTROLEFFECTINFACINGWITHDISTRIBUTEDPARAMETERCHARACTERISTICS,NONLINEAR,LAG,HIGHINERTIAANDUNCERTAINTYSTEAMTEMPERATURETARGETSTHEPRESENTPAPERDESIGNEDATHERMALPOWERPLANTUNITOFSUPERHEATEDSTEAMTEMPERATURECONTROLSYSTEMFIRSTOFALL,THEPAPERINTRODUCEDTHEWORKINGPRINCIPLEANDSTRUCTURESASWELLASCHARACTERISTICSOFTHESUPERHEATER,ANDTHENANALYZEDTHECAUSEWHICHHASINFLUENCEONTHESUPPERHEATEDSTEAMATLAST,APPLIEDCASCADECONTROLANDTHEGUIDANCEDIFFERENTIALCONTROLSYSTEMTOSTUDYTHESUPPERHEATEDSTEAMSEPARATELYANDMADEASIMULATIONASWELLTHESIMULINKRESULTSHOWSTHATTHETWOCONTROLSYSTEMCANRESPONSEQUICKLY,ACHIEVESTABLEQUICKLYANDHASRELATIVELYSMALLEROVERSHOOTCAPACITY,OVERALLTHEYAREVIABLEDESIGNOPTIONKEYWORDSBOILERTEMPERATURECASCADECONTROLGUIDANCEDIFFERENTIALCONTROLA2A0A1A3A4A5A6A7A8A9A4A10A11A12A13A14目录G5353G16340错误未定义书签。G12544一G12468火电厂的锅炉及过热器系统错误未定义书签。11火电厂锅炉设G3803G8022G17860错误未定义书签。12锅炉设G3803的组成错误未定义书签。13锅炉的分G12879错误未定义书签。14锅炉的过热设G3803错误未定义书签。141过热器错误未定义书签。142G1931G1969G8712系统错误未定义书签。15过热器的分G12879及G5079G13634G5430G5347错误未定义书签。151过热器的分G12879错误未定义书签。152过热器系统的G3534本G5079G13634G5430G5347错误未定义书签。G12544G1120G12468过热汽温G19757G5589和动G5589特性错误未定义书签。21影响过热汽温的G3252G13044错误未定义书签。211过热器G12879G3423对汽温的影响错误未定义书签。212G9907G8680G1403的主要影响G3252G13044错误未定义书签。213蒸汽G1403的主要影响G3252G13044错误未定义书签。22过热汽温G15999控对象的特性G11752G12362错误未定义书签。221G19757G5589特性错误未定义书签。222动G5589特性错误未定义书签。G12544G989G12468过热汽温串级控制系统错误未定义书签。31串级控制系统的分析错误未定义书签。32串级控制系统的设计和G16855G14422器的G17885G3423错误未定义书签。321主、G2115G3250G17347的设计原G2029错误未定义书签。322主、G2115G16855G14422器的G17885G3423错误未定义书签。33串级控制系统的G6984定错误未定义书签。34过热汽温串级控制系统的原理错误未定义书签。35过热汽温串级控制系统G2454G6980的G6984定错误未定义书签。36过热汽温串级控制系统G1235G11507错误未定义书签。G12544G3247G12468过热汽温导前微分控制系统错误未定义书签。A15A16A17A18A19A20A21A22A23A24A19A25A26A27A28A2941导前微分控制系统的组成错误未定义书签。42导前微分控制系统的特点错误未定义书签。43控制系统G2454G6980的G6984定错误未定义书签。431G12573效G1038串级控制系统G17839G15904G6984定错误未定义书签。432用G15929G1619法G17839G15904G6984定错误未定义书签。433两种G6984定方法的G8616G17751错误未定义书签。44控制系统的G1235G11507错误未定义书签。45两种汽温G14270动控制系统的G8616G17751错误未定义书签。结G16782错误未定义书签。G2454G13783文G10498错误未定义书签。G19480G5417错误未定义书签。G16886G17778错误未定义书签。A15A16A17A18A19A20A21A22A23A24A19A25A26A27A28A29自动化专业毕业设计（QQ347853789）A30A31A32A33A34A35A36A37A38A39A40A41A42A40A43A44A45A46A47A48A49A50A51A52A53A54A55A56A57A58A59A60A41A42A40A43A44A51A61A62A63A64A65A66A67A68A69A70A71A72A73A74A75A76A77A78A79A80A81A82A83A84A85A86A87A88A89A73A90A91A92A64A93A81A94A95A69A71A96A97A98A99A100A101A100A102A103A104A105A93A69A71A106A95A64A107A108A73部分毕业设计的题目G20G39G38G18G39G38A109A110A111A112A113A114A115A116A117A118A119A120A121A122A123A124A125G21A126A127A128A126A127A109A110A111A112A113A114A115A116A117A118A119A120A121A122A123A129A125G22A130A131A132A133A127A112A134A135A119A120A136A137A115A116A138A119A120A123A124A125G23A130A131G51G47G38A112A134A135A119A120A136A137A112A115A116A138A119A120G11A129G12G24A139A140A141G252A142A143A144A145A146A147A148A149A150A151A113A119A120A136A137A152A153G25A154A155A156A157A158G51G58G48A109A157A111A112A113A114A115A116A117A118A119A120A121A122G26A143A159A156A157A160A161A162A163A157A164A159A136A137A121A122G27A154A155A156A165A158A132A166A167A109A157A111A112A113A114A115A116A117A118A119A120A121A122G28A168A154A169A170A171A170A172A173A174A175A176A136A137A112A152A153G20G19A168A154A169A170A171A112A170A172A177A178A179A119A136A137G20G20A180A158A181A182A183A156A136A137A112A152A153G20G21A180A158A184A185A186A183A156A136A137A152A153G20G22A168A154A169A170A171A187A170A136A137A112A152A153G20G23A188A189A190A176A181A191A192A152A153G20G24A181A193A194A176A181A195A196A197A198A152A153G20G25A130A131G42G54G48A199A200A201A202A116A203A152A153G20G26A201A204A205A206A136A137A184A185A186A156A207A152A153G20G27A130A131G42G51G53G54A208A209A201A204A205A206A136A137A152A153G20G28A201A210A211A165A212A213A192A152A153G21G19A214A215A216A217A218A219A119A120A136A137A112A152A153A138A121A122G21G20A220A156A221A222A223A224A216A134A135A119A120A136A137A152A153G21G21A225A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