火電廠冷卻水系統(tǒng)水力瞬變及冷端參數(shù)優(yōu)化研究.pdf

1、河海大學碩士學位論文火電廠冷卻水系統(tǒng)水力瞬變及冷端參數(shù)優(yōu)化研究姓名：楊志申請學位級別：碩士專業(yè)：水利水電工程指導教師：劉德有20070601AbstractWiththedramaticeconomygrowingofChinainrecentdecadesthepowergenerationmdllstrydevelopedrapidlytofillupthepowershortagegapThermalpowerhasbeenret

2、ainingtheportionof63％orsointhewholegenerationcapacityoftheworld111ethermalpowerunitisnowdevelopinginthedirectionofsuperhighparameters，bigcapacityhighefficiencyandlargescalepowerplantsItmakesthedesigningofcoolingsystematp

3、owerplantmoreandmorecomplex，sothereliabilityandsafetyofsystemoperationarebeingpaidgreatattentionwithintheindllstryMeanwhileastheextensionofgenerationcapacityatpowerplantandconsumptionofnnrenew曲leresourceintheworld，theimp

4、actoftheoptimaldesignandoperationinthewatersupplysystemontheuniteconomynowadayshasbeenthefocusresearchofenergyconservationBasedontheexistingliteraturethecomprehensiveandindepthresearchwhichfocusedontheadvancementofthesaf

5、etyduring打ansientprocessinwatercoolingsystemandtheoperationeconomyandsmbilityofcoldendatpowerplantwascarriedoutiIlthispaper1Mathematicalmodeloffluidtransientanalysisinthecoolingsystemwasbuiltanddifferenttypesofsystemboun

6、daryconditionwereanalyzedBasedonthat，theprogramwasmadeandthenvalidatedbythecomparisonbetweenthesimulationresultswiththeprojecttestingdataBythetransientsimulationofaspecificpowerplantsomemeasureswereraisedtocontrolthesyst

7、emwaterhanllner2Thesdectionofconstructionparametersforsiphonwelli11onetimeflowcoolingsystemwasdiscussed，andsomesuggestionsweregivenbasedonthesimulationofaprojectexampleFurthermorethemathematicalmodelforanotherspecialtype

8、ofsiphonwell(withaircheck)wasdeveloped，anditsbasicstructureandapplicationprinciplewerein仃oduced3Themethodofhydraulictransientsimulationcombinedwithcondenseroffdesigncalculationwasraisedillthispapertoseekfortheoptimalvalv

9、emovementlawwhichcouldcorrectthedeficienciesofneglectingthedynamiccharacterofcondenserwhilecoolingwaterquantitychangedduringtransientprocess4Themathematiealmodelofoptimaloperationmodei11coolingsystemwasbuiltandthecalcula

10、tionof，optimaloperatingwasmadeforbomwatersupplysystems：(1)thewaterquantitycouldbeadjustedcontinuously；(2)thewaterquantitycouldnotbeadjustedcontinuously5n心thermalperformancetheoryandeconomicanalysisofthedualpressureconden

11、serwereexplainedBythecalculationforarealprojecttheeconomicale伍ciencyofsinglepressureanddualpresanrecondenserwerecomparedwhichindicatedthatthedualpressurecondenserwaseconomicalespeciallyforhi曲一capacitygenerationunits6Desi

12、gningoptimizationofthecoldendsystematpowerplantwasanalyzed，andthemathematicalmodelwasdevelopedCombiningwith600MWunitoptimizationexample，somehypersensitiveissueswerecomparedandanalyzedbyusingthecorrelativeoptimizingprogra