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ID:31977618
大小:1.86 MB
页数:54页
时间:2019-01-29
《基于多元扰动模型的通流部分初参数的优化-研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、华北电力人学顺lj学位论文AbstractWiththedevelopmentofelectricpowerenterprise,energyconservation,reducingpowercosts,increasingpowerplantelectricitypricecompetitivenessisthemaintaskfaI西ngtheelectricpowerindustryinChina.Accuratelyon—linemonitoringthehealthandeconomicperformanceandoptimizatingthecontrolpara
2、metersareimportantmeansofreducingenergyconsumptionandimprovingtheeconomy,butalsohaveimportantpracticalsignificance.Basedontheunifiedphysicalmodel,mathematical[modelforthermaleconomyanalysisofthermodynamicsystemandenergyefficiencyanalysismodelofthermodynamicsystemundermultivariatedisturbances
3、,withpartialtheoryofmatricesandvariableconditionsanalysisofunits,themodelot’theinfluenceofunitthermaleconomiconsteamturbineflowpassageinitialparamI酏erisestablished.Andasa660MWsupercriticalunitforinstance,thistextcalculatedtheinfluenceofunitthermaleconomicofmainsteampressure,mainsteamtemperat
4、ureandreheatsteamtemperature,anddrewachartbasedontheresults,andrevealeditsinfluenceregulanItdrewaconclusionthatwithinacertaininitialparameterperturbations,generatingstandardcoalconsumptionratechangeswiththeload,andthehighertheload,thesmallerthecoalconsumptionrate;meanwhile,thistextcomparedth
5、eeffectofcoalconsumptionrateoninitialparametersatdifferentloads.ThediagramthatdrawnfromtheresultsCanbeanalyzedthatparametersunderwhichconditionsimpactonthechangeofcoalconsumptionratebiggest,thusguidingunitintheactualoperationtofocusmorecloselyonoperationparametersofthiscondition,itprovidedgu
6、idancefortheactualoperationoftheunit.Inaddition,withanalyzingthevariableconditionsofunit,aimingatgeneratingstandardcoalconsumptionrateminimum,setupamodelofinitialparameteroptimizationofsteamturbineflowpassage.Andasa660MWsupercriticalunitforinstance,bycalculatingtheunitvariableconditions,andc
7、ompilingoptimizationprogram,thistextoptimizedtheinitialparameter.Optimizedforinitialpressure,cametotheoptimalpressurerunningcurves,andcomparedthemwithslidingpressureoperationcurvethatmanufacturersprovided.There’Sacertainamountofdeviationbetweenthem
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