火力发电厂锅炉入炉煤质的软测量技术及应用

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1、东南大学硕士学位论文火力发电厂锅炉入炉煤质的软测量技术及应用姓名：张磊申请学位级别：硕士专业：动力机械及工程指导教师：陈绍炳20070101东南大学硕七学位论丈AbstractSince50sof20century,ourelectricpowerindustryindevelopingrapidlyandtheinnovationisdeeping．Inordertoimprovetheeconomy，andsupervisetherunningparameters，manysupervisingsystemweTebuiltinthepo

2、werplants．However,someparametersarestillnotsupervisable，suchascoalquniity．Coalqualityisimportanttothesafetyandeconomicmnofthepowerplantunits．Thechangeofthecoalwoulddirectlyinfluencefromtheboilertothewholepowerplant．Theanalyseofcoalqualityisstilldoneinthelabpresendy,theresul

3、tofwhichistoolatertoinstmcttheoperationoftheboiler．Asaresult，itisaurgentproblemtoanalysethecoalqualityonlineatthetimewebuildtherunningsupervisingsystem．Thispaperappliesthesoft-measuretechnologyontheonlineanalyseofthecoalquality,whichprovidesunewmethodintherealproject．Astheb

4、oilersysteminthepowerplantissuchatypicalcomplicate．changingandnonlinearsystemthatthispapertaketheartificialneuralnetwork(ANN)astooltobuildthesoft—measuresystem．Theeffectisgood．First，thispaperexpatiatesthemaincontentandmodelbuildingmethod，analysetheimprovemethodsoftheBP(Back

5、Propagation)network．PointtotheproblemthattheBPalgorithmeasilybecominglocal-minimum,thispaperusegeneticalgorithm(GA)tooptimizetheinitialdghtsofthenetwork．Meanwhile,thispaperdetailstheANNandGAtheory．Second，thispaperintroducesthedesignprocessofthesoft-measuremodel，includingbot

6、htheANNandtheGA．Third,afterthemodelisbuilt，thispapertrainsitandtestitwiththemnningdatainthepowerplant．ThetestresultimprovesthatthemodelisexactandbeuerthanthepureBPnetwork,whichisenouglltotheprojectapplication．Atlast．thispaperuseVisualC++softwaretobuildaonlinesoft—measuresys

7、temofthecoalquniitywhichhasagoodoperationmethodandfriendlyinterface．Itissuitableforthemodelthispaperbuilds．Thesoft-measuremethodofthispaperdevelopsanewwaytoanalysethecoalquality,andthealgorithmwillhelpothermodelbuildingfields．Keywords：SoftMeasurement；ArtificialNeuralNetwork

8、(ANN)；GeneticAlgorithm(GA)；IndustrialComponent；LowCaloric；Ⅱ东南大学学位论文独创性声明本人声明所呈交的学位