基于智能算法的燃煤电站锅炉经济运行与nox排放多目标优化研究

《基于智能算法的燃煤电站锅炉经济运行与nox排放多目标优化研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ABSTRACTABSTRACTIntelligentalgorithmwasappliedtomulti-objectiveoptimizationofboilercombustionisoneoftheimportantmeasuresforenergyconservationandemissionsreduction,inthispaper,basedonavarietyofintelligentalgorithm,multi-objectiveoptimizationwascarriedoutontheboilercombustion.Fir

2、stofall,takinga660MWcoal-firedboilerastheresearchobject,usingBPartificialneuralnetworktoestablishtheboilercombustionpredictionmodelinthecaseofa660MWload,with23boilercombustionoperationparametersastheinput,theboilerthermalefficiencyandNOxemissionsfortheoutput.Therangeofmodeltrai

3、ningerroris-1.110-9and1.3310-9,theabsolutevalueofNOxemissioncalibrationsampleaverageerroris3.0398%,theabsolutevalueoftheboilerthermalefficiencycalibrationsampleaverageerroris0.1129%,thepredictionmodelhashigheraccuracyandgoodgeneralization.Basedonthepredictionmodelsofthecombus

4、tion,boilercombustionoptimizationmodelissetupusinggeneticalgorithmoptimizationalgorithm,amongthem,theweightcoefficientmethodisusedtotransformedthemulti-objectiveoptimizationproblemintoasingleobjectiveoptimizationproblem,anddifferentweightratio(0.1-0.9、0.2-0.8、0.3-0.7、0.4-0.6、0.

5、5-0.5、0.6-0.4、0.7-0.3、0.8-0.2)wereoptimizedrespectively.Theoptimizingresultsunderdifferentweightratioisdifferent,astheweightratioofNOxemissionsandthethermalefficiencyoftheboilerfrom1-9graduallyincreaseto8-2,thevalueofNOxemissionsby176mg/m3declinegraduallyto111mg/m3,theboilercom

6、bustionheatlossgraduallyrisefrom4.24%(Theboilerthermalefficiencyis95.76%)to6.05%(Theboilerthermalefficiencyis93.95%).AllofitssolutionsetformtheParetosolutionset,andpresentstheconcaveParetofrontier.Thefourthchapterintroducedthemulti-objectiveevolutionaryalgorithmbasedondecomposi

7、tiontotheboilercombustionmulti-objectiveoptimization,Chebyshevdecompositionstrategyisusedforboilercombustionoptimization,theoptimizedNOxemissionsintherangeof112mg/m3～183mg/m3,boilerheatlossis4.3%~5.8%,comparedwiththetraditionalgeneticalgorithm,theoptimizationeffectisabitpoor,an

8、deachhaveadvantagesandIV万方数据ABSTRACTdisadvantagesofbot