基于正态分布和两参数威布尔分布的风速曲线拟合方法研究-张盼盼

1004－289X201504－0047－03550025。TM61BＲesearchonthefittingMethodofWindCurvesBasedonNormalDistributionandTwoParameterWeibullDistributionZHANGPan-panGuizhouUniversityGuiyang550025ChinaAbstractTakenormaldistributionandtwoparameterweibulldistributionineverydaylifetofitactualwindspeeddataadoptmaximumquasi-naturemethodofestimationtogetrelevantparametersofthetwokindsofdistrubitionsandonthebasisofthiscomparetheprobabilitydensityfunctionanddistributiondensityarrangementofthesetwodistributionswiththefrequencyhistogramofthewindspeeddata．Forthisreasonweanalyzewhichdistributionfunctionsimulationwindspeeddistributionismoreideal．Theresultisthattwoparameterweibulldistributionistobeconsideredasthefittingwindspeedmodelbetter．Keywordsnormaldistributiontwoparameterweibulldistributionprobabilitydensityfunction1。。。。、。3.6m/s。。。1k＞3.5。2。3。4。5。。74《》2015．No．42。Xμσ2XNμσ2fx=1/2槡πσexp－x－μ22σ21μσ2。μ=0σ2=1X。μσ2。μσ2。3。fx=abxba－1exp－xbax≥02ab。ab。HOMEＲ、。4XX1X2X3…Xnx1x2x3…xnX1X2X3…Xnx1x2x3…xnLθ=Lx1x2x3…xnθ=∏ni=1fxiθ33x1x2x3…xn。x1x2x3…xnθLθ^θθ。^θθ。ddθlnLθ=045matab190%。14.384.33174.42832.30412.27052.3388115。fx=1/2槡π2.3041exp－x－4．3822×2．304125matlabab290%。2ab4.94551.99354.89111.96175.00062.0259246。fx=4．94551．9935x1．99353．9455exp－x1．99354．94556656matlab1。12。84《》2015．No．422。7。。。1．D．2012．2．C//262009141－143．3．J．20074－9．4．J．200838－39．5．J．200755－57．6．M．2008152－153．檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪2014－09－25463LLN0InputsExtrefIntAddrIEDdataset、Excel。SCDSCD7－8。51SCDSCD、、、SCD。2SCDSCD。3SCDSCD、。1．IEC61850J．2005291976－78．2．IEC61850IEDJ．2009371788－92．3．GOOSEJ．2007311985－90．4．J．2004282381－84．5．IEC61850J．20012598－11．6．J．201341267－72．7．IEC61850SCDJ．2010307117－120．8．J．2013332152－155．2014－06－161982－、。94《》2015．No．4