基于BP神經(jīng)網(wǎng)絡的300MW機組熱力系統(tǒng)故障診斷系統(tǒng)研究.pdf

1、華北電力大學（保定）碩士學位論文基于BP神經(jīng)網(wǎng)絡的300MW機組熱力系統(tǒng)故障診斷系統(tǒng)研究姓名：代志綱申請學位級別：碩士專業(yè)：熱能工程指導教師：丁常富20061220華北電力文學硬士學位論文攮要摘要本文按照熱力系統(tǒng)簡捷算法理論建立了菜300MW凝汽式機緞的汽水方程，計算茭在額定釋交受凳王囂下鶼各疆熬經(jīng)濟捂標幫離麓系統(tǒng)參數(shù)蟊豁值，為熱力系統(tǒng)變工況下的故障診斷提供了依據(jù)。對高壓加熱器系統(tǒng)和凝汽器系統(tǒng)的故障機理進行7輯究，箍爨采用囂瀑鼓簿模式諼

2、剃方法遴行高燕系統(tǒng)靜放障診麓，結合有關專家經(jīng)驗和相關文獻分析總結了商壓加熱器系統(tǒng)和凝汽器系統(tǒng)的故障樣本特征知識庫，勞建囊BP哮經(jīng)弼終瓣各鑫鰨浚癢滋行了綴好鶼潮練。鬟麓VB謠耀Matl曲方法阡發(fā)了300MW汽輪機級的熱力系統(tǒng)故障診斷系統(tǒng)，該系統(tǒng)具有診斷迅速，界面友好，操佟攜單等特點。關鍵調(diào)：300臻iV汽輪規(guī)緩，熱力系繞，羧顰滲藐，靜秘經(jīng)瓣終ABST戳kCTInordertodiagnosethe攝曛ofthermodynamicsyst

3、emindifferentload。thispapersetsupthesteamwaterdistributionequationofa300MWcondensingunitaccordingtotheshortcutmethodtheoryofthermodynamiosystemandcalculatesallthekindsofthermaleconomyindexandtheparametertargetvaluesofhig

4、hpressureheatersystem1thasbeencarriedoutwhatisthemechanismofhighpressureheatersystemandcondensersystemThefaultsamplecharacterknowledgebaseofthetwosystemshasbeenestablishedcombinedwiththeexpertexperiencesandcorrelativelit

5、eratureAmethodWasbroughtforwardthatdiagnosethefaultofhighpressureheaterbyadoptingdouble—deckfaultmoderecognitionmethodandthetwoknowledgebaseshavebeentrainingcommendablybydifferentBPnetworkItWasexploitedwhatisthefaultdiag

6、nosissystemofthethermodynamicsystemof300MWsteamturbineunitthroughthemethodofcallingMatlabbymeansofVBAndthissystemhasthecharacteristicssuchasquickdiagnosisfriendlyinterfaceandeasyoperationetcDaiZhigang(Thermalpowerenginee