大型汽輪發(fā)電機(jī)組油膜失穩(wěn)故障診斷技術(shù)的研究.pdf

1、華北電力大學(xué)碩士學(xué)位論文隨著汽輪發(fā)電機(jī)組功率不斷增大，其動(dòng)力學(xué)行為也變得更加復(fù)雜，使得發(fā)生油膜失穩(wěn)故障的可能性和危害性隨之加大，同時(shí)隨著網(wǎng)絡(luò)技術(shù)的迅猛發(fā)展，使得開(kāi)發(fā)基于Internet的汽輪發(fā)電機(jī)組振動(dòng)故障遠(yuǎn)程診斷具有重要意義。本文在基于工程實(shí)用性原則基礎(chǔ)上，主要圍繞開(kāi)發(fā)基于BS模式的振動(dòng)故障遠(yuǎn)程診斷系統(tǒng)平臺(tái)，并將其應(yīng)用于油膜失穩(wěn)故障診斷。首先從不同角度總結(jié)油膜失穩(wěn)故障發(fā)生的機(jī)理和相關(guān)征兆，其次采用基于強(qiáng)度與精度參數(shù)的方法獲取油膜失穩(wěn)故

2、障診斷規(guī)則的相關(guān)參數(shù)，設(shè)計(jì)系統(tǒng)的推理機(jī)制，運(yùn)用專家系統(tǒng)診的方法診斷油膜失穩(wěn)故障。最后設(shè)計(jì)系統(tǒng)總體方案、研究實(shí)現(xiàn)遠(yuǎn)程診斷的相關(guān)技術(shù)以及開(kāi)發(fā)系統(tǒng)主要功能模塊。經(jīng)過(guò)測(cè)試，系統(tǒng)功能達(dá)到預(yù)期效果。關(guān)鍵詞:油膜失穩(wěn)，專家系統(tǒng)，BS模式，遠(yuǎn)程故障診斷ABSTRACTWiththeinereasingPowerofThrbine一Generat(TG)unitmuehmecomPlexityofdynamicbehaviot，ithasalreadyi

3、nereasedthePossibilityof011一Filmandaugmentedthedangerousof011一Film，simultaneouslywiththeraPiddeveloPmentofnetworkteehnologyit15ofgreatimPortaneetodeveloPtheremoteTGunitvibrationfaultdiagnosissystembasedonB5.ThisPaPer15ma

4、inlyfocusedonthedeveloPingthePlatformofremoteTGunitvibrationfaultdiagnosissystembasedonthePrinciPlesofengineeringPractieabilitywhieh15usedtodiagnosethe011一Filminstability.Firstly，themeehanismandrelevantsymPtomaresummariz

5、edftomdifferentProsPects.Seeondly，theParametersofdiagnosisrule15obtainedbythemethodofintensityandPrecisionParameters，thenthereasoningmeehanism15designed，theexPertsystem15usedtodiagnosisthe011一Filmfault.Finally，theoverall

6、Programofthesystem15designed，thetechniquerelatedtemotefaultdiagnosis15researchedanddeveloPedthemainfunetionmodule.Aftertesting，theremotevibrationfaultdiagnosissystem15sueeeededindiagnosingthe011一Filminstability.YinXuyu(P

7、owermechaniealengineering)DireetedbyProf.YangKun，GuYujiongKEYWORDS:011FIIm，ExPertSystem，BS，RemoteDiagnosis華北電力大學(xué)碩士學(xué)位論文3.3診斷規(guī)則的表示與參數(shù)獲取..................................……293.3.1基于強(qiáng)度與精度參數(shù)的診斷規(guī)則的表示....................……293.3

8、.2診斷規(guī)則的參數(shù)獲取....................................……303.4振動(dòng)故障診斷知識(shí)庫(kù)的建立與管理............................……333.4.1振動(dòng)故障診斷知識(shí)庫(kù)的建立..............................……333.4.2振動(dòng)故障診斷知識(shí)庫(kù)的管理..............................……343.5故障診斷推理機(jī)制設(shè)計(jì)....

9、..................................……363.6本章小結(jié)...................................................……37第四章汽輪發(fā)電機(jī)組振動(dòng)故障遠(yuǎn)程診斷系統(tǒng)設(shè)計(jì).......................……384.1汽輪發(fā)電機(jī)組振動(dòng)故障診斷系統(tǒng)結(jié)構(gòu)............................……384.1.1系統(tǒng)總體結(jié)構(gòu)設(shè)計(jì)........

10、..............................……384.1.2系統(tǒng)功能模塊組成......................................……384.1.3系統(tǒng)開(kāi)發(fā)平臺(tái)與工具選擇................................……414.2振動(dòng)故障診斷系統(tǒng)實(shí)現(xiàn)模式選擇..............................……424.2.1客戶服務(wù)器(CS)模式............

11、......................……424.2.2瀏覽器服務(wù)器(BS)模式................................……434.2.3CS與BS模式比較....................................……444.3振動(dòng)故障遠(yuǎn)程診斷相關(guān)技術(shù)..................................……454.3.1Socket網(wǎng)絡(luò)通訊技術(shù).................

12、..................……454.3.2實(shí)時(shí)波形數(shù)據(jù)讀取......................................……484.3.3WEB頁(yè)面閃爍與實(shí)時(shí)數(shù)據(jù)刷新............................……494.4本章小結(jié)...................................................……50第五章系統(tǒng)實(shí)現(xiàn)與油膜失穩(wěn)故障診斷..............

13、..................……515.1振動(dòng)故障診斷系統(tǒng)實(shí)時(shí)監(jiān)測(cè)模塊..............................……515.2振動(dòng)故障診斷系統(tǒng)狀態(tài)分析模塊................................……535.3振動(dòng)故障遠(yuǎn)程診斷系統(tǒng)模塊..................................……555.3.1油膜失穩(wěn)故障遠(yuǎn)程診斷..........................

14、........……555.3.2振動(dòng)故障診斷歷史記錄..................................……555.4數(shù)據(jù)庫(kù)管理模塊.............................................……565.4.1振動(dòng)故障征兆管理模塊..................................……575.4.2振動(dòng)故障規(guī)則庫(kù)管理模塊...........................

15、.....……585.5本章小結(jié)...................................................……59第六章結(jié)論與展望................................................……606.1論文研究?jī)?nèi)容總結(jié).......................................……。二606.2本論文研究中存在的問(wèn)題和進(jìn)一步的研究工作..........