本文關(guān)鍵詞： 汽輪機 能效診斷 偏差分析 故障樹分析原理 模糊規(guī)則　出處：《華北電力大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：目前,我國在運行的火電機組基本都配備了自動控制系統(tǒng),但這些系統(tǒng)基本上都只是起到對機組狀態(tài)和參數(shù)監(jiān)控的作用,而不具備汽輪機能效指標(biāo)評價、在線能效診斷、系統(tǒng)性能評價等技術(shù)。而電廠運行人員在調(diào)整機組運行過程中主要關(guān)注安全運行,對機組運行的經(jīng)濟性不夠重視。因此,開發(fā)具備這些功能的汽輪機能效評價及診斷系統(tǒng)對于提高火電廠能效水平有重要意義。針對汽輪機能效診斷診斷,本文從兩個方面進行研究：一是對汽輪機主要運行參數(shù)和局部能效指標(biāo)參數(shù)的診斷,這部分主要采用偏差分析法和等效熱降法,重點研究偏差分析法在汽輪機主要運行參數(shù)能效診斷中的應(yīng)用機理和等效熱降法在設(shè)備局部參數(shù)能效診斷中應(yīng)用機理。二是對可能導(dǎo)致機組能效水平下降的熱力系統(tǒng)設(shè)備異�；蚬收线M行診斷,這部分主要采用故障樹分析原理同模糊診斷規(guī)則相結(jié)合的復(fù)合診斷方法,重點研究如何將這種診斷方法應(yīng)用于回?zé)嵯到y(tǒng)和凝汽器性能診斷當(dāng)中。文中分別對相應(yīng)的診斷模塊針對某電廠350MW機組進行了案例分析和診斷測試,驗證了診斷模型的正確性。確定診斷模型之后,文章介紹了運用上述診斷方法對目標(biāo)電廠某350MW機組進行幾種工況下的診斷,并做出了詳細的診斷報告,將診斷方法應(yīng)用于實際當(dāng)中,驗證了診斷思路的正確性,為開發(fā)診斷軟件奠定了扎實的理論基礎(chǔ)。
[Abstract]:At present, the thermal power units in operation in China are basically equipped with automatic control systems, but these systems basically only play a role in monitoring the unit status and parameters, but do not have the evaluation of turbine energy efficiency index. On-line energy efficiency diagnosis system performance evaluation and other technologies. Power plant operators mainly pay attention to safe operation in the process of adjusting unit operation and pay less attention to the economy of unit operation. The development of steam turbine energy efficiency evaluation and diagnosis system with these functions is of great significance for improving the energy efficiency level of thermal power plants. This paper studies from two aspects: first, the main operating parameters of steam turbine and local energy efficiency index parameters diagnosis, this part of the main use of deviation analysis and equivalent heat drop method. The application mechanism of deviation analysis method in the energy efficiency diagnosis of main operating parameters of steam turbine and the application mechanism of equivalent heat drop method in the diagnosis of local energy efficiency of equipment are mainly studied. System equipment abnormal or fault diagnosis. This part mainly uses the fault tree analysis principle and the fuzzy diagnosis rule to combine the compound diagnosis method. The emphasis is on how to apply this diagnosis method to the performance diagnosis of regenerative system and condenser. The case analysis and diagnosis test of the corresponding diagnostic module for 350 MW unit in a power plant are carried out in this paper. The correctness of the diagnostic model is verified. After determining the diagnostic model, the paper introduces the diagnosis of a 350MW unit in a target power plant under several working conditions by using the above diagnostic method, and makes a detailed diagnosis report. The application of diagnostic method in practice verifies the correctness of diagnostic thinking and lays a solid theoretical foundation for the development of diagnostic software.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM621

【參考文獻】

相關(guān)期刊論文 前4條

1 李勇,彭麗霞,趙金峰,林文斌;中間再熱式汽輪機理想循環(huán)熱效率定義方法的改進[J];汽輪機技術(shù);2005年05期

2 張瑞青;李勇;盛偉;肖增弘;;汽輪機排汽焓誤差對等效熱降法計算結(jié)果影響的研究[J];汽輪機技術(shù);2007年04期

3 劉繼平,嚴俊杰,陳國慧,邢秦安,林萬超;等效熱降理論的擴展研究[J];熱力發(fā)電;1998年05期

4 畢天姝,倪以信,吳復(fù)立,楊奇遜;基于新型神經(jīng)網(wǎng)絡(luò)的電網(wǎng)故障診斷方法[J];中國電機工程學(xué)報;2002年02期

，

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