本文選題：供熱鍋爐 + 數(shù)據(jù)挖掘　； 參考：《大連海事大學》2017年碩士論文

【摘要】：傳統(tǒng)的供熱行業(yè)由于實際操作缺乏理論指導,管理上缺少有效地評價機制導致其能耗水平居高不下。所以研究供熱鍋爐的運行優(yōu)化方式,為供熱企業(yè)提供在實際生產(chǎn)過程當中有效地操作指導有著實際的意義。目前我國的供熱企業(yè)主要使用鏈條式燃煤鍋爐,而燃煤鍋爐的燃燒過程極為復雜,各變量間相互耦合,并且具有大滯后、非線性等特點,所以要獲取準確的數(shù)學模型非常困難。但隨著信息技術的發(fā)展,在供熱企業(yè)在生產(chǎn)過程中產(chǎn)生了大量的數(shù)據(jù),且這些數(shù)據(jù)當中蘊含著大量與鍋爐運行狀態(tài)有關的信息。而由于企業(yè)不重視,同時又缺乏相關的統(tǒng)計學知識,這些數(shù)據(jù)沒有沒有效地利用。本文針對這一現(xiàn)狀,在研究分析了鍋爐運行機理后結合數(shù)據(jù)挖掘的手段對鍋爐歷史數(shù)據(jù)進行分析和關聯(lián)規(guī)則的挖掘從而設計了一種針對鍋爐操作變量的鍋爐運行優(yōu)化方法,主要內(nèi)容如下:本文首先對燃煤熱水鍋爐的運行機理進行分析,確定將鼓風機轉速、引風機轉速、爐排轉速、給煤機轉速作為可操作變量。通過挖掘這4個操作變量與鍋爐運行高效率點的關聯(lián)規(guī)則,并根據(jù)關聯(lián)規(guī)則調(diào)節(jié)操作變量達到對鍋爐燃燒效率進行優(yōu)化的目的。其次利用拉格朗日差值法等統(tǒng)計學方法對歷史數(shù)據(jù)進行缺失數(shù)據(jù)的修補與異常值的剔除,并將處理后的歷史數(shù)據(jù)進行離散化,選用Apriori法對歷史數(shù)據(jù)進行關聯(lián)規(guī)則的挖掘。對初步獲取的關聯(lián)規(guī)則進行合并與剔除形成關聯(lián)規(guī)則庫,并以此關聯(lián)規(guī)則庫作為鍋爐運行優(yōu)化指導的工具。然后詳細說明了利用關聯(lián)規(guī)則法對鍋爐運行優(yōu)化的具體步驟,根據(jù)鍋爐運行的實時數(shù)據(jù)從關聯(lián)規(guī)則庫當中搜索符合當前鍋爐運行狀態(tài)的關聯(lián)規(guī)則。以給煤機轉速為基點,并根據(jù)關聯(lián)規(guī)則中建議的操作變量取值區(qū)間調(diào)節(jié)鍋爐的鼓風、引風、爐排等變量。最后將此優(yōu)化方法在大連某公司的熱水燃煤鏈條鍋爐進行實際應用,驗證了該方法的有效性。相比于傳統(tǒng)的操作習慣,該操作方法可以明顯的提升鍋爐的燃燒效率。
[Abstract]:Because of the lack of theoretical guidance in the practical operation and the lack of effective evaluation mechanism in the traditional heating industry, the energy consumption level of the traditional heating industry remains high. Therefore, it is of practical significance to study the operation optimization mode of heating boiler, to provide effective operation guidance in the actual production process for heating enterprises. At present, chain type coal-fired boilers are mainly used in heating enterprises in our country, but the combustion process of coal-fired boilers is extremely complex, the variables are coupled with each other, and have the characteristics of large lag and nonlinear, so it is very difficult to obtain accurate mathematical models. However, with the development of information technology, a large number of data are produced in the production process of heating enterprises, and these data contain a large amount of information related to the operation state of the boiler. However, these data are not used effectively because the enterprises do not pay attention to and lack the relevant statistical knowledge at the same time. In view of this situation, after studying and analyzing the boiler operation mechanism and combining the means of data mining, this paper analyzes the boiler historical data and mining the association rules, and then designs a boiler operation optimization method aiming at the boiler operation variables. The main contents are as follows: firstly, the operating mechanism of coal-fired hot water boiler is analyzed, and the rotating speed of blower, induced fan, grate and coal feeder are determined as operable variables. By mining the four operating variables and regulating the operation variables according to the association rules, the boiler combustion efficiency can be optimized. Secondly, using the Lagrange difference method and other statistical methods to repair the missing data and eliminate the outliers, and discretize the processed historical data, Apriori method is used to mining the association rules of the historical data. The association rules are merged and eliminated to form the association rules base, and the association rules base is used as the guidance tool for boiler operation optimization. Then, the detailed steps of optimizing boiler operation by using association rule method are explained in detail. According to the real-time data of boiler operation, the association rules are searched from the association rules database to accord with the current boiler operation state. Based on the rotational speed of coal feeder, the variables such as blast, draft air and grate of boiler are adjusted according to the operation variables suggested in the association rules. Finally, the optimization method is applied to a hot water coal-fired chain boiler in Dalian Company, and the effectiveness of the method is verified. Compared with the traditional operation habits, this operation method can obviously improve the combustion efficiency of the boiler.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP311.13;TU833.11

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