發(fā)布時間：2018-04-17 23:08

  本文選題：配氣管道 + 網(wǎng)絡(luò)��； 參考：《東北石油大學》2016年碩士論文

【摘要】：配氣網(wǎng)絡(luò)是城區(qū)內(nèi)輸送和分配燃氣的管網(wǎng),它將天然氣自配氣站按不同等級壓力輸送到千家萬戶。其中主干線輸氣管道終端和以上談及的各類設(shè)施,以及將來可能出現(xiàn)的多氣源情形,其中心任務(wù)是調(diào)節(jié)白天和晚上用戶用氣的峰谷特特征,而不同類型的儲氣場站是調(diào)節(jié)不同季節(jié)、不同時間節(jié)點用氣峰谷特性的主要城市燃氣設(shè)施。由于,燃氣管網(wǎng)運行的實際水力工況會對經(jīng)濟性、穩(wěn)定性和安全性將有著十分重要的干擾和影響,因此,掌握和運用其水力的工況對于全城管網(wǎng)的監(jiān)測、調(diào)控和管理是必不可少的,因此,對城市的天然氣管網(wǎng)進行模擬的建模研究也就顯得十分重要。本研究著重以建模與仿真為運算手段,以城市燃氣管網(wǎng)及運行介質(zhì)為研究對象,以發(fā)現(xiàn)不同管段運行介質(zhì)的流動特征,進而實現(xiàn)多氣源的應(yīng)急調(diào)峰調(diào)度。天然氣管道是城市燃氣輸配系統(tǒng)的重要組成部分,城市燃氣主要的存貯設(shè)備和絕大部分的運動過程都與管道密不可分。通常將通過燃氣管道的氣體假設(shè)成等溫,單向流進行建模。文中給出了兩種簡化模型,它們是從偏微分方程控制該過程的動力學方程組推導而來的,這兩個數(shù)值方案給出了這些模型的整合,通過模擬實驗,燃氣顯示了壓力降沿管道有很強的依賴性與長遠的傾向。為了解決系統(tǒng)動力學問題,可以通過廣泛使用MATLAB-Simulink數(shù)據(jù)庫。有了這個庫就可以從每個組件單獨模擬,從而模擬一個配氣網(wǎng)絡(luò)的狀態(tài),通過模擬測試得出對城市燃氣安全運行和多氣源調(diào)度有益的舉措。
[Abstract]:Gas distribution network is a pipeline network for conveying and distributing gas in urban area. It conveys natural gas distribution stations to thousands of households according to different pressure.Among them, the main trunk gas pipeline terminal and the various facilities mentioned above, as well as the possible multi-gas source situation in the future, its central task is to adjust the peak and valley characteristics of the gas used by the users during the day and at night.Different types of gas storage stations are the main urban gas facilities which regulate the gas peak and valley characteristics in different seasons and different time points.Because the actual hydraulic condition of gas pipe network operation will have very important interference and influence on economy, stability and safety, therefore, it is necessary to master and use its hydraulic condition to monitor the whole city pipe network.Regulation and management are essential, so it is very important to model the natural gas network in cities.This study focuses on modeling and simulation, taking urban gas pipeline network and operation media as the research object, to find out the flow characteristics of different pipe segments, and then to realize the emergency peak regulation scheduling of multiple gas sources.Natural gas pipeline is an important part of urban gas transmission and distribution system. The main storage equipment and most of the moving process of urban gas pipeline are closely related to the pipeline.The gas passing through the gas pipeline is usually assumed to be isothermal and unidirectional.In this paper, two simplified models are given, which are derived from the dynamic equations of partial differential equations to control the process. The integration of these models is given in these two numerical schemes, and the simulation experiments are carried out.Gas shows that the pressure drop along the pipeline has a strong dependence and long-term propensity.In order to solve the problem of system dynamics, MATLAB-Simulink database can be widely used.With this library, each component can be simulated separately, thus simulating the state of a gas distribution network. Through the simulation tests, some useful measures for the safe operation of urban gas and the scheduling of multiple gas sources are obtained.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TU996

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本文編號：1765700