本文選題：天然氣管網(wǎng)　切入點(diǎn)：MATLAB　出處：《重慶大學(xué)》2013年博士論文　論文類型：學(xué)位論文

【摘要】：隨著天然氣事業(yè)的迅猛發(fā)展，我國的天然氣管網(wǎng)建設(shè)規(guī)模不斷壯大，城市天然氣管網(wǎng)的監(jiān)管越來越受到重視，并且城市天然氣管網(wǎng)向智能化的方向發(fā)展。由于，管網(wǎng)實(shí)際運(yùn)行水力工況對經(jīng)濟(jì)性、安全性及末端用氣的穩(wěn)定性有著極其重要的影響，因此，了解和掌握其水力工況對于整個管網(wǎng)的監(jiān)測、管理和調(diào)控是必不可少的，對城市天然氣管網(wǎng)模擬的研究也就顯得異常重要。 傳統(tǒng)的節(jié)點(diǎn)法進(jìn)行穩(wěn)態(tài)模擬結(jié)果的精度并不能完全滿足城市天然氣管網(wǎng)實(shí)際運(yùn)行的需求，因此，為了保證模擬結(jié)果的精確度，計(jì)算程序采用精度更高、適用性更強(qiáng)的數(shù)據(jù)處理和參數(shù)選擇方法。然后通過比較分析，選擇適當(dāng)?shù)膭討B(tài)模擬方法，編制動態(tài)模擬計(jì)算程序，并且驗(yàn)證程序計(jì)算結(jié)果的準(zhǔn)確性。 如今，城市天然氣需求量不斷增加，促使管網(wǎng)建設(shè)的規(guī)�；l(fā)展，管網(wǎng)結(jié)構(gòu)越來越復(fù)雜，并且壓力也越來越高，甚至達(dá)到超高壓。而超高壓管網(wǎng)的模擬必須考慮管路中燃?xì)獾目蓧嚎s性。本文通過對比幾種壓縮因子的計(jì)算方法，最終確定采用SHBWR狀態(tài)方程法，同樣，熱力學(xué)參數(shù)的計(jì)算也采用SHBWR狀態(tài)方程法。 另外，城市多氣源天然氣管網(wǎng)建設(shè)也成為發(fā)展的趨勢，而多氣源管網(wǎng)的模擬需要根據(jù)不同的氣源情況進(jìn)行分析，采用不同的處理方式計(jì)算。筆者利用模擬程序?qū)σ?guī)劃的多氣源城市天然氣管網(wǎng)項(xiàng)目進(jìn)行水力工況分析。提出未來各氣源在管網(wǎng)系統(tǒng)中的適用性，并提出各氣源的主要影響范圍，有利于未來管網(wǎng)運(yùn)行過程中，及時準(zhǔn)確的應(yīng)對各種狀況提供依據(jù)。 最后，根據(jù)多氣源天然氣輸氣管網(wǎng)中各氣源的供氣量和水力模擬計(jì)算結(jié)果中的管段流量值，可以確定各種氣源在各個管段及各個節(jié)點(diǎn)的氣質(zhì)組成，為供氣單位的運(yùn)行管理及對氣價(jià)的制定提供理論依據(jù)和數(shù)據(jù)支持。 本課題的研究表明，模擬程序不僅可以應(yīng)用于在用管網(wǎng)系統(tǒng)的模擬計(jì)算，分析管網(wǎng)運(yùn)行水力工況，而且可以應(yīng)用于規(guī)劃的管網(wǎng)。對于未來管網(wǎng)運(yùn)行工況的結(jié)果的分析對指導(dǎo)燃?xì)夤芫W(wǎng)的設(shè)計(jì)規(guī)劃、優(yōu)化運(yùn)行及調(diào)控管理等方面具有明顯的實(shí)用價(jià)值，，對于中游供氣模式及下游燃?xì)庥镁哌m用性研究都有一定的指導(dǎo)意義。
[Abstract]:With the rapid development of natural gas industry, the scale of natural gas network construction in our country is growing, the supervision of urban natural gas network is paid more and more attention, and the urban natural gas network is developing to the direction of intelligence. The actual hydraulic condition of the pipe network has an extremely important influence on the economy, safety and the stability of the terminal gas. Therefore, it is essential to understand and master its hydraulic condition for the monitoring, management and control of the whole pipe network. It is very important to study the simulation of urban natural gas network. The accuracy of the static simulation results of the traditional node method can not fully meet the needs of the actual operation of the urban natural gas pipeline network. Therefore, in order to ensure the accuracy of the simulation results, the accuracy of the calculation program is higher. The method of data processing and parameter selection is more applicable, and then through comparative analysis, the appropriate dynamic simulation method is selected, the dynamic simulation calculation program is compiled, and the accuracy of the calculation result is verified. Nowadays, the increasing demand for natural gas in cities is promoting the large-scale development of pipe network construction. The pipe network structure is becoming more and more complex, and the pressure is also increasing. The compressibility of the gas in the pipeline must be considered in the simulation of the ultra-high pressure pipe network. By comparing the calculation methods of several compression factors, the SHBWR equation of state method is finally adopted in this paper. The thermodynamic parameters are also calculated by SHBWR equation of state method. In addition, the construction of urban multi-source natural gas pipeline network has also become a trend of development, and the simulation of multi-source gas pipeline network needs to be analyzed according to different gas sources. By using different treatment methods, the author uses simulation program to analyze the hydraulic working conditions of the planned multi-source urban natural gas pipeline network project. The applicability of each gas source in the pipeline network system in the future and the main influence range of each gas source are put forward. In the future, the pipeline network operation process, timely and accurate response to various conditions to provide the basis. Finally, according to the gas supply of each gas source in multi-source natural gas transmission network and the flow value of the pipe section in the hydraulic simulation calculation result, the temperament composition of each gas source in each pipe section and each node can be determined. To provide theoretical basis and data support for the operation management of gas supply unit and the formulation of gas price. The research of this subject shows that the simulation program can not only be applied to the simulation calculation of the pipe network system, but also to the analysis of the hydraulic condition of the pipe network operation. And it can be applied to the planned pipeline network. The analysis of the result of the future pipeline network operation condition has obvious practical value in guiding the design and planning of the gas pipe network, optimizing the operation and regulating and managing, etc. It has certain guiding significance for the study of the gas supply model and the applicability of downstream gas appliances in the middle stream.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2013
【分類號】：TU996.7

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