重慶地區(qū)燃?xì)庳?fù)荷調(diào)查分析及其在管網(wǎng)水力模擬中的應(yīng)用研究
[Abstract]:Gas load forecasting is concerned about the safety, reliability and economic benefit of gas supply system. Load law and historical data are the basis of gas load forecasting. In recent years, the related researches mainly focus on the establishment and application of forecasting mathematical model, and lack of investigation and research on gas load. In addition, the gas load forecasting model is becoming more and more complex, but the gas company lacks the related technical personnel, so the application of the model is relatively difficult. By analyzing the characteristics of gas load in a certain area of Chongqing, according to the demand of gas company load forecasting, this paper establishes a simplified forecasting model of resident gas consumption, and sets up the total gas consumption distribution scheme. The distribution scheme is used to provide the basis for hydraulic simulation of gas pipeline network, so as to complete the simulation analysis and optimization design of the pipeline network under different working conditions. The main research contents are as follows: analyze the current situation of gas system load in the investigation area from 2013 to 2015, The monthly peak coefficient, daily peak coefficient and hourly peak coefficient of gas consumption in this area are calculated, and the law of gas consumption by commercial and industrial users is summarized, and the reasons for the formation of the law are analyzed. The survey divided residential buildings into villas, multi-storey, high-rise three-level collection of three categories of residents per-hour gas consumption. The quadratic regression model of "weekly gas load" and "weekly average temperature" is established by using mathematical statistics principle, and the weekly gas quantity is calculated, and the maximum probability non-uniform coefficient of 24 hours in winter is obtained by fitting the three kinds of residential buildings. By using the gas volume and the confidence interval of 95% each, the relationship between the daily air consumption on weekdays and weekends is obtained, and the hourly air consumption of residents on the same day is calculated. According to the predicted gas consumption and the commercial and industrial gas consumption characteristics of the region, the total gas consumption distribution scheme was formulated. Based on the pipeline parameters, the hydraulic calculation model of the pipeline network in this area was established, and the hydraulic simulation was carried out. It is proved that the quadratic regression model and distribution scheme have good applicability in this area. Finally, the hydraulic simulation at peak time, the calculation of the maximum bearing capacity of the pipe network and the optimization simulation of the pipe network are carried out by using the prediction model and the distribution scheme. To sum up, through the analysis and investigation of the gas consumption characteristics of the residents, commercial and industrial users, and using the general management data of gas companies, this paper predicts the gas consumption of the residents of the gas system in the jurisdiction. The distribution scheme of the total gas consumption in the pipe network is established and the hydraulic simulation calculation of the pipe network is carried out. The gas load characteristics of residents obtained from the investigation can provide a reference for the design of gas pipeline network in Chongqing, and the research idea is suitable for gas companies in other regions. The hydraulic simulation model of urban gas pipeline network is established and simulated under different working conditions according to the actual situation, which provides a reference for gas storage, peak-shaving and management and dispatching.
【學(xué)位授予單位】:重慶大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TU996.7
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