建模与仿真的配气管道网络研究

发布时间：2018-04-17 23:08

本文选题：配气管道 + 网络　；参考：《东北石油大学》2016年硕士论文

【摘要】：配气网络是城区内输送和分配燃气的管网,它将天然气自配气站按不同等级压力输送到千家万户。其中主干线输气管道终端和以上谈及的各类设施,以及将来可能出现的多气源情形,其中心任务是调节白天和晚上用户用气的峰谷特特征,而不同类型的储气场站是调节不同季节、不同时间节点用气峰谷特性的主要城市燃气设施。由于,燃气管网运行的实际水力工况会对经济性、稳定性和安全性将有着十分重要的干扰和影响,因此,掌握和运用其水力的工况对于全城管网的监测、调控和管理是必不可少的,因此,对城市的天然气管网进行模拟的建模研究也就显得十分重要。本研究着重以建模与仿真为运算手段,以城市燃气管网及运行介质为研究对象,以发现不同管段运行介质的流动特征,进而实现多气源的应急调峰调度。天然气管道是城市燃气输配系统的重要组成部分,城市燃气主要的存贮设备和绝大部分的运动过程都与管道密不可分。通常将通过燃气管道的气体假设成等温,单向流进行建模。文中给出了两种简化模型,它们是从偏微分方程控制该过程的动力学方程组推导而来的,这两个数值方案给出了这些模型的整合,通过模拟实验,燃气显示了压力降沿管道有很强的依赖性与长远的倾向。为了解决系统动力学问题,可以通过广泛使用MATLAB-Simulink数据库。有了这个库就可以从每个组件单独模拟,从而模拟一个配气网络的状态,通过模拟测试得出对城市燃气安全运行和多气源调度有益的举措。
[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.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU996

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