The Modeling And Simulation Of Gas Distribution Pipeline Network

Gas distribution network is a city in the transmission and distribution of gas pipe network, it will natural gas distribution station according to the different levels of pressure delivered to millions of households. All facilities including the main trunk gas pipeline terminal and above about, and possible future gas supply situation, the central task is regulation during the day and night users to use gas peak and valley characteristics, and different types of gas stations is regulated in different seasons and different time nodes with peak and valley characteristics, the main city gas facilities. Because the actual hydraulic condition of the gas pipeline network of economic, security, stability and will have a very important influence and interference. Therefore, the mastery and application of the hydraulic conditions for the city pipe network monitoring, control and management is essential. Therefore, for urban natural gas pipeline network for simulation modeling study is very important.This study emphatically to modeling and simulation as arithmetic means, to city gas pipeline network and medium to run as the research object, to find different pipe sections of operating medium flow characteristics, so as to realize the multi gas source peaking emergency scheduling. Natural gas pipeline is an important part of urban gas transmission and distribution system, the main storage equipment and the most of the movement process are inseparable with the pipeline. The gas pipeline is usually assumed to be isothermal, and the unidirectional flow is modeled. Given the two simplified model, they are from the partial differential equation of control of the process dynamics equations, the model of integration of the two numerical schemes are given, through the simulation experiment, gas shows pressure drop along the pipeline has a strong dependence and long-term tendency. In order to solve the problem of system dynamics, the MATLAB-Simulink database can be widely used. With this library can be simulated separately from each component, so as to simulate the status of a distribution network, through the simulation of the city gas safety operation and multi gas source scheduling beneficial initiatives.