Dynamic Simulation Model for Gas Transmission Pipeline Network System

Abstract

The dynamic simulation calculation of gas pipeline network is complicated. Usually, for each pipeline, energy conservation, mass conservation and momentum conservation are used to establish the non-linear equations[1-2]. For some complex pipeline network flow with multiple entries and outlets, the calculation is very slow, and cannot achieve real-time calculation. This study presents a new method for calculating the pressure between pipelines by assuming that the pipeline is a single vessel, calculating the flow rate between the pipelines by the pressure difference between the pipelines, and then using the flow rate as the intermediate coupling relationship to calculate pipe pressure. This method is simple, fast, with few boundary limitations, which can assist the design and operation verification of complex pipeline networks.