Establishment And Application Of Shandong Natural Gas Trunk Pipe Network Simulation Model

With the expansion of natural gas development and scale, the natural gas pipeline network system of Shandong is becoming increasingly huge and complex. On the one hand, it is of great difficulty to figure out the regularity of network system, analysis and tackle the accident and emergency, and come up with feasible design and running plans; on the other hand, due to the direct influence on the relationship among natural gas production, supply and demand, pipeline network requires much more stringent design, running and management. So it becomes the most concern of the management department to guarantee the design and running of natural gas pipeline network subject to the complicate running condition (starting/stopping compressors, opening/shutting the valves, variable inlet/outlet volume, and instability of gas consumption), to acquire the regularity of variable natural pipeline running parameters, to analysis and deal with the emergency of the pipeline system. The paper is based on the simulation of natural gas pipeline network in Shandong province, aiming to promote the design and management of the network and has drawn the conclusions as below:(1) Researches on the theorem and methods of pipeline simulation, build mathematic simulation model, and find out efficient solution;(2) Based on the simulation software TGNET, build the stable and dynamics mathematic simulation model of Shandong network pipelines, and adapt the model based on the simulation statistics, achieving the goal of95%conformity;(3) Dynamically analysis the explosion of pipeline network in Jingqing, Shandong, and settle the controlling scheme according to the simulation, by which the pipeline east-towards the emergency site has revived to achieve the supply and demand balance.(4) Aiming at the manipulation of directing the pipelines under certain pressure in Zhougong River region, the controlling scheme has been drew by simulation analysis, guaranteeing the stability of the whole line system.(5) Simulate the operating condition when shutting down compressors, and graphs the transient process of pressure and volume after shutting down the compressors along Yuji pipeline, providing reference for solution to the correlated emergency.