Study On Operation And Scheduling Scheme Of Gas Pipeline Network In South Shanxi

Because of the transit countries trunkline-west-east gas mains and rich CBM resources,shanxi southern gas transmission pipeline in gas source point and complete structure,but at the same time there is a phased investment construction,complex structure and gas transmission efficiency is low,in network planning and design and operation of gas enterprises is hard to do by being familiar with the network system structure characteristics,operation rules and load change make decisions quickly,so the gas transmission pipeline network system simulation model is set up,in different working condition of pipe network steady-state and dynamic simulation and optimization of pipe network research has important practical significance.This paper in the basis of the data acquisition in southern shanxi gas transmission pipelines and operation parameters,based on the simulation model of the software TGNET in southern shanxi gas transmission pipeline network simulation model is established,and the different network conditions(summer winter peak,trough,prediction of load and the gas source faults,leakage,etc.)for steady state and dynamic simulation and analysis of research,for network operation scheme optimization,special working conditions to take emergency measures and network planning and construction next to provide strong support.The results are as follows:(1)The theoretical basis of establishing the simulation model of gas transmission pipeline network is studied,and the gas parameters,pipeline parameters and hydraulic friction coefficient of the model are studied,and the effective solution method is determined in combination with the pipe network and gas situation.(2)Based on the gas transmission network simulation software TGNET,the simulation model of the gas transmission network in the southern part of Shanxi Province was established,and the relevant operation data were collected from the SCADA system to check the model,and the error of the model(pressure)was realized within 3%.(3)Based on the simulation of load conditions in peak and trough of the southern pipe network in Shanxi province in recent one year,the operating conditions and the most unfavorable points of the existing pipe network are determined through the simulation analysis,and the effective suggestions for the operation scheduling of the pipe network are put forward.(4)Based on LSTM neural network,the medium and long term(5 years)load of the pipe network terminal is predicted,the predicted load is simulated,the adaptability of the pipe network is analyzed,and the optimization scheme of the pipe network planning and design is proposed.(5)Through the dynamic simulation analysis of the three major gas source faults and pipeline leakage and other special conditions,the emergency repair scheme and the optimal operation scheme of leakage faults are proposed.