川气东送管道模拟仿真软件研发

随着川气东送管道工程等国家重大天然气管道工程的启动,研发具有自主知识产权的管道模拟仿真软件势在必行。以“川气东送”工程为背景,采用连续性方程、动量方程、能量方程、SHBWR真实气体状态方程建立了较真实反映管内气体流动的静、动态数学模型,并分别采用四阶龙格-库塔法及隐式中心有限差分法进行数值求解;分析给出了管道多种工况及静（动）态调峰能力计算、动态预测模型。在以C++builder 6.0为开发工具,有机地吸取工控软件与计算软件各自的优势,及数据库、图形化编程理念的基础上,编制了川气东送管道模拟仿真软件。利用TGNET软件及设计资料,完成了软件部分核心程序的验证,并分析了计算结果。实践证明,软件可信程度高,具有较高的工程应用价值。

Study and Development on Simulation Software for "Sichuan-to-East Gas Transmission" Pipeline

With the initiation of such important national natural gas pipeline project as Sichuan to East gas transmission, to develop pipeline simulation software with independent intellectual property is on the trend. On the background of "Sichuan to East Gas Transmission Project", this paper adopts continuity equation, momentum equation, energy equation and SHBWR equation to develop static and dynamic mathematical model to simulate the gas flow in pipelines more actually, which are numerically solved respectively by four order Runge Kutta method and implicit center finite difference method. In addition, many operational modes and models on static and/or dynamic calculation of peak shaving capacity and dynamic forecasting are analyzed. Based on data base and graphic programming, the Sichuan to East Gas Transmission Simulation Software is developed by C++ Builder 6.0 in which the advantage of both industrial control software and calculation software are included effectively. The core program as well as its calculation results has been verified with software TGNET and some designing materials. It has been proved by practice that the software is credible with good values for project application.