燃气管网水力工况模拟系统的研究与开发

Development of Hydraulic Regime Simulation System for Gas Pipeline Network

随着燃气管网系统越来越复杂,管网水力运行状况的研究难度也随之增大。为了精确掌握管网中各类气源的供气范围及压力情况,开发一个基于有限元节点法的系统用来模拟管网运行时的水力工况情况。系统采用改进遗传算法辨识当量粗糙度参数后,将所得参数辨识真实值代入水力计算程序,进而得出气源供气范围及压力数据值,所得实验值结果较为精准,与真实值相差小;为管网的优化设计、运行调度和自动监控提供了理论依据,有助于提高管网运行的可靠性、稳定性和经济效益。

With the increasing complexity of gas pipeline system,it is more and more difficult to study the hydraulic operation of pipeline networks.In order to accurately understand the supply range and pressure situation of various gas sources in the pipeline network,this paper proposes to develop a system based on finite element node method to simulate the hydraulic regime of the pipeline network during operation.An improved genetic algorithm is used in the system to identify equivalent roughness parameters,the identified actual values of which are brought into the hydraulic calculation program,and the gas supply range and pressure data values are obtained.The experimental results obtained are relatively accurate and have a small difference from the actual values.The proposed system provides a theoretical basis for optimal design,operation scheduling and automatic monitoring of pipeline network,and helps to improve the reliability,stability and economic benefits of pipeline network operation.