多气源天然气管网掺氢位置研究

Research on the location of hydrogen mixing in multi-source natural gas pipeline networks

利用相对完善的天然气管网输送氢气,是现阶段实现氢气低成本运输的有效途径之一。为了确定多气源天然气管网的最优掺氢位置,文章采用沃泊热值指数、A.G.A指数、韦弗指数3种判定方法分析了氢气和天然气的互换性,确定了满足天然气互换性要求的最大掺氢比例。为了满足天然气管网掺氢后的水力工况,采用Pipeline Studio软件对掺氢后的天然气管道和某20节点天然气管网系统的运行工况进行仿真,从天然气管网节点压力和节点气质两个方面分析了掺氢比例对管网输送工况的影响,从而确定了天然气管网中的最优掺氢位置。研究结果表明:不同判定方法对掺氢比例的要求不同,需要综合考虑多种判定方法允许的掺氢比例;某20节点多气源天然气管网系统的最优掺氢位置为节点N14。

The utilization of a well-established natural gas pipeline network to transport hydrogen presents a promising avenue towards low-cost hydrogen transportation.To determine the optimal location for hydrogen bended in a multi source natural gas pipeline network,the Wolper calorific index,A.G.A index and Weaver index were employed as three determination methods to analyze the interchangeability of hydrogen and natural gas.The aim was to determine the maximum hydrogen bended ratio that meets the requirements of natural gas interchangeability.Additionally,Pipeline Studio software was utilized in this study to simulate the hydraulic conditions of the gas pipeline network after hydrogen bended,to meet the hydrodynamic conditions of the Belgian natural gas pipeline network.The findings of this study reveal that the requirements for hydrogen bended ratio differ amongst the various determination methods,and the permitted hydrogen bended ratio should be taken into consideration.The optimal hydrogen bended location for the Belgian natural gas pipeline network was identified as node 14.