针对天然气管道管存峰谷幅度较大造成管道运行不平稳的突出矛盾,分析了天然气管道的管存参数,提出了合理的管存控制方法进行调峰,采用管段末端管存进行日调峰,全线储气进行周调峰；提出了目标管存的确定方法,明确了天然气管道管存应急Ⅰ级和Ⅱ级的划分标准,计算出了西气东输二线管存应急管理区域并给出了西气东输二线试行实例。研究成果对天然气管道平稳安全运行具有指导意义。

Aimed at the unsteady pipeline operation caused by the gap between peak and valley of thepipeline inventory, the paper studies the pipeline inventory parameters of the natural gas transmission pipeline and proposes the appropriate peak-shaving techniques. Based on the peak-shaving principles, like the tail end pipe for gas storage can be applied as daily peak-shaving solution, the pipeline inventory along the whole line can be applied as weekly peak-shaving solution. This paper proposes the determination methodfor objective pipeline inventory, describing the calculation method of level I and II of pipeline inventory for emergency, figuring out the appropriate floating range of pipeline inventory and application case on the SecondWest-to-East natural gas transmission pipelinefor trial implementation. The results have guiding significance for reliable and steady operation of natural gas pipeline.