天然气管网管存调控技术

为了保障天然气管网的安全平稳运行,对天然气管网管存的调控技术进行研究。结合目前天然气管网的生产运行经验,阐述了管存的分类、控制原则及控制标准,从春秋季销售、冬夏季保供、气量分配及预测事故管道生存时间4个方面对管存的调控技术进行详细分析。结果表明:针对春秋季销售周不均匀性的特点,应主动控制管存均匀变化;为保供冬夏季用气,应将管存提升至应急高管存或最高管存;利用管存的控制区域,可以对天然气管网气量进行合理分配;根据天然气管道的低管存限值,能够预测事故管道的生存时间。(图4,参23)

Control technique for linepack of natural gas pipeline network

The control technique for linepack of natural gas pipeline network has been studied to ensure the safe and stable operation of gas pipeline network.The classification,control principle and control standard of linepack were elaborated based on the current production and operation experience of natural gas pipeline network,and the control technique for linepack was analyzed in detail from four aspects:selling in spring and autumn,guaranteed supply in winter and summer,gas distribution and prediction of accident pipeline survival time.The results suggest that linepack should be actively controlled for a uniform change according to the weekly inhomogeneity sale in spring and autumn,and it should be raised to the emergencyhigh level or the highest level to ensure the gas supply in winter and summer.The gas from the natural gas pipeline network can be reasonably distributed based on the control area of the linepack,and the survival time of the accident pipeline can be predicted according to the low linepack limit of natural gas pipeline.