大型天然气管网系统可靠性

Reliability of large-scale natural gas pipeline network

随着中国国民经济的快速发展,天然气需求量不断扩大。天然气管网作为连接资源与市场的纽带,已成为保障国民经济的生命线。中国拥有世界上最复杂、输送任务最艰巨的天然气管网系统。现有基于单一或少数管道的运行管理方法已不能满足大型管网系统安全生产需要,必须寻求更为科学合理的管理思路。本文首次提出大型天然气管网系统可靠性概念,分析了大型天然气管网系统可靠性面临的3个挑战:量化大系统可靠性、评价分系统(单元)可靠性、建立大系统与分系统之间的关联。同时,对大型天然气管网系统可靠性框架进行了初步设计,并针对中国天然气管道行业现状,提出大型天然气管网可靠性增强方案。

With rapid development of China＇s national economy,demand for natural gas continues to expand.Natural gas pipeline,which works as the connection between resources and market,will serve as a lifeline to make sure the sustainable development of the national economy.China has the world＇s most complex and busiest natural gas pipeline system.However,due to fact that the existed methods which based on single pipeline or small-scale pipeline network are not capable of providing sufficient technical surpport for the safety and safety management of the large-scale pipeline network,it is of urgent need for us to look for a more scientific and rational management concept.In this paper,the idea of reliability of large-scale natural gas pipeline network is first proposed.The challenges that large-scale natural gas pipeline network may face are analyzed thereafter,induding： the quantification of reliability of large-scale natural gas pipeline network,the evaluation of reliability of system and also the connection between overall system and unit system.Meanwhile,a preliminary design of large-scale natural gas pipeline network is given and a method to enhance reliability of large-scale pipeline network is proposed based on the facts of China＇s natural gas pipeline network.