西气东输改扩建工程的经济输量界限研究

A Study on Economic Output Limits of the Reconstruction and Expansion of West-East Gas Pipeline Project

目前西气东输为满足下游用户对天然气用气量的需求,对一些干线阀室、站场进行改扩建,以期增加供气量。本文以西气东输改扩建项目为研究对象,运用技术经济学原理,结合改扩建项目特殊性,建立了项目总投资、总收入与总成本的关系式,得到了关于经济输量界限的计算模型。根据西气东输以往改扩建项目的经验数据和参数值,分别对模型中的参数进行赋值,最终得到经济输量的界限值。经济输量界限值概念的提出,对以后西气东输改扩建项目的决策及未来公司投资和效益的研究将发挥重要的作用。

Currently,the volume of natural gas through the pipes of some of the sub-transmission stations in economically developed areas can not meet the needs of downstream users. In this context,upgrading valve chambers to sub-transmission stations becomes urgent. By using the principles of technical economics,and with consideration of the nature of the expansion project,we establish the formula of total investment,revenue and cost and obtain the calculation model of economic output limits. Basing on past data and parameter of the West-East expansion project and adding evaluation to the model,we calculate the amount of economic output limits. The concept of economic output limit will play an important role in decision making in West-East expansion project.