长距离输气管道的最优输量研究

对已建成的长距离输气管道,可通过增设压气站的方法来增加管道的输量,随着压气站数的增加,管道的输量增大,管道的经济效益增加,但当输量增大到一定值时,管道的经济效益要降低,因此,长距离输气管道存在着一个使管道的经济效益最大的最优输量。以内部收益率为评价指标,分别计算各个方案的内部收益率,作出内部收益率与管道输量的关系曲线,内部收益率最大的方案所对应的输量就是长距离输气管道的最优输量。最后以一条输气管道为例进行了实例计算。

Study of Optimal Flow about Long Distance Gas Pipelines

It is feasible to increase the flow of gas pipelines by installing compressor stations in the existing long distance nature gas pipelines.The flows of gas pipelines will increase with the number of compressor station,and economic benefit of pipelines will increase,too.But when the flow of gas pipelines increase to a certain numeral value,the economic benefit of pipelines will depress.Therefore,long distance nature gas pipelines have an optimal flow,so that the economic benefit of pipelines is maximal.This paper used the internal rate of return as evaluating indicator,calculated the internal rate of return of every projects,and found out the relation curve about the internal rate of return and the flow of gas pipelines.The flow of the project is the optimal flow of gas pipelines when the internal rate of return of the project is maximal.And by taking gas pipeline the as an example,the calculating was done.