天然气互联互通管道工程的经济效益评价

Economic benefit evaluation on the natural gas interconnection pipeline project

作为国家重点推进的工程项目,互联互通工程在强化资源交换、有效缓解我国北方用气紧张局面等方面发挥了重要的作用,但目前对这类工程项目尚欠缺具体可行的经济效益评价方法。为此,根据当前互联互通工程建设项目的特点,将互联互通管道功能分为供气、转供和安保等3种功能,基于长输管道项目经济评价方法、地下储气库调峰输气经济效益评价方法和安全经济效益量化评价方法,分别建立了3种功能下互联互通工程项目的经济评价模型,并以中国石油天然气集团有限公司承建的闽粤支干线互联互通工程为例,进行了经济效益指标测算。测算结果表明:①该互联互通管道工程在供气、转供和安保3种功能下的财务内部收益率分别为10.57%、11.83%和1.67%;②工程整体功能的项目财务内部收益率为6.49%,高于6%的基准收益率,项目整体从财务角度具有可行性。结论认为,在对互联互通管道工程进行经济效益分析时,应分别测算上述3种功能下的经济效益,再进行整合,测算并评价工程的总体经济效益。

As a key state engineering project,the interconnection pipeline project plays an important role in strengthening resource exchange and effectively alleviating the gas shortage in North China.At present,however,there is no feasible economic evaluation method for such an engineering project.In this paper,the functions of gas pipeline interconnection were divided into three parts,i.e.,gas supply,gas transfer,and gas security,according to the characteristics of the interconnection construction project.Then,corresponding to these three functions,three economic evaluation models of the interconnection engineering project were established based on the economic evaluation method of long-distance pipeline projects,the economic benefit evaluation method of UGS peak shaving and gas transmission and the quantitative evaluation method of safety economic benefit.Finally,these models were applied to the interconnection project of the Fujian-Guangdong branch and trunk pipelines contracted by PetroChina for the economic benefit evaluation.And the following evaluation results were obtained.First,the financial internal rate of return of this gas interconnection project is 10.57%,11.83%and 1.67%corresponding to the function of gas supply,gas transfer and gas security,respectively.Second,the financial internal rate of return of the whole project is 6.49%,which is higher than the reference rate of return of 6%,indicating that on the whole,this project is financially feasible.In conclusion,when the economic benefit of the natural gas interconnection pipeline project is analyzed,the economic benefit of gas supply,gas transfer and gas security shall be firstly evaluated respectively and then integrated to evaluate the overall economic benefit of the whole engineering.