大型天然气管道稳态运行优化研究

doi:10.11885/j.issn.1674-5086.2018.12.12.01

西南石油大学学报(自然科学版) ›› 2019, Vol. 41 ›› Issue (5): 150-160.DOI: 10.11885/j.issn.1674-5086.2018.12.12.01

大型天然气管道稳态运行优化研究

刘恩斌^1,2, 匡建超², 吕留新³, 刘渊⁴, 张璐⁵

1. 西南石油大学石油与天然气工程学院, 四川成都 610500;
2. 成都理工大学能源学院, 四川成都 610059;
3. 昆山利通天然气有限公司, 江苏昆山 215300;
4. 重庆页岩气勘探开发有限责任公司, 重庆渝中 404100;
5. 乐山市燃气有限公司, 四川乐山 614000

收稿日期:2018-12-12 出版日期:2019-10-10 发布日期:2019-10-10
通讯作者: 刘恩斌,E-mail:sunriselebpsb@163.com
作者简介:刘恩斌,1980年生,男,汉族,四川遂宁人,教授,主要从事油气管网仿真与优化技术、瞬变流、计算流体力学等方面的科研教学工作。E-mail:sunriselebpsb@163.com;匡建超,1962年生,男,汉族,四川射洪人,教授,博士生导师,博士,主要从事石油与天然气开发工程和管理科学与工程方面的研究工作。E-mail:kjc@cdut.edu.cn;吕留新,1993年生,男,汉族,江苏镇江人,硕士研究生,主要从事天然气长输管道能耗优化与CFD方面的研究工作。E-mail:allenllx@163.com;刘渊,1980年生,男,汉族,四川隆昌人,工程师,主要从事油气田地面工程建设方面的研究。E-mail:liuyuan2@petrochina.com.cn;张璐,1993年生,女,汉族,四川乐山人,硕士研究生,主要从事城市燃气方面的研究工作。E-mail:13648010939@163.com
基金资助:
四川省应用基础研究（2019YJ0352）；四川省自然资源厅科研项目（KJ-2019-11）

Optimization of Steady Operation of Large Scale Natural Gas Pipelines

LIU Enbin^1,2, KUANG Jianchao², Lü Liuxin³, LIU Yuan⁴, ZHANG Lu⁵

1. School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Energy School, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
3. Kunshan Litong Natural Gas Co. Ltd., Kunshan, Jiangsu 215300, China;
4. Chongqing Shale Gas Exploration and Development Co. Ltd., Yuzhong, Chongqing 404100, China;
5. Leshan Gas Co. Ltd., Leshan, Sichuan 614000, China

Received:2018-12-12 Online:2019-10-10 Published:2019-10-10

摘要/Abstract

摘要： 针对天然气长输管道压缩机站运行能耗高的问题，基于动态规划法，建立以大型天然气管道压缩机站总能耗最低为目标函数的管道运行优化模型，确定压缩机开机数量和出站压力为优化变量。根据此优化模型，求解西气东输一线管道算例，该算例管道规模庞大（含22座压缩机站和32台压缩机，管线全长3 840 km，设计年输量为170×10⁸ t），优化模型可在60 s内求解得出结果，动态规划法求解快速有效。根据优化结果，优化运行方案比运行日报表中增加了2台压缩机的开机数量，管道总压降减少了3.40 MPa，燃气轮机组平均效率提高了4.234%，电驱机组平均效率提高了4.875%，压缩机总功率减少187 20.38 kW，生产单耗减少16.24 kgce/（10⁷ Nm³·km），可大幅降低西气东输一线管道的总能耗，证明了所建优化模型的正确性和可行性。

关键词: 天然气长输管道, 管道运行优化, 压缩机, 动态规划, 能耗

Abstract: To address the high energy consumption of the compressor station of natural gas long-distance pipelines, a pipeline operation optimization model was established based on the dynamic programming method. The optimization variables are the compressor starting quantity and the outbound pressure. The objective function is the lowest total energy consumption of largescale natural gas pipeline compressor stations. Using this model and using the pipelines of the West-East Gas Pipeline I as an example, the operation optimization results of the 22 compressor stations and 32 compressors for the entire line were solved within 60 s, which demonstrates that the dynamic programming method is fast and effective. An analysis of the optimization results indicates that the optimized operation scheme has two more compressors compared with the actual operation scheme. The total pressure drop of the pipeline is reduced by 3.40 MPa, the average efficiency of the gas turbine unit is increased by 4.23%, and the average efficiency of the electric drive unit is increased by 4.88%. The total compressor power is reduced by 18 720.38 kW, and the production unit consumption is reduced by 16.24 kgce/(10⁷ Nm³·km). The optimized operation scheme can greatly reduce the total energy consumption of the West-East Gas Pipeline I, thus verifying the correctness and feasibility of the optimized model.

Key words: long-distance natural gas pipeline, pipeline operation optimization, compressor, dynamic programming, energy consumption

中图分类号:

TE832

刘恩斌, 匡建超, 吕留新, 刘渊, 张璐. 大型天然气管道稳态运行优化研究[J]. 西南石油大学学报(自然科学版), 2019, 41(5): 150-160.

LIU Enbin, KUANG Jianchao, Lü Liuxin, LIU Yuan, ZHANG Lu. Optimization of Steady Operation of Large Scale Natural Gas Pipelines[J]. 西南石油大学学报(自然科学版), 2019, 41(5): 150-160.

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大型天然气管道稳态运行优化研究

Optimization of Steady Operation of Large Scale Natural Gas Pipelines

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