基于特性曲线延拓处理的压缩机组合方式  

Optimization of compressor combination modes based on the extension of characteristic curve

作　　者：柳建军[1] 刁洪涛 靳毅 康阳[1] LIU Jianjun DIAO Hongtao JIN Yi KANG Yang(PetroChina Pipeline R ＆ D Center/CNPC Key Laboratory of Oil ＆ Gas Storage and Transportation PetroChina Beijing Oil and Gas Control Center No. 2 Engineering Project Management Department of PetroChina West Pipeline Co. Ltd)

机构地区：[1]中国石油管道科技研究中心/中国石油天然气集团公司油气储运重点实验室 [2]中国石油北京油气调控中心 [3]中国石油西部管道公司二工程项目管理部

出　　处：《油气储运》2016年第9期942-945,979,共5页Oil & Gas Storage and Transportation

基　　金：中国石油天然气股份有限公司科技攻关项目"大型天然气管网优化技术及应用研究";2013B-3410

摘　　要：建立天然气管网稳态运行数学模型时,表述压缩机组合方式需要引入0-1整型变量,导致求解难度增大。为此,基于样条函数的连续可导性,采用函数延拓的方法,将压缩机压头曲线光滑延拓到压缩机最大转速至零的区间上,将天然气管网稳态运行优化数学模型从混合整数非线性优化转换为连续非线性优化。研究结果表明:通过延拓压缩机特性曲线,在不影响压缩机组合方式物理意义的情况下,有效去除了优化模型中的整型变量,提供了一种降低天然气管网稳态运行优化数学模型求解难度的途径。When establishing a mathematical model for steady-state operation of natural gas pipeline network, it is necessary to introduce 0-1 integer variables to describe the compressor＇s combination mode, thereby increasing the solving difficulty. To solve this problem, the compressor head characteristic curve is smoothly extended to the interval between the maximum compressor speed and zero, and the optimization of the mathematical model for steady-state operation of natural gas pipeline network is converted from mixed-integer nonlinear optimization to continuous nonlinear optimization by means of the function extension based on the continuous derivation of spline function. It is shown that the integer variables of optimization model can be removed effectively by extending the compressor characteristics curve while the physical significance of the compressor combination mode is not influenced. Obviously, it provides a way to reduce the solving difficulty of the mathematical model for steady-state operation optimization of natural gas pipeline network.

关 键 词：压缩机 组合方式优化 样条函数 特性曲线延拓 混合整数非线性优化 

分 类 号：TE798[石油与天然气工程]