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天然气集输管网的参数优化设计模型，属于非线性离散化最优组合问题，且目标函数具有多峰性，往往存在局部极小点，遗传算法对处理此类工程设计问题具有较大的优越性。为此，以管道建设费用为目标函数，以管道的稳态分析、各节点的流量、压力及管道的压力限制等为约束条件，建立了天然气集输管网的参数优化设计模型。采用遗传方法求解，并给出了计算机软件算法框图。利用该算法可以提高全局收敛性，从而加快系统的求解速度，并由此得到问题的最优解，是一种可取的优化算法。

Parameter-optimized Design of Gas Gathering and Transmission System by Heredity Solution

The parameter-optimized design model of gas gathering and transportation system is set up for the optimum combination of non-linear discretization. And the object function has the multiple-peaked feature and some local minimum points. The heredity solution has more superiority to deal with this kind of engineering design problems. Taking the construction expenses as the object function, and the steady analysis of the pipeline, the pressure and flow-rate of every node, and the pressure limitation of the pipeline as the constraint conditions, the parameter-optimized design model is developed for the gas gathering and transmission system. The heredity method is adopted for solution. And the computer solution figure is provided in this paper. Using this method can improve the global convergence so that increase the solution speed and get the optimum solution. Therefore, heredity solution is an advisable optimization method.