本文所提出的网络优化设计法,以系统使用年限(即寿命周期)总费用的可变费用最低为目标函数,以系统网络运行方程为约束条件,组成一个非线性的数学规划,使系统优化设计问题转化为求解一个数学规划问题。文中对目标函数的建立,约束方程的确定以及最优参数的解算都作了论述,编制了计算机解算程序,并通过实例与其它设计方法作了比较. The network optimization design method proposed in this paper uses the lowest variable cost of the total cost of the system lifetime (ie, the life cycle) as the objective function, and the system network operation equation as the constraint condition to form a nonlinear mathematical plan to optimize the system design. The problem translates into solving a mathematical programming problem. In this paper, the establishment of the objective function, the determination of the constraint equation and the solution of the optimal parameters are all discussed. The computer solver program is compiled and compared with other design methods through examples.