Therefore , it is essential to optimize the water network for reducing the paving and operation cost and for improving the competence of water utilities 因此，经济合理地进行给水管网优化设计成为降低城市给水管网建造及运行费用，提高供水企业竞争力的重要一环。
A gis of urban water distribution system and analysis system under gis environment are introduced , including its design thought general structure and key technology 本文介绍了城市给水管gis系统及gis环境下给水管网工况分析系统的设计思想、总体结构和关键技术。
After hydraulic calculation analysis , design of optimal models , and computer analysis of water supply networks , a computation program for optimal design was wrote by ipga . some improvement was made on the algorithm 通过对给水管网水力计算分析、给水管网计算机分析基础的研究，建立管网优化模型，用ipga法编制了城市给水管网优化计算程序，并对算法作了一些改进。
The method comprises of three components , namely , prediction model for hourly water of the entire network , model of water distribution system and optimization model . hourly water demand prediction of distribution system was mainly studied 本文介绍了城市给水系统优化调度技术的主要内容，并对优化调度的基础，如用水量预测模型，管网模型和优化调度模型进行了深入的研究。
Main contents for optimal dispatch of pump stations in municipal water supply system were introduced , and delved the model of water prediction , analysis of water supply reliability , water distribution system and optimal dispatch 本文介绍了城市给水系统优化调度的主要内容，并对优化调度的关键内容如用水量预测模型、供水可靠性分析模型、管网的网络模型及优化调度模型进行了深入系统的研究。
Based on the optimal design methods of city water supply networks from home and abroad and problems faced by present water supply networks " system , this paper did some research on ipga and its application in optimal design of city water supply networks 文章在概述城市给水管网优化设计方法在国内外的发展现状及现行给水管网系统所面临的问题的基础上，对城市给水管网优化设计模型应用ipga法求解进行了探索。
On one hand , urban water network is a bridge linking water - works with consumers . on the other hand , water network accounts for 50 70 percent of total water - supply systems budget , and takes about 30 50 percent of energy - consumption of total water - supply systems 一方面城市给水管网是连接水厂与用户的“桥梁” ，另一方面城市给水管网的投资占整个供水系统的50 70 ，同时也占用供水系统约30 50的能耗。
The optimization of water networks must meet the hydraulic constrains . so it is necessary to combine the optimization of water networks with the hydraulic analysis , and the performance of hydraulic analysis affects the optimization of water networks directly 城市给水管网优化必须满足各种水力约束条件，故在应用遗传算法对城市给水管网进行优化的过程中必须结合管网的水力计算，水力计算结果的好坏直接影响到优化结果的好坏。
This study is aimed to investigate the solutions for the modeling of optimal design of urban water supply networks using annealing and genetic algorithm based on the description of development of both the urban water supply optimal design method and modern optimization computation method 本文在概述城市给水管网优化设计方法与现代优化计算方法的发展的基础上，对城市给水管网优化设计模型应用模拟退火算法和遗传算法求解进行了探索。
It carries out hydraulic computation and analysis of water supply networks and constructs the computation programs for the optimal designing of urban water supply networks using annealing and genetic algorithm . some improvements have also been achieved in the algorithm suitable for network optimal design 通过对给水管网水力计算分析、管网优化设计的研究，用模拟退火算法及遗传算法编制了城市给水管网优化设计的计算程序，并作了适合管网优化设计的算法改进。
