灌区非均匀给水系统中分区给水优化的遗传算法

Genetic algorithms to optimize the uneven subregional water supply in water supply system in irrigated areas

当灌区采用分区给水时,可以提高供水能量的利用率,优化的分区给水方案可在相同的投资、成本下获得最大的经济效益。该文在前人的研究基础上进一步分析了供水所需总能量的组成和提高供水能量利用方法。建立了基于改进的实码加速遗传算法的优化目标函数模型,以此来确定供水系统的最优分区方案。新方法具有计算准确、快速,通用性强等优点,可在灌区非均匀给水分区优化中得到广泛应用。

Adopting subregional water supply in unevenly irrigated areas can raise water supply energy utilization efficiency. The largest economic results through optimized subregional water supply scheme can be obtained under the condition of the same investment and cost. This article further analyzes the total energy composition and the method to raise the energy use efficiency for water supply on the basis of research of predecessors. The optimization object function model based on the improved real coded accelerating genetic algorithm (RAGA) was developed to determine the optimal subregional scheme of the water supply system. The improved RAGA has some advantages such as accuracy and rapidity of calculation, good general-purpose usage. Therefore, it can be used extensively in optimization of subregional water supply in large irrigated areas.