基于综合水龄指数评价的供水管网优化调度

Optimal Scheduling of Water Supply Network Based on Node Water Age

摘要:

研究了通过计算节点平均水龄分析该地区供水管网的水质状况的方法，在此基础上，提出供水管网综合水龄指数评价指标，并基于该指数构建管网水力优化调度模型，采用遗传算法实现优化问题的求解，并以江苏某镇城乡统筹供水管网为实例进行了应用.结果表明，水力优化调度能够改善管网的综合水龄情况，尤其是对于流量较大的节点有明显的效果，但是对于管网末端水量相对较小节点，则需要结合水力调度以及管段冲洗等方式来改善管网水龄情况.

关键词:供水管网; 节点水龄; 优化调度; 遗传算法

Abstract:

A water quality model for the water distribution network of a town MD was established with EPANET2. Water ages of the nodes were analyzed to evaluate the water quality condition of the water supply network through the simulation. Then an optimal scheduling model based on the comprehensive node water age index was proposed and solved with genetic algorithm method. The results of application the optimal model to a county water distribution network indicate that the hydraulic optimal scheduling is able to improve the comprehensive water node age, especially for the nodes with big water demand. While for nodes with relatively small flow located at the ends of water supply network, water distribution system flushing is still necessary to ensure the .tap water quality at the end of the network.

Key words:water supply network; water age; optimal scheduling; genetic algorithm