基于DDA和PDA模型的供水管网管段重要性计算研究  

Comparative study of calculation methods for link importance in water distribution network based on DDA and PAD models

作　　者：周巍巍[1] 李树平[1] 侯玉栋[1] 黄璐[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《给水排水》2013年第3期154-157,共4页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07403-001)

摘　　要：介绍了如何确定单管段故障状况下供水管网满足用户的供水比例,根据两种管网水力分析模型:需水量驱动分析(DDA)模型和考虑管网节点压力与实际出流量关系的压力驱动分析(PDA)模型,并引入管段重要性的概念,提出编制管段重要性计算程序的步骤。通过案例分析两种模型,结果表明在管网压力不足情况下,采用PDA模型计算管段重要性值更具合理性。It is of great importance to determine supply proportion under a pipe failure event for the operation and administration of water distribution systems. According to the definition of link importance （LI）, a method of computer programming is proposed based on two different distribution network hydraulic analysis models： Demand-driven analysis （DDA）model and Pressure-driven aalysis （PDA） model in this paper, while the latter combines the relationship between nodal pressure and outflow. A network example is used for two models to analysis, the results show that the LI values from PDA model is more reasonable in situation when the network pressure is insufficient.

关 键 词：供水管网 管段重要性(LI) 需水量驱动分析(DDA) 压力驱动分析(PDA) 

分 类 号：TU991.36[建筑科学—市政工程]