给水管网的半理论增广混合回归模型

Semi-theoretical augmented mixed regression model of water distribution network

以给水管网的调度优化为应用背景,分析了配水系统的水力学特点,建立了管网的供水泵站与管网中节点水压之间关系的半理论回归模型,并指出水源泵站水头对节点水压的影响系数之和接近于1.在此基础上,建立了考虑管网周期相关特性的半理论回归模型和半理论的增广混合回归模型.利用实际管网的实测数据进行了模型参数识别.分析了不同模型的模拟效果,结果表明所有模型所揭示的规律基本上符合理论分析,半理论的增广混合回归模型是一种能比较充分地反映水源与节点之间水头呈线性关系的模型.

The hydraulic characteristics of water distribution network were analyzed. It was pointed out that the sum of the influence coefficients of pressure between pumping station and junction of pipes was very closed to 1. Theoretical analysis yielded a series of macroscopic models of water distribution network, which included semi-theoretical linear regression model, semi-theoretical region-period linear regression model and semi-theoretical augmented mixed regression model. Practical application of the models show that these models accord with the laws that the analysis revealed and can describe linear relation between pumping station and junction of pipes effectively.