一种城市排水系统水位控制仿真算法

A Simulation Algorithm of Water Level Control for Urban Drainage Systems

为了避免因水位过高而外溢,必须对城市排水系统各级泵站的运行进行合理调度。提出一种城市排水系统水位控制仿真算法,以构建辅助等效排水系统。假定各溢水口被封堵且各封堵口的水压不超过某给定值,对应于原系统水流实际不外溢的条件,辅助排水系统的行为可完全对应于一个各结点输入电量已知的等效直流电路网络,通过考虑其相应结点处的水位控制即可实现原系统中在相应结点水流不外溢的目的。将水系统结构用有向图结构表示,采用灵敏度法根据调整泵的扬程设置,给出了一个对水压进行控制的迭代仿真算法。该算法应用于常州市排水管网,效果良好。

The prevention of flooding and overflow of polluted water is the most important work for an urban drainage system. To avoiding the water levels are higher than the given upper limits, an equivalent drainage system is constructed in which each node is supposed to be closed rather be opened. This equivalent drainage system would be simulated with an equivalent direct current circuit. The voltages would be controlled lower than given upper limits to ensure that the water levels would not surpass their upper limits. The drainage system is represented by a directed diagram. Based on the idea of parametric sensitivity, a simulation algorithm was worked out for the control of water levels through the regulation of the pump＇ s lifts. The algorithm was applied to the drainage network of Changzhou with good results.