Scheduling Optimization of a Multiple Source Water Supply System

論文發表人：鄭蔚辰(加州大學洛杉磯校區土木研究所博士班)

 

http://www.agu.org/meetings/fm06/

 

本研究針對水資源系統發展一個全新的最佳配水及排程模式。模式中以供水節點、受水節點及供水路徑描述水資源之配水系統，取代以往以水源節點、需求節點及供水箭線所描述之配水系統。此種模式具有下述兩項優點: (1) 此模式可同時決定配水量、配水排程及供水之路徑。(2) 此模式用一組供水節點及受水節點描述水庫以反應真實世界中水庫不僅可以供水亦可受水之真實情況。因具上述之特性，此模式不僅可求出最佳由供水節點至受水節點之供水量，亦可求出最佳相對應之供水路徑。因此，此模式與一般模式僅能求解最佳箭線上之配水量不同，此模式所求出的最佳結果中包含了供水量、受水量、配水排程及在配水系統中詳細的配水資訊。在本研究中，我們採用一個假設的系統證明了此模式確實具備上述之能力，目前本研究正將此模式應用於實際的南加州之配水系統，此一實際配水系統供應南加州一千八百萬的人口所使用。

 

A new flow path model is developed for scheduling optimization of a water distribution system. The model characterizes a water distribution system by source nodes, receiving nodes, and flow paths. There are two advantages of this approach. First, linear constraints can be used to simultaneously determine the quantity and its associated flow path of water supply from a source node to a receiving node. Second, the model represents storage/reservoir as a source node as well as a receiving node simultaneously. This means that the model considers storage/reservoir as both a source and a demand at the same time to reflect the real-life situation. Therefore, the model optimizes not only the sources to each demand node but also their associated flow paths for supplying the water. This characteristic leads to the optimum solution that contains the optimal scheduling results and detailed information of the water distribution in the physical system. The quantity and its associated flow path in the water distribution system are explicitly represented in the results rather than merely an optimized total flow quantity in each link. In this study, a hypothetical scheduling problem is first used to test the proposed methodology. The results show that the flow path model has the ability to optimize both the quantity as well as the flow path. An application of the model is being made to the water distribution system of the Metropolitan Water District of Southern California which supplies water to 18 million people in Southern California.
DE: 1847 Modeling
DE: 1857 Reservoirs (surface)
DE: 1880 Water management (6334)
DE: 1884 Water supply
SC: Hydrology [H]
MN: 2006 Fall Meeting