Abstract
In this paper, we propose a dynamic cost selection method in the minimum cost flow optimization for wide-area water supply networks. We formulate the water flow on the multi-layered networks, considering the storage of all the reservoirs. Piecewise linear cost functions are employed so that the cost function can represent open and closed pipelines flexibly. With this characteristic of the piecewise linear cost function, various kinds of networks can be represented without changing the original network model. The optimization is executed under the selected set of cost functions. The simulated plans under the real data in a certain city show the advantages of the proposed method, in terms of confirming the operating conditions and saving water, even in emergency as well as the normal situations.
