SIMULATION OF MINIMIZING ELECTRIC POWER USAGE IN THE FUTURE OF A WATER DISTRIBUTION SYSTEM

Abstract

 Environmental issues need to be addressed urgently in many different fields. In the water supply field, various measures are being taken to save energy. Of particular importance is optimization of the water supply control and management plan, given the large amount of electric power usage for transporting water. In this study we proposed an optimization model for the water distribution system of the Tokyo Bureau of Waterworks, aimed at reducing electric power usage, and attempted a simulation. First we conducted studies on a virtual network based on part of the target area. We clarified the impact on electric power usage from differences in the operating conditions (initial stored water amount and rotation timing) of the distribution reservoir. Second, we studied the network planned for the future, with its pipeline redundancy and installation of new water supply stations. We showed how, applying the latest improved model, a balance can be achieved between ensuring stable water supply and reducing energy usage.