Optimal Dispatch Model In Municipal Water Supply System

Main contents for optimal dispatch of pump stations in municipal water supply system were introduced, and delved the model of water prediction, analysis of water supply reliability, water distribution system and optimal dispatch.In order to overcome the present numerous methods for water prediction and the complex model, which make the actual selection of prediction methods more difficult. According to the changing characteristic of water and analysis theory of auto correlated formation, the data formation of time series was discerned, optimal selection methods for the model of water prediction were raised. The prediction precision was advanced and can reach the engineering needs. From the definition of reliability, the concrete computing methods for optimal allocation of reliability were put forward, the corresponding mathematical model was founded. Because the microscopic model needs the distinct structure relation, the numerous input data and the long time of computing, the macroscopic model was used. After analyzing methods for the nodal pressure, the corresponding optimal program was drawn up.Using minimum water supply cost as objective function, the secondary series of optimal dispatch model was set up. The optimal combination of fixed-speed pump and the optimal range of rate and flow in varied-speed pump station were elaborated. Applying these methods for water supply system in Yuci city, the result show it can save energy,which illustrate this optimal dispatch model was successful.