The optimization of location and control of pump stations in urban drainage system

To reduce the overflow of the wastewater and high expense caused by redundant arrangement of the stations of pumps in the urban drainage system, a hybrid logistic optimization model is proposed to choose the locations of pump stations and the corresponding optimal control algorithm is also developed in this paper. The inflow in the conduit from rainfall is estimated based on rainfall-runoff model and meanwhile the performance of the pump is described by the nonlinear pump model. After determining the optimal pump locations by the optimization algorithm, this paper further studies the energy saving optimal control of the system. When taking both the position and the working situation of the pumps into consideration, the energy consumption of the system and the frequency of overflow can be brought down effectively.