Remote Control Structure Design And Implement Of Distributed Pumping Station

Urban drainage systems are complex system with wide geographical distribution and throughout the entire city. Because of the inflow of sewage pumping station has characteristics of nonlinearity, time-delay and randomicity etc, unreasonable emission control method will cause high energy consumption of pumps, even pollution of sewage overflow. Since entering the 21st century, environmental protection and energy conservation have been always paid much attention. Safe and efficient operation of sewage pumping station have been received more recognition.Based on the Sewage pipe network system's characteristics, web-based remote control system of the distributed pumping station was discussed and analyzed in details. First, based on the proposed the security and efficient operation requirements of the drainage system, a host industrial computer network control system and a local back-up PLC control system was built which were both independent and mutually connected. The control system's network structure was designed, the working principle of modules was discussed, and Practicable solutions aiming at the involved problems encountered in the process was proposed. Second, the paper discuss the energy-saving mechanism of the sewage pumping station, optimization model for urban drainage systems was proposed. Based on the sub-frequency control strategy and the improved co-ordination and network optimization control strategy, filed running test was carried out. The result of the field tests proved the effectiveness of the strategy. Then, a novel comprehensive fault diagnosis method based on video monitoring was presented aiming at the problem of diagnostic failures caused by sensor fault. The fault diagnosis can be made using the correlative key parameters and real-time operation data of the urban drainage system. Application of the system verified the feasibility and effectiveness of the method, especially under the abnormal operating conditions. Finally, an interface monitoring system of the pumping station was proposed based on configuration software. Pumping Station managers can easily observe the site conditions, historical curve and team reports, also can change the operation mode of machine and pump.