Research On Control Function In The Integrated Automation System Of Pumping Station

Pumping station integrated automation system was a system which integrates control,protection,running and management,it could greatly improve the efficiency of pumping station. Small and medium-sized electric power pumping stations were taking on farmland irrigation,urban water supply,drainage and so on. Consequently it should designe an integrate automation system which adapted to the small and medium-sized electric power pumping stations, it was an important task in the building of modern pumping stations.The thesis makes bin county ju-ren centrifugal type electric power irrigation and drainage station as the research object, based on analyzing domestic and foreign pumping station integrated automation system systematically, it accomplishes the whole project analysis and realized design of the integrated automation system which consisted by the pump on-off control,overcurrent protection,optimizing operation,dynamic automatic control of the pressuring head gate.The whole system consists two part: host computer designing and hypogyny computer designing. The hypogyny computer uses the AT89C52 single-chip processor as the control core of the system. It designs the sampling circuit,A/D transition circuit and the RS-485 communication circuit. Through the relay controlling the AC contactor which realized the control of the starting and stopping of electromotor. The software of hypogyny computer uses C51 language as developing control software of single-chip processor,it developed automatic regulation of the gate,the starting program of water pump unit and communication program etc.The host computer control management system is consistsed by the control main window module,on-line monitor module,history data enquire module and alarm module and so on. It uses the Visual Basic language to develope,mainly accomplishing communication with the hypogyny computer,namely it sents control order to the hypogyny computer and receiving,displaying and storaging the data which single-chip processor collected. And using principle of fuzzy control to research in the optimized control of water pump unit, it provides the reference to pumping station economical operation. In the whole design, hardware and software all use the anti interference technology, it makes the design running stably.In order to verifying the design circuit and the control program, which is presented in this thesis, the analog experiment was performed based on the laboratory condition. It shows that the control unit of the pumping station integrated automation system can act according to the...