(1) According to the design and operation management method of the existing pumping station, when the river is at high water level, there is a high risk of overloading of the unit motor, affecting the reliability of water supply. (2) The occurrence probability of river water level fluctuation and high water level is the decisive factor that affects the risk level of overload of pumping station. According to the hydrological characteristics of rivers and pumping stations, the importance of maintenance of vibration motor, the stochastic risk analysis method can scientifically and reasonably determine the power reserve coefficient of water pump supporting motor and high risk water level of water source, Pumping station operation reliability and economy. (3) According to the analysis of influencing factors of overload risk of intake pumping station units, measures to reduce the risk level of overloading of intake units are as follows: Firstly, the pumps and combinations are reasonably selected according to the change of working conditions; Section, to take a reasonable and scientific control and scheduling measures, such as speed regulation, if necessary, use of throttling regulation.
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