Fault Diagnosis Model for Mechanical Vibration of Hydraulic Turbine Units in Large Pumped Storage Power Stations
In order to improve the accuracy of mechanical vibration fault diagnosis for hydraulic turbine units in large pumped storage power plants so as to timely repair them,ensure the safe operation of hy-draulic turbine equipment in pumped storage power plants,and extend the service life of machinery,a method for mechanical vibration fault diagnosis of hydraulic turbine units is proposed.By using dimension-less processing for the mechanical signals of the hydraulic turbine unit,redundant signals are removed.Then,the weighted distribution of vibration parameters is determined,and the weight of fault characteristic quantity is set.Next,a distributed health function for the hydraulic turbine unit of pumped storage power station is constructed.With the above steps,the design of the mechanical vibration fault discrimination method for the hydraulic turbine unit is completed,and the normal status of the hydraulic turbine unit is detected,so as to achiev mechanical vibration fault diagnosis.Through experiments,it is proved that the proposed model can accurately identify fault vibrations,ensure timely follow-up maintenance,and improve work efficiency.
large pumped storage power stationhydraulic turbine unitmechanical vibrationfault iden-tificationsignal processing
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