Pumping unit motor fault diagnosis method, system, equipment and medium

Abstract

The invention discloses an oil pumping unit motor fault diagnosis method, system, equipment and medium, and relates to the technical field of mechanical equipment maintenance and management.The method comprises the steps that electrical parameters are converted into multi-dimensional phase space representation used for describing a dynamic system state through the phase space reconstruction technology, and a complex network model is constructed according to the multi-dimensional phase space representation; nodes of the complex network model represent motor operation state points in a multi-dimensional phase space, and edges represent similarity or Euclidean distances among the state points; a network topology technology is adopted, key characteristic indexes reflecting the running state of the motor are obtained according to the complex network model, key characteristic data are input into the fault diagnosis model and the fault prediction model respectively, faults generated by the pumping unit motor are diagnosed, and faults about to be generated by the pumping unit motor are predicted. According to the method, interaction and dependency of data can be considered, and key feature information can be obtained, so that the result of fault diagnosis and fault prediction is more accurate.

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