Ensuring the Reliable Operation of the Pumping Units by Efficient State Diagnosis

The paper deals with the application of mathematical models to identify the state of the induction motor through the hodograph analysis of the stator and rotor currents and stator voltage (Park method). The use of the mathematical model to identify the state of the motor will provide an opportunity to establish patterns in the results, as well as to make conclusions about the state of the motor. The model used is sufficient for the diagnosis of the motor by analyzing the picture of the hodographs of the motor main parameters. The results of the study and the comparative characteristics of the hodograph of properly functioning and faulty motor at its idle start-up are given.