Identification of Asynchronous Motor Parameters in Operational Mode

The most common consumer of electrical energy in the power system are asynchronous motors. In view of their widespread relevance, the task of maintaining static load stability is constantly increasing. At the moment, the limits of static stability are determined on the basis of nameplate data, which can lead to significant errors. The use of up-to-date information on the electrical parameters of the asynchronous motor makes it possible to increase the accuracy of calculations and the adequacy of the control actions produced by automatic equipment. The article proposes a method of parametric identification, which allows determining the electrical parameters of the asynchronous motor in operational modes. The method is based on determining the parameters of the system of Park-Gorev complete equations by a numerical method. The error of the proposed method is less than 1%. The introduction of low-frequency noise with amplitude of 1% of the main signal increases the accuracy of the method to 5%. The introduction of high-frequency noise with amplitude of 0.5% of the main signal increases the error of selected parameters to 7%.