Open AccessApplication of unified microprocessor relay protection units in electrical machine diagnostics
Author(s) -
Владимир Иосифович Полищук,
М. В. Крицкий,
Дмитрий Михайлович Баннов,
С. В. Малышев
Publication year - 2020
Publication title -
izvestiâ vysših učebnyh zavedenij. problemy ènergetiki
Language(s) - English
Resource type - Journals
eISSN - 2658-5456
pISSN - 1998-9903
DOI - 10.30724/1998-9903-2019-21-6-93-100
Subject(s) - microprocessor , computer science , relay , digital protective relay , rotor (electric) , asynchronous communication , electromagnetic coil , generator (circuit theory) , computer hardware , engineering , control engineering , electronic engineering , protective relay , electrical engineering , power (physics) , computer network , physics , quantum mechanics
The article concentrates on the topical issue connected with the detection of defects in the rotor winding of electric machines. The experimental sampling and digital processing of electrical signals from controlled windings is in the basis. The authors conducted the research using two experimental units for asynchronous motor and synchronous generator, respectively. A distinctive feature of the proposed research stands is in solving the problems of digital processing and data analysis on the basis of the application of microprocessor relay protection unit BMRZ developed in Russia. The authors applied method of wavelet decomposition to select the detailing component. They also presented the results of experiments for the breakage in the short-circuit rotor of an asynchronous motor and proved that the microprocessor-based BMRZ device is capable of digitizing at a sampling rate that meets the requirements, and in conjunction with the data processing algorithms that carry out the selective determination of hard-to-detect defects, is applicable in the diagnosis of electrical machines.