Perfecting evaluation methods of energy equipment technical condition and resource based on electromagnetic-acoustic effect

Abstract

To assess the technical condition and resource for the safe operation of electric and electrical equipment, it is proposed to use the electromagnetic-acoustic effect and the dynamic identification method based on the analysis of the coordinates of the roots of the characteristic equation (polynomial of the denominator of the transfer function of the system "control object -electromagnetic-acoustic transducer") on the complex plane . The transfer function of the studied system "control object -electromagneticacoustic transducer" is an integral quantitative parameter characterizing the state of the equipment metal.

Information and measuring complex for studying the influence of mechanical stresses in metal on the parameters of electromagnetic-acoustic transformation

“…The information-measuring complex presented in this article is the result of an improvement of the experimental setup described in [4] for studying the electrical and magnetic properties of metals, and the experimental setup described in [9] for studying the acoustic, magnetic and electrical properties of metals with using electromagnetic-acoustic converters. Unlike similar installations developed by Drachev K.A.…”

“…Bashirov. [4], the speed of propagation of longitudinal and transverse acoustic waves according to the method developed by I.G. Khusnutdinova.…”

“…it is necessary to control changes in the properties of the metal at the level of its structure. The results of numerous studies indicate that defects in the metal structure originate and develop in zones of concentration of mechanical stresses [4,6,9,13,18,23]. Therefore, to prevent the destruction of equipment at hazardous production facilities, it is necessary to identify zones of increased concentration of mechanical stress and monitor the state of the metal structure in these zones.…”

Study of the relationship between the parameters of electromagnetic-acoustic transformation and the stress-strain state of the metal to solve the problem of remote monitoring of power equipment

“…But for all its information content, the dynamic mathematical model in practical application is characterized by significant labor intensity and does not exclude the influence of the human factor on the control results. For practical applications, frequency models of the stress-strain state and damage of metal are preferable, allowing the use of an effective spectral method of information processing [18]. The use of frequency models, due to the large amount of initial information that needs to be processed, is based on modern intelligent neural network technologies.…”