Thermal modelling of oil-filled power transformer TM - 160/10

TARGET. The purpose of this work is to develop a non-contact laser control and measuring complex (LCMC) for vibration control of the level of pressing of windings and magnetic circuit of a power transformer. A laser vibrometer is used as a measuring element, the developed software in the LabVIEW graphical programming environment serves as a tool for processing vibration signals. The technical condition of the power transformer is analyzed by the amplitude spectra of the vibration of the tank of the transformer under study, formed using the fast Fourier transform algorithm in the LabVIEW software.METHODS. The vibration control method makes it possible to control a power transformer during its operation under voltage, which makes it possible to move from a planned system of transformer repairs to a system for taking out for repair according to the current technical condition.RESULTS. The developed LCMC allows to carry out non-contact measurements of vibration parameters of a power transformer under voltage and to establish the current level of pressing of windings and magnetic circuit.CONCLUSION. The developed LCMC with software allows contactless control of the technical condition of the magnetic circuit and the windings of the power transformer according to the amplitude-frequency characteristics of the vibration parameters, as well as the use of statistical methods for processing and analyzing signals received from the transformer.

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Contactless laser control and measuring complex for determining the level of winding pressure and magnetic conductor of power transformer

Basenko

Vladimirov

Ivshin

et al. 2021

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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show abstract

Contactless laser control and measuring complex for determining the level of winding pressure and magnetic conductor of power transformer

Basenko

Vladimirov

Ivshin

et al. 2021

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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Diagnosis of transformers of electrical complexes using non-contact laser vibrometers

Nizamiev

Basenko

Ivshin

et al. 2022

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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TARGET. The purpose of this work is to improve the method of vibration control of the active part of a power transformer by fractal analysis of its vibration signal. Fractal analysis of the magnitude-time characteristics of the quantitative assessment of the degree of "jagged" vibration signal of the transformer. For a quantitative assessment, the coefficient of fractal analysis (FAC) was introduced based on the determination of the fractal dimension by the Hausdorff-Besikovich method. To test the developed method of application, a non-contact laser measuring diagnostic complex (MDC) with developed software based on LabVIEW, ImageJ and Python. Experimental studies of the technical condition of the transformer TSZ 16 were carried out on the basis of the developed method using a non-contact LCIK, the CFA of the windings and the magnetic circuit of a single transformer was determined, the level of technical condition for the impulse elements of the transformer was determined.METHODS. The vibration control method makes it possible to control a power transformer during its operation under voltage, which makes it possible to switch from a planned system of transformer repairs to a system for taking repairs according to the current technical condition.RESULTS. The improved method of vibration control was tested using the developed noncontact LCIK, the level of technical condition of the power transformer under voltage was determined.CONCLUSION. An improved method of vibration control makes it possible to determine the level of technical condition of an energized power transformer with the possibility of automatically obtaining a decision on the technical condition, as well as to use statistical methods for processing and analyzing signals received from the transformer.

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Thermal modelling of oil-filled power transformer TM - 160/10

Cited by 5 publications

References 4 publications

Contactless laser control and measuring complex for determining the level of winding pressure and magnetic conductor of power transformer

Contactless laser control and measuring complex for determining the level of winding pressure and magnetic conductor of power transformer

Contactless laser control and measuring complex for determining the level of winding pressure and magnetic conductor of power transformer

Diagnosis of transformers of electrical complexes using non-contact laser vibrometers

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