Vibration Method for Monitoring the Technical Condition of Support-Rod Insulators Using Non-Contact Laser Vibrometry Methods

Nizamiev, M. F.; Ivshin, I. V.; Vladimirov, Oleg; Dolomanyk, Leonid V.

doi:10.1109/apeie.2018.8545856

Cited by 6 publications

(5 citation statements)

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“…Методы вибрационного контроля, в отличие от остальных, позволяют осуществлять контроль трансформатора во время его работы под напряжением, также обладают высокой точностью, чувствительностью к зарождающимся и развивающимся дефектам, и возможностью применять компьютерные технологии для обработки и анализа информации По результатам анализа работ [4,5,6,7] можно сделать вывод, что спектры вибрации бака трансформатора включают в себя от двух до десяти информативных частот. Для работоспособного трансформатора без явных дефектов амплитудный спектр будет содержать пики амплитуд на частотах 100 Гц, 300 Гц и 500 Гц.…”

Section: Improved Methods For Vibration Control Of the Technical Cond...unclassified

“…Методики вибрационного контроля, представленные в работах [1,2,7,8], основываются на сравнении эталонного (бездефектного) и текущих спектров вибрации активной части силового трансформатора. Однако, проведенные теоретические и экспериментальные исследования показывают, что используемые программные обеспечения имеют погрешность при преобразовании амплитудно-временного сигнала в спектр с использованием быстрого преобразования Фурье.…”

Section: Improved Methods For Vibration Control Of the Technical Cond...unclassified

“…Методики вибрационного контроля, представленные в работах [7,8,9,11], позволяют оценить техническое состояние активной части силового трансформатора только как исправное и неисправное. Однако при оценки состояния как неисправное, обмотки или магнитопровод могут находиться в работоспособном состоянии, и нет необходимости в оперативном выводе такого трансформатора из эксплуатации.…”

Section: Improved Methods For Vibration Control Of the Technical Cond...unclassified

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Improved method for vibration control of the technical condition of a power transformer based on fractal analysis of the amplitude-time characteristics

Basenko

Ivshin

Vladimirov

et al. 2023

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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The purpose of this work is to improve the method of vibration control of a power transformer through the use offractal analysis of the amplitude-time signal. Fractal analysis of the amplitude-time characteristics will allow to quantify the degree of «indentation» of the vibration signal of the transformer associated with a defect. For a quantitative assessment, the fractal analysis coefficient (FAC) was introduced based on the determination of the fractal dimension by the Hausdorff-Besikovich method. To test the developed method, a non-contact laser measuring and diagnostic complex (LCMC) with developed software based on LabVIEW, ImageJ and Python was used. Experimental studies of the transformer TSZ 16 were carried out using the developed method and LCIK. The CFA of the windings and magnetic circuit of the transformer under study, the level of technical condition for the controlled elements of the transformer are determined. METHODS. The improved method of control makes it possible to increase the accuracy of control of 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 non contact 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 the signals received from the transformer.

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Section: Improved Methods For Vibration Control Of the Technical Cond...unclassified

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Improved method for vibration control of the technical condition of a power transformer based on fractal analysis of the amplitude-time characteristics

Basenko

Ivshin

Vladimirov

et al. 2023

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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“…Since the force acting on the i mass is determined only by compression and tension of the springs connecting with it, the motion equations for each of the masses will have the form (4). Where kc=0, the system (1) divides into independent equations and the motion of each mass does not depend on its nodes.…”

Section: Z4(t)=asin(ωt)≤005sin(ωt)mentioning

confidence: 99%

“…Due to the individual motor elements' masses, stiffness and damping factors for these elements, such as mechanical transverse excitation of the rotating armature, collector, fan, bearings, vibrations of brush holder, poles and column (for example, due to the movement of the object with DC motor) ( Fig. 1), in modeling, we can observe the emergence of complex structures that can be described as a superposition of harmonic oscillations called normal oscillations [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Vibration model as a system of coupled oscillators in a direct current electric motor

et al. 2019

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This article describes a vibration model connected by individual nodes of a DC motor. The purpose of the article is a mathematical model allowing to predict the work of machines with a depreciation resource and search for ways to increase the information content of assessing the functioning of the rolling stock condition without dismantling them. Currently, the operational reliability of the DC motor is reduced after the development of the service life. Study and evaluation of the vibration effect on the brush-collector node. The main components of the DC motor (bearings, electrical brushes) are unrecoverable. Therefore, any interference with their normal operation leads to premature wear of the entire DC motor. Existing methods for life-extending maintain the operational reliability of a DC motor equal or close to the passport data for several years. This model allows vibration diagnostics without dismantling the DC motor and stopping the rolling stock. The mathematical model describes the oscillations of each node of the DC motor in the direction of movement of the rolling stock, showing the excess of the permissible value. After mathematical processing of the results, a machine reliability model under study is obtained (usually in the form of polynomials) as a function of the needed parametersthe influencing factors. Due to this model, pre-detected defects can save on repairs and maintenance in the future. This model is the basis of software for online diagnostics. The proposed model allows providing an objective use of repair and restoration compositions depending on the current technical condition, which will lead to an increase in the service life of the mechanism and savings in operating costs. On the one hand, extending the operating life of a DC motor should produce an economic effect, and on the other hand, technical measures to maintain operational reliability cause an increase in material costs.

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Equipment and Data Transmission System for Express Analysis of the Technical Condition of the Main Equipment of the 35/6(10)kV Transformer Substation

Vladimirov

Galyautdinova

Ivshin

et al. 2021

Lecture Notes in Civil Engineering

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Vibration Method for Monitoring the Technical Condition of Support-Rod Insulators Using Non-Contact Laser Vibrometry Methods

Cited by 6 publications

References 0 publications

Improved method for vibration control of the technical condition of a power transformer based on fractal analysis of the amplitude-time characteristics

Improved method for vibration control of the technical condition of a power transformer based on fractal analysis of the amplitude-time characteristics

Vibration model as a system of coupled oscillators in a direct current electric motor

Equipment and Data Transmission System for Express Analysis of the Technical Condition of the Main Equipment of the 35/6(10)kV Transformer Substation

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