Transverse horizontal vibrations of contact network wires for monitoring their tension during operation

Smerdin, Alexander; Butenko, E.; Ступаков, С. А.; Ermachkov, Gleb

doi:10.1051/e3sconf/202021703002

Cited by 3 publications

(2 citation statements)

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“…The scientific and practical significance of the theoretical methods developed in this paper consists in the development of universal algorithms for computer programs in the format of modern fast-acting software and hardware, which are designed not only for analysis but also for forecasting, with a high degree of accuracy, the results of scientific and production experiments on measuring and calculating the parameters of functional elements based on dielectrics and semiconductors about the complex structure of a crystal lattice [68][69][70][71][72][73][74][75].…”

Section: Scientific and Practical Significance Of The Study Resultsmentioning

confidence: 99%

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

et al. 2022

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This paper is devoted to the development of generalized (for a wide range of fields (100 kV/m–1000 MV/m) and temperatures (0–1500 K) in the radio frequency range (1 kHz–500 MHz)) methods for the theoretical investigation of the physical mechanism of nonlinear kinetic phenomena during the establishment of the relaxation polarization, due to the diffusion motion of the main charge carriers in dielectrics with ionic–molecular chemical bonds (hydrogen-bonded crystals (HBC), including layered silicates, crystalline hydrates and corundum–zirconium ceramics (CZC), etc.) in an electric field. The influence of the nonlinearities equations of the initial phenomenological model of dielectric relaxation (in HBC-proton relaxation) on the mechanism for the formation of volume–charge polarization in solid dielectrics is analyzed. The solutions for the nonlinear kinetic Fokker–Planck equation, together with the Poisson equation, for the model of blocked electrodes are built in an infinite approximation (including all orders k of smallness without dimensional parameters) of perturbation theory for an arbitrary order r of the frequency harmonic of an alternating external polarizing field. It has been established that the polarization nonlinearities in ion-molecular dielectrics, already detected at the fundamental frequency, are interpreted in the mathematical model (for the first time in this work) as interactions of the relaxation modes of the volume charge density calculated on different orders of spatial Fourier harmonics. At the fundamental frequency of the field, an analytical generalized expression is written for complex dielectric permittivity (CDP), which is expressed analytically in terms of special relaxation parameters, which are quite complex real functions in the fields of frequency and temperature. The theoretical CDP and the dielectric loss tangent spectra studied depend on the nature of the relaxation processes in the selected temperature range (Maxwell and diffusion relaxation; thermally activated and tunneling relaxation), which is relevant from the point of view of choosing exact calculation formulas when analyzing the optimal operating modes of functional elements (based on dielectrics and their composites) for circuits of instrumentation, radio engineering and power equipment in real industrial production.

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Section: Scientific and Practical Significance Of The Study Resultsmentioning

confidence: 99%

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

et al. 2022

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“…1. Processed information in the form of the <digital fingerprints= is accumulated in the database under MySQL control, where they are further processed [9]. If there is no information about the <digital fingerprint= affiliation to the specified group, the smart program clusterize the data, as the result of which the operable object condition clusters and their conditional coordinates in the clusterization area are defined.…”

Section: Methodsmentioning

confidence: 99%

The use of predictive analysis algorithms and methods for the overhead contact line operation mode selection

Smerdin

Ermachkov²,

Sidorov³

et al. 2022

E3S Web Conf.

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The article tells about the problem of the railway infrastructure objects reliable, safe, and effective operation on an example of the overhead contact line operation mode rational selection. The overhead contact line operation mode modelling results are described. The model is considering exploitation and climatic conditions and is based on the clusterization, classification, and neuronal network modelling methods for predictive analysis of a large amount of data.

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Improve hardware facilities and work algorithms of overhead contact line remote monitoring systems

Smerdin

Butenko²,

Михайлов³

et al. 2022

E3S Web Conf.

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An autonomous diagnostic measuring device, that allows to reduce expenses for the maintenance and the need for highly qualified personnel, is proposed in the article. The described algorithm of the work of the measuring system allows setting pre-failure conditions of an overhead contact line during exploitations of the software complex. The Installation scheme of the measuring complex on an overhead contact line equipment and the functional scheme of the software and hardware complex are described. The experimental dependence of the vibration frequency on the contact wire tension is defined for various overhead contact line spans. The limits of the variation of the vibration frequency for various combinations of overhead contact line parameters are defined.

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Transverse horizontal vibrations of contact network wires for monitoring their tension during operation

Cited by 3 publications

References 1 publication

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

The use of predictive analysis algorithms and methods for the overhead contact line operation mode selection

Improve hardware facilities and work algorithms of overhead contact line remote monitoring systems

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