Detection of earth faults in electric power cables by analyzing changes in the short-circuit resistance
Study of effective ground fault detection. Analysis of single phase ground faults in mine cables and ways of their identification. Analysis of method based on measurements of variation of the fault resistance value and associated electromagnetic noise.
Подобные документы
The advantages of the method of modulation polarimetry applied to the sample in the quartz glass plate to identify its internal thermal stresses caused by the spreading of the thermal wave. The solution to the problem of non-stationary thermoelasticity.
статья, добавлен 26.06.2016Analysis of parameters of the impact model measuring the accuracy of orientation using the QUEST and TRIAD method. Analysis of the influence of the parameters of the measuring model on the accuracy of determining the orientation of space vehicles.
статья, добавлен 22.12.2016Mathematical model of a multi-electrode cylindrical structure for uniform distribution of electric field intensity between the electrodes at a much lower capacity compared to flat electrodes. The distribution of electric field intensity in the space.
статья, добавлен 30.07.2016The efficiency of a thermal power cycle. Use of waste heat for process or central heating. Ways to increase the overall efficiency of the power plant. A combination of different thermodynamic cycles in a combined cycle. Once-through cooling systems.
статья, добавлен 20.02.2019- 80. Modeling of electromagnetic processes in electrotechnical complexes for reducing residual stresses
The resulting electromagnetic field is the superposition of electromagnetic fields was found. It was determined the instantaneous electromagnetic force affects the non-ferromagnetic conductive disc and consequently the pressure force of the electrode.
статья, добавлен 30.10.2016 Development of rotor mechanisms, which make it possible to use solar radiation as efficiently as possible. The design and structure of a solar power plant. Scheme of control and balancing of output power. Selection of the type of photovoltaic cells.
статья, добавлен 22.12.2016Preparation and study of a metal-component nanocomposite system with ferromagnetic inclusions. Coefficients of composite layers in free space were calculated as a function of the content of ferromagnetic inclusions and the thickness of the layer.
статья, добавлен 29.01.2017The Maxwell electromagnetic duality relations the Aharonov-Bohm, Aharonov-Casher, and He-McKellar-Wilkens topological phases, which allow a unified description of all three phenomena. Two experimental schemes for measuring the He-McKellar-Wilkens phase.
статья, добавлен 11.09.2012Characteristics of the principle of operation of dynamic model rocket thruster of electromagnetic type consisting of a source of electromagnetic waves of radio frequency and the conical resonator, which are excited by electromagnetic oscillations.
статья, добавлен 22.05.2017Analysis of the impact of the negative bias potential on the structure, substructure and mechanical properties of ZrN coatings. Analysis of effect of negative potential on the surface morphology during the deposition effect in reducing the droplet phase.
статья, добавлен 23.12.2016History of origin and development of the electrotechnical industry. Characteristics and distribution of transformers, their features and purpose. High voltage DC technology. Consequences of absence of electric energy storage in transmission systems.
контрольная работа, добавлен 20.02.2019The history of the effects of the first induction motor. Record status induction improvements and the development of three-phase asynchronous motors. The use of electric motors in modern technology. Features of the nature of induction machines.
реферат, добавлен 03.04.2014Presents methods for evaluation and improvement of output quality of an autonomous power supply system. Characteristic of the output impedance of a switching voltage regulator. Research and analysis features of the process setup for measuring impedance.
статья, добавлен 24.05.2018A method of the WWER-1000 fuel element cladding durability analysis using the energy creep theory. The value of linear heat. Linear heat rate jump. Analyzing the current Ukrainian energetic status. Circumferential and axial stress. Combined load cycle.
статья, добавлен 22.08.2013An analysis of the methodology for identifying the modal parameters of a dynamic system of structures using the Kalman filter, which is a powerful tool of modern control theory. Evaluation of the effectiveness of the method for identifying the structure.
статья, добавлен 24.07.2018Nanocomposite multicomponent coating obtained by vacuum arc deposition method. Analysis of the of the structure of the coating, elemental distribution and composition of the impurity elements using the methods Rutherford backscattering, mass spectrometry.
статья, добавлен 30.07.2016Split-phase symmetrical motor drive on the base of two voltage source inverters, controlled by algorithms of synchronized pulse width modulation, has been investigated. Simulation results are presented for dual three-phase power conversion systems.
статья, добавлен 02.02.2019- 93. Near-field coherent effects at thermal microwave radiation receiving on coupled linear wire antennas
A theory of electromagnetic wave multiple scattering by ensemble of dielectric and conductive bodies, with describing the excited currents inside bodies of electric field tensor T-scattering operator. A system of equations for currents on surfaces.
статья, добавлен 04.11.2018 Research of the main sources of electricity production, as well as their advantages and disadvantages. Characteristics of prospects for the development of solar power plants. Consideration of the main types and methods of installation of stations.
статья, добавлен 26.10.2020The benefits of using improved magnetic materials for electric devices. The mechanism of effect of magnetic field on the formation of ferrite particles in the polymer matrix composites. The calculation of the amount of filler in a phase transition.
статья, добавлен 30.07.2016The simulation of microscopic optical potential based on calculations of the one-particle Green function mass operator using the effective Skyrme nucleon-nucleon forces has been applied for analyzing powers of the elastic nucleon-nucleus scattering.
статья, добавлен 19.09.2013- 97. Quantum optics
The study of the quantum nature of light and its interaction with matter. Mixed States of the electromagnetic field and electrodynamics in the frequency domain. The concept of probability and random variables. Experiments in optical homodyne tomography.
монография, добавлен 08.03.2014 In microwave systems of radio-location, communication and navigation the strictest requirements are placed on a powerful output amplifier and a low-noise input device. For the output amplifier the linearity must be combined with a high level of power.
статья, добавлен 04.11.2018Comparison for new prospects for the use of electromagnetic phenomena in earthquake forecasting, the ultra-low frequency range was selected. Research of information about Ulf networks and researchers who had critical views on electromagnetic phenomena.
статья, добавлен 05.09.2022Study of heavy and superheavy nuclei. Small sectional synthesis SHN. Analysis of the height of the static fission barriers Bfst of heavy nuclei at the single particle. Determination of the energy of the odd nucleon. Static barrier spontaneous fission.
статья, добавлен 06.11.2013