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.
| Рубрика | Физика и энергетика |
| Вид | статья |
| Язык | английский |
| Дата добавления | 08.02.2017 |
| Размер файла | 238,8 K |
Отправить свою хорошую работу в базу знаний просто. Используйте форму, расположенную ниже
Студенты, аспиранты, молодые ученые, использующие базу знаний в своей учебе и работе, будут вам очень благодарны.
Подобные документы
Reducing the noise and vibrations by using hydraulic absorbers as dampers to dissipate the energy of oscillations in railway electric equipments. The phenomenon of the phase synchronization. Examples of stable and unstable regimes of synchronization.
статья [153,4 K], добавлен 25.03.2011The danger of cavitation and surface elements spillway structures in vertical spillway. Method of calculation capacity for vortex weirs with different geometry swirling device, the hydraulic resistance and changes in specific energy swirling flow.
статья [170,4 K], добавлен 22.06.2015The overall architecture of radio frequency identification systems. The working principle of RFID: the reader sends out radio waves of specific frequency energy to the electronic tags, tag receives the radio waves. Benefits of contactless identification.
курсовая работа [179,1 K], добавлен 05.10.2014Study of synthetic properties of magnetic nanoparticles. Investigation of X-ray diffraction and transmission electron microscopy of geometrical parameters and super conducting quantum interference device magnetometry of magnetic characterization.
реферат [857,0 K], добавлен 25.06.2010The properties of conductors of electricity. The electric field is as the forces in the space around a charged body. Diagrams of the electric field and the lines of force in the neighborhoods of charged bodies, the elements of an electrical condenser.
презентация [2,0 M], добавлен 13.01.2012Completing of the equivalent circuit. The permeance of the air-gaps determination. Determination of the steel magnetic potential drops, initial estimate magnetic flux through the air-gap. Results of the computation of electromagnet subcircuit parameters.
курсовая работа [467,8 K], добавлен 04.09.2012Determination of wave-length laser during the leadthrough of experiment in laboratory terms by means of diagnostics of laser ray through the unique diffraction of cut. Analysis of results: length of fringe, areas and interrelation between factors.
лабораторная работа [228,4 K], добавлен 29.12.2010The basic principles and the protection of power lines patterns used in this process methods. Physical basics of high-power transformers in substations. Justification of the information received. Diagram illustrating the operation of the protection.
презентация [628,0 K], добавлен 18.02.2016The photoelectric effect. The maximum kinetic energy. Putting it all together. Can we use this idea in a circuit. The results of the photoelectric effect allowed us to look at light completely different. The electron microscope. Wave-particle duality.
презентация [2,3 M], добавлен 06.04.2016Проектирование синхронных генераторов Marathon Electric, состоящих из главного статора и ротора, статора и ротора возбудителя, вращающегося выпрямителя и регулятора напряжения. Характеристики и механический расчет синхронных двигателей серии Magnaplus.
курсовая работа [2,0 M], добавлен 19.09.2012Create a source of light in Earth orbit. Energy source for the artificial sun. Development of light during nucleosynthesis. Using fusion reactors. Application lamp in the center of a parabolic mirror. Application of solar panels and nuclear reactors.
презентация [2,7 M], добавлен 26.05.2014The chiral model of graphene based on the order parameter is suggested in the long-wave approximation, the ideal graphene plane being determined by the kink-like solution. Corrugation of the graphene surface is described in the form of ripple and rings.
статья [211,7 K], добавлен 23.05.2012Background to research and investigation of rural electrification. Method of investigation, plan of development, Rampuru, a typical rural South African village. Permanent magnet generator, properties of permanent magnets and evidence of wind resource.
курсовая работа [763,2 K], добавлен 02.09.2010Угловая скорость вращения магнитного поля. Математическая модель асинхронного двигателя в форме Коши, а также блок-схема его прямого пуска с использованием Power System Blockset. Зависимость угловой скорости ротора от величины электромагнитного момента.
реферат [672,5 K], добавлен 03.01.2010The principles of nonlinear multi-mode coupling. Consider a natural quasi-linear mechanical system with distributed parameters. Parametric approach, the theory of normal forms, according to a method of normal forms. Resonance in multi-frequency systems.
реферат [234,3 K], добавлен 14.02.2010The process of scientific investigation. Contrastive Analysis. Statistical Methods of Analysis. Immediate Constituents Analysis. Distributional Analysis and Co-occurrence. Transformational Analysis. Method of Semantic Differential. Contextual Analysis.
реферат [26,5 K], добавлен 31.07.2008Estimation de l'unite de la resistance des materiaux largement utilises dans les structures statiques et des disciplines connexes a la conception de pieces de machines, les batiments, ponts et routes. Analyse de l'etat de contraintes dans de la tige.
контрольная работа [397,1 K], добавлен 16.12.2012The results of theoretical analysis and computer simulation of the amplitude and phase errors of the narrowband signal. Vector representation of input and output signals. Standard deviation of the phase. Probability distribution laws of the phase error.
реферат [469,7 K], добавлен 06.04.2011Wimm-Bill-Dann as a producer in dairy products and one of the leader children’s food in Russia. The SWOT and PEST analysis of the enterprise. The individual critical reflection on learning outcomes. The ways of the effective communication with customers.
контрольная работа [30,9 K], добавлен 17.02.2011Text and its grammatical characteristics. Analyzing the structure of the text. Internal and external functions, according to the principals of text linguistics. Grammatical analysis of the text (practical part based on the novel "One day" by D. Nicholls).
курсовая работа [23,7 K], добавлен 06.03.2015
