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Elektrika (Electrics) №8'2013 |
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| Table of contents
Electric equipment: problems and efficiency
- Economic justification of parameter selection for power network elements. Grinkrug, M.S.; Gordin, S.A. (E-mail: grin@knastu.ru), 3
Criteria for selecting the parameters of elements of electrical networks in terms of an economic criterion are discussed. The new objective function for solving the problem of economically reasonable choices of parameters of the network elements was suggested.
Keywords: power supply, power energy, design, electrical network.
- Formation of indicator complex for efficiency evaluation of information system of energy-saving control. Biryulin, V.I.; Gorlov, A.N.; Larin, O.M.; Khoroshilov, N.V. (E-mail: kafedra.es@yandex.ru), 6
The complex of indexes which allow to analyze functionality results of an information management system of power consumption is considered.
Keywords: index, management efficiency, energy-saving, monitoring, power consumption, information system.
- Mathematical model for optimization of industrial enterprise’s electric power supply system to decrease electric power loss. Biryulin, V.I.; Larin, O.M.; Khoroshilov, N.V. (E-mail: kafedra.es@yandex.ru), 10
An optimization task is set and measures for its solution are considered.
Keywords: optimization, loss decrease, technical-organizational measures.
Novelties: electric equipment, technologies, materials
- Influence of geometrical ratios of armature’s tooth zone on parameters of valve inductor-type generator with associated windings. Grechko, N.V. (E-mail: ngretchko@ukr.net), 12
Influence of geometrical correlations of the tooth area of an anchor on the parameters of a valve generator of the inductor type has been investigated.
Keywords: valve generator, inductor type, combined winding, geometrical correlation, tooth area, parameter, pulsation.
- Waste of farming industry is available renewable source for power generation. Batarev, G.A.; Gaydash, N.M.; Maltsev, V.N.; Maltsev, V.V. (E-mail: kafedra.es@yandex.ru), 17
Use possibilities of farming industry waste as a renewable source for power generation is considered.
Keywords: farming industry, waste, recycling, pellet, straw, synthetic fuel, biofuel.
Theory of electrics
- Earth fault current. Kharechko, Yu.V. (E-mail: Y.Kharechko@rambler.ru), 23
The analysis of the concept «earth fault current» is given.
Keywords: earth fault current, leakage current, normal conditions, single-fault conditions.
- Leakage current. Kharechko, Yu.V. (E-mail: Y.Kharechko@rambler.ru), 29
The analysis of the concept «leakage current» is given.
Keywords: earth fault current, leakage current, normal conditions, single-fault conditions.
- Evaluation model development of functional parameters of low-voltage devices. Grachyova, E.I.; Rybakova, A.V. Shagidullin, A.V. (E-mail: shagidullinav@gmail.com), 37
Different methods for determination of contact connection resistances of low-voltage devices and their comparative analysis are presented.
Keywords: contact connection, resistance, automatic circuit breaker, root mean square deviation.
- Distributions of Weibull and Cauchy in reliability theory of object moving with light velocities. Grachyov A.S., 42
Change discussion of the laws of the random distribution in the reliability theory of electrical power systems, moving with nearly light velocities is continued. Weibull and Cauchy distributions are considered.
Keywords: relativistic reliability theory, special theory of relativity, Weibull distribution, Cauchy distribution.
Electric safety and energy saving
- Energy-saving methods under conditions of industrial enterprises. Korovkina, N.P.; Kobrinets, V.P.; Pustovalova, N.N. (E-mail: pnn@open.by), 44
Methods of energy saving in industrial production for an example of application of such industrial units, as pumps and fans are considered. Efficiency of energy-saving measures are determined.
Keywords: energy saving, actuator, pump, fan.
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