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Modern Technique and Technologies, 2008. MTT 2008. International Conference

Date 24-28 March 2008

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Displaying Results 1 - 25 of 50
  • [Covers]

    Publication Year: 2008, Page(s):c1 - c4
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  • [Title page]

    Publication Year: 2008, Page(s): 1
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  • [Copyright notice]

    Publication Year: 2008, Page(s): 2
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  • Conference scientific program committee

    Publication Year: 2008, Page(s): 3
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  • Table of contents

    Publication Year: 2008, Page(s):4 - 7
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  • Section I Power engineering

    Publication Year: 2008, Page(s): 8
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  • Hesteresis and its influence on the creation of the ferroresonance

    Publication Year: 2008, Page(s):9 - 12
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1110 KB) | HTML iconHTML

    The effort to decrease the power dissipation in the energetic system stemming from increasing ecological and economical requirements is the reason of the growing frequency of occurrence of various incidental phenomena. It is important to consider the system as a whole, so it is necessary to take into account the fact that lowering the power dissipation will lead to absorption in the system. Howeve... View full abstract»

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  • Assessment of short-circuit conditions in the interconnected local distribution system

    Publication Year: 2008, Page(s):12 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1183 KB) | HTML iconHTML

    This paper analyzes how to calculate the symmetrical and unsymmetrical short-circuit currents. The main reason of this thesis is to give, step by step, a complete method for the calculating of short-circuit currents and his mechanical or thermal stresses in local distribution network. The calculation is applying on medium-voltage AC power networks and takes into account the recommendations of the ... View full abstract»

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  • Maintenance strategies of power equipments with a brief view to condition monitoring of power transformers

    Publication Year: 2008, Page(s):16 - 19
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (626 KB) | HTML iconHTML

    The paper is focused on maintenance strategies of power equipments. At first, the basic types of maintenance strategies will be discussed and then their optimization methods. Second part of the paper describes few methods of condition monitoring of power transformers. View full abstract»

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  • Using of the mathematical tool of discrete electrotechnic for indefecation of parameters of transmission lines

    Publication Year: 2008, Page(s):20 - 23
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB) | HTML iconHTML

    Information about parameters of equivalent circuit such important unit of the power engineering systems (PES) as transmission lines (TL) is required for: evaluation complexes, diagnostic process of electrical equipment, adaptive management of unit etc. The designing of adaptive object model is realized on a base of the information about regime and circuital parameters - parameters of an equivalent... View full abstract»

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  • Reserching pressure vawe from the electrodischarge in water

    Publication Year: 2008, Page(s):23 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (741 KB) | HTML iconHTML

    In the electrodischarge technology of materials process which use electro burst phenomenon in liquids or solids the working tool is expanding discharge channel from pulsed breakdown. Plasma channel in water is made by electrical breakdown of interelectrode gap or electro burst wire and following breakdown of burst products (vapors of water and metal) in the gap. The first approach requires high am... View full abstract»

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  • State parameters interconnections of power system including a high frequency synchronous generator with an asynchonous tie

    Publication Year: 2008, Page(s):27 - 30
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (811 KB) | HTML iconHTML

    The last progresses in power mechanical engineering and power electronics had permitted to construct gas turbine power units (GTPU) with high frequency synchronous generators (HFSG) and static frequency converters (SFC) operating as asynchronous tie (AT). Such GTPU has a number of advantages over conventional one: 1) does not have a reduction gear between turbine and generator shafts; 2) gives an ... View full abstract»

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  • Section II Instrument making

    Publication Year: 2008, Page(s): 31
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  • Determining the maximum permissible control cable lenghts and measures to countract excessive cable capacitance

    Publication Year: 2008, Page(s):32 - 35
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1062 KB) | HTML iconHTML

    The contactor is the most important switching device in industrial and commercial applications. Its importance has further increased due to the influence of automation. This has given rise to some significant advancements in the development of contactors, of which the user is often not aware. For example, the power required for switching has been considerably reduced in recent years due to the use... View full abstract»

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  • Control of serial port (RS-232) communication in LabVIEW

    Publication Year: 2008, Page(s):36 - 40
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2119 KB) | HTML iconHTML

    The present paper describes control of serial communication in LabVIEW software. Serial communication is a popular means of transmitting data between a computer and a peripheral device such as a programmable instrument or even another computer. Serial communication uses a transmitter to send data, one bit at a time, over a single communication line to a receiver. You can use this method when data ... View full abstract»

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  • System for processing, vizualizaition and data storage

    Publication Year: 2008, Page(s):41 - 44
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1897 KB) | HTML iconHTML

    The present paper describes a system for measuring, collecting, analyzing, and displaying data. A 100 W solar energy converter is used to monitor the effect of operating conditions on its loading characteristics. This photovoltaic (PV) cell and the associated measuring and data acquisition system have been installed in the solar laboratory (on a terraced roof) in the department of electrical power... View full abstract»

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  • Unconventional methods of measurement in photometry

    Publication Year: 2008, Page(s):45 - 48
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1642 KB) | HTML iconHTML

    The article describes a system of conventional measurements of light intensity curves using standard methods and compares the differences between the goniophotometers used. The article further deals with unconventional methods of measurement of light intensity curves with the help of up-to-date photometers with CCD sensors, describing occurrence of measurement error resulting from short photometri... View full abstract»

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  • Non-contact length and speed measurement

    Publication Year: 2008, Page(s):48 - 52
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2253 KB) | HTML iconHTML

    Every manufacturer wants to keep track of product quality and quantity during the production process. But when the manufacturer is producing cable, that's not as easy as it may sound. Manufacturers typically utilize contact encoders to measure product length and speed during production. But contact encoders may present measurement accuracy problems when used to measure power cable. View full abstract»

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  • Disk for studying microcontrollers

    Publication Year: 2008, Page(s):52 - 54
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (751 KB) | HTML iconHTML

    With the development of microprocessor technology there appeared the requirement for studying new kinds of microprocessors and microcontrollers with their application to solve practical tasks. The main function of modern microcontrollers is the operation in electronic systems. Availability of electrically reprogrammable program and data memory, a large number of registers and in-circuit resources ... View full abstract»

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  • Section III Technology, equipment and machine-building production automation

    Publication Year: 2008, Page(s): 55
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  • Mini suction dredger for SAND

    Publication Year: 2008, Page(s):56 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (850 KB) | HTML iconHTML

    Sand is a naturally occurring granular material composed of finely divided mineral particles. Dredging is the repositioning of soil from a marine environment with the aid of special equipment called dredger in order to initiate infrastructural or ecological improvement.The ecological disadvantages of excavating the limited landscape to serve all the need for sand is much more than the danger posed... View full abstract»

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  • The lazer powder materials' sintering process

    Publication Year: 2008, Page(s):58 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1168 KB) | HTML iconHTML

    At present there are various methods of rapid prototyping. Different physical processes and materials for making prototypes are employed: stereo-lithography - layered hardening of liquid monomers with UV-laser beam trough light influence: LOM method employs sheet materials cut with laser beams; FDIVI-method - layered covering of melted polymer fibers; selective laser sintering - SLS. At the last p... View full abstract»

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  • Section IV Electromechanics

    Publication Year: 2008, Page(s): 62
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  • The peculiarities of mechanical characteristics of pump units as electric drive loadingmachines

    Publication Year: 2008, Page(s):63 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (599 KB) | HTML iconHTML

    Turbomechanisms are the machines of mass application. Suffice it to say that about 25 % of all electric power generated in the country is spent for the electric drive of pumps, fans and compressors. Technical perfection and profitability of electric drive turbomechanisms substantially define the rationality of electric power use in national economy. When dealing with profitability of the electric ... View full abstract»

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  • The influence of polymerization degree on the properties of ultrahigh molecular weight polyethlene

    Publication Year: 2008, Page(s):66 - 69
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1146 KB)

    Polyethylene (PE) takes first stand among all plastic materials due to the valuable technical properties and low price of raw material. Low density PE (LDPE) and high density PE (HDPE) are prevailing. The aim of this work is to study the application of UHMWPE as insulation material. The paper investigates dependences of resistivity, electrical strength and heat capacity on molecular weight of UHMW... View full abstract»

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