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2016 17th International Scientific Conference on Electric Power Engineering (EPE)

16-18 May 2016

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Displaying Results 1 - 25 of 126
  • Author index

    Publication Year: 2016, Page(s):XI - XV
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  • [Back cover]

    Publication Year: 2016, Page(s): c4
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  • [Copyright notice]

    Publication Year: 2016, Page(s): 1
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  • [Front cover]

    Publication Year: 2016, Page(s): c1
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  • [Title page]

    Publication Year: 2016, Page(s): 1
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  • Invitation

    Publication Year: 2016, Page(s):1 - 2
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  • Multi-agent system based distributed voltage control in medium voltage distribution systems

    Publication Year: 2016, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (738 KB) | HTML iconHTML

    Due to the penetration of Distributed Generation (DG), distribution systems are advancing towards the smart grid technologies for voltage control strategies. In this paper, a Multi-Agent System (MAS) Based, two stage algorithm is proposed that removes the inadmissible voltages on the nodes of distribution system, in distributed manner. Furthermore, the algorithm also minimizes the overall losses. ... View full abstract»

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  • Bad practices and most frequent mistakes in IPv4 networks implementation in smart electrical and automatic systems: Cyber security in distribution smart grid

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1434 KB) | HTML iconHTML

    Teleinformation systems are increasingly often utilized in every branch of industry related to mass distribution of utilities, regardless of the scale and occupied market sector. The need to use ever more effective data transmission media with specific communication interfaces brought about the creation of a brand new management structure within electrical power systems called the Smart Grid. In m... View full abstract»

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  • Noise measurement of turbo-generators

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (973 KB) | HTML iconHTML

    This article presents two different methods revealing noise sources at turbo-generators. The first method is based upon an identification of amplitudes in a noise spectrum. The second presented method is based upon ISO standards, but was extended by MATLAB application displaying 3D graphs of recorded values. View full abstract»

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  • E-mobility and multiagent systems in smart grid

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (171 KB) | HTML iconHTML

    From point of view of power engineering the successful commercial market with electric vehicles demands a completely new concept of their integration into contemporary electrical network. The electric vehicles have very limited range, so they have to be charged in short periods, that means for the grid problems with peaks in the daily load profile. The paper outlined one of the most promising - de... View full abstract»

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  • Two phase distribution system for railways

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    Under electrical power transmission or distribution is mostly understand a three phase system. In the railway we can find also single phase and even two phase systems. Because the two phase systems is so unusual and it open many technical challenges, this paper would like to introduce a 2×25kV autotransformer traction system with higher focus on the protection schemes. View full abstract»

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  • Distance protection of big network transformers

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (507 KB) | HTML iconHTML

    This paper shows how to set the distance protection of a big network transformer for correct measuring all kinds of a short circuits inside and behind this transformers - YNauto / d1 (400 / 220 / 35 kV, 400 or 220 / 110 / 10,5 kV). There is a problem with influence by their tertiary delta winding. In the paper is the derivation of impedances and method for distance protection setting. View full abstract»

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  • Phase current asymmetry on the double-circuit very high voltage overhead transmission line

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (571 KB) | HTML iconHTML

    This paper is concerned with the calculations of the phase current asymmetry on the power vhv overhead transmission line with two circuits. Presented algorithm allows taking into consideration the mutual inductive and capacitive couplings between the conductors. Their effect can be reduced with the help of the transmission line transposition. On the non-transposed transmission line these couplings... View full abstract»

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  • Predicting arc faults in distribution switchgears

    Publication Year: 2016, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1213 KB) | HTML iconHTML

    Due to the wide dependency on electricity in our daily life, it is highly desired to have an uninterrupted and reliable supply of electricity for domestic, commercial, transportation, industrial and healthcare purposes. An arc fault occurring in switchgear causes long duration power interruption, damage to the equipment and hazard to personnel. Several arc protection systems have been introduced d... View full abstract»

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  • Laboratory high voltage capacitor with low PD level and low dissipation factor

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (966 KB) | HTML iconHTML

    High voltage capacitors are widely used in middle and high voltage laboratories and testing rooms. Capacitors are used for measurement of voltage in the form of voltage dividers. Injection and blocking capacitors are placed in the galvanic systems of partial discharges. And high voltage capacitors are also used in the high voltage as the part of laboratory bridge circuits. Common characteristics o... View full abstract»

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  • Socio-political view of smart grid implementation — A survey

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (366 KB) | HTML iconHTML

    This paper deals with smart grids and social acceptance of them and based on various studies from this field attempts to answer questions such as how the society perceives this new technology, what are the sources of an influence, and what should be done in order to achieve a smooth implementation of smart grids with as few obstacles as possible. Rather new technologies are necessary for implement... View full abstract»

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  • Thermal analysis of electromagnetic levitation coil

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (362 KB) | HTML iconHTML

    This paper presents analytical and numerical thermal analysis of three different toroidal coils levitated on an aluminum plate. The analytical method consists of a network of thermal resistances that make it possible to estimate the average temperature of the coils. In the numerical method, by using the FEM thermal and magnetic analysis, the average temperature of the coils and the amount of the i... View full abstract»

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  • The study of harmonic reduction in Light Emitting Diode (LED) roadway lighting system

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (606 KB) | HTML iconHTML

    Since electrical energy is essential in human life, it is necessary to find out a way to reduce its consumption. In the past, in Thailand, they had to provide much energy to roadway lighting system because main lighting equipment has consumed high energy to generate lighting in the roadway. But today, we are increasingly aware of energy consumption. As a result, Light Emitting Diode (LED) luminair... View full abstract»

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  • Induction motor modeling using COMSOL multiphysics

    Publication Year: 2016, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (727 KB) | HTML iconHTML

    This paper presents a time-dependent simulation of three-phase squirrel cage induction motor using COMSOL Multiphysics software. Simulation was made for constant rotational velocity adjusted to the nominal one of the tested motor. The course of stator currents, currents in rotor bars and in rotor ring and course of motor torque is shown. Finite element method model, external electrical circuits an... View full abstract»

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  • Agent based bidding architecture in electricity markets for EVs as V2G and G2V

    Publication Year: 2016, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (342 KB) | HTML iconHTML

    Due to the expected high penetration of intermittent renewable energy sources in power grid, such as solar and wind, the issue of matching demand and supply would become more critical. In order to address the issue, this paper investigates the potential of Electric Vehicles (EVs) for the short term power imbalances in smart grid. This paper proposes a simple bidding algorithm for energy market for... View full abstract»

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  • The weighted kernel density estimation methods for analysing reliability of electricity supply

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (950 KB) | HTML iconHTML

    The paper presents an assessment of the reliability of medium voltage networks within a power company. Reliability of power supply in medium voltage networks is one of the commonly recognized targets of Smart Grid. Novel approaches are needed for evaluating the reliability of electricity distribution and the reliability of supply in distribution network planning. This paper presents a stochastic s... View full abstract»

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  • Current and voltage harmonics in high-rise prefabricated buildings

    Publication Year: 2016, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1148 KB) | HTML iconHTML

    Connecting a growing number of appliances in homes increases, in particular, the share of non-linear devices. Their operation causes harmonic currents which lead to deformed performances, and result in voltage distortions. This work is a study on the magnitude and order of current and voltage harmonics which may occur in power distribution within common prefabricated buildings. The basis for this ... View full abstract»

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  • Optimal location of the synchronous condenser in electric-power system networks

    Publication Year: 2016, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (693 KB) | HTML iconHTML

    In this paper, authors focus on the use of the synchronous condenser device for voltage stability and power flow control on a three-phase 33 kV Medium Voltage (MV) electric-power system network. Matlab/Simulink is used for the simulation of the proposed system model. To test the validity of the system, measured and calculated power factor values were obtained. Two scenarios were studied; Firstly, ... View full abstract»

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  • Mechanical vibration analysis of induction machine under dynamic rotor eccentricity

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB) | HTML iconHTML

    This paper analyzes the mechanical vibration frequency spectra of a healthy squirrel cage induction machine and the identical machine operating under the dynamic rotor eccentricity. Radial vibrations are evaluated based on the experimental data in no-load and nominal load steady state operations. The main attention is paid to the rotational frequency and twice line frequency vibration components. ... View full abstract»

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  • Electricity generation from RES under uncertainty

    Publication Year: 2016, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (218 KB) | HTML iconHTML

    In recent years, the use of renewable energy carriers has been considerably increasing. The trend is associated mainly with the gradual depletion of reserves of fossil fuels and with problems of the impact of conventional power engineering on the environment, mostly connected with emissions of greenhouse gases. The paper presents statistical data on electricity generation from renewable energy sou... View full abstract»

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