Browsing oddělení-EEN-CVVOZE by Title

Now showing items 1-12 of 12

  • Analysis of Dense-Mesh Distribution Network Operation Using Long-Term Monitoring Data 

    Ptáček, Michal; Vyčítal, Václav; Toman, Petr; Vaculík, Jan (MDPI, 2019-11-14)
    The technical and economic aspects and the possibility of the mesh network topology offering many radial configurations lead to the fact that large municipal networks are generally under radial operation. However, it is ...

  • Analysis of IEC 61850-9-2LE Measured Values Using a Neural Network 

    Wannous, Kinan Hasan Wafaa; Toman, Petr; Jurák, Viktor; Wasserbauer, Vojtěch (MDPI, 2019-04-28)
    Process bus communication has an important role to digitalize substations. The IEC 61850-9-2 standard specifies the requirements to transmit digital data over Ethernet networks. The paper analyses the impact of IEC 61850-9-2LE ...

  • The definition of input parameters for modelling of energetic subsystems 

    Ptáček, Michal (EDP Sciences, 2013-06-26)
    This paper is a short review and a basic description of mathematical models of renewable energy sources which present individual investigated subsystems of a system created in Matlab/Simulink. It solves the physical and ...

  • Evaluation of Harmonics Impact on Digital Relays 

    Wannous, Kinan Hasan Wafaa; Toman, Petr (MDPI, 2018-04-11)
    This paper presents the concept of the impact of harmonic distortion on a digital protection relay. The aim is to verify and determine the reasons of a mal-trip or failure to trip the protection relays; the suggested ...

  • Generated heat by different targets irradiated by 660 MeV protons 

    Svoboda, Josef; Adam, Jindřich; Foral, Štěpán; Gustov, S.A.; Katovský, Karel; Kushvatov, J.; Král, Dušan; Solnyshkin, Alexander A.; Tichý, Pavel; Tyutyunnikov, S.; Zeman, Miroslav (Council of Scientific & Industrial Research - National Institute of Science Communication and Information Resources, 2020-04-30)
    Calorimetric experiments have been performed to analyze different thick targets of natU, C, Pb material, irradiated by 660 MeV protons at the Phasotron accelerator facility, Joint Institute for Nuclear Research (JINR) in ...

  • Measurement of (n,) reaction cross section of W-186-isotope at neutron energy of 20.02±0.58 MeV 

    Mehta, M.; Singh, N.L.; Makwana, R.; Subhash, P.V.; Suryanarayana, S.V.; Parashari, S.; Chauhan, Rakesh; Singh, R.K.; Naik, H.; Mukherjee, S.; Soni, B.; Khirwadkar, S.; Varmuža, Jan; Katovský, Karel (Council of Scientific & Industrial Research - National Institute of Science Communication and Information Resources, 2020-05-30)
    The cross-section of 186W(n,)187W reaction has been measured at an average neutron energy of 20.02±0.58 MeV by using activation technique. The 27Al(n,)24Na and 115In(n,n´)115mIn reactions have been used for absolute neutron ...

  • Measurements of 181Ta(n,2n)180Ta reaction cross-section at the neutron energy of 14.78 MeV 

    Soni, B.; Parashari, S.; Mukherjee, S.; Makwana, R.; Mehta, M.; Chauhan, Rakesh; Suryanarayana, S.V.; Pasha, I.; Danu, L.S.; Naik, H.; Nayak, B.K.; Varmuža, Jan; Katovský, Karel (Council of Scientific & Industrial Research - National Institute of Science Communication and Information Resources, 2020-04-30)
    The cross-section of the 181Ta(n,2n)180Ta reaction has been measured with respect to the 197Au(n,2n)196Au monitor reaction at the incident neutron energy of 14.78± 0.20 MeV, using neutron activation analysis and off-line ...

  • New experimental research stand SVICKA neutron field analysis using neutron activation detector technique 

    Varmuža, Jan; Katovský, Karel; Zeman, Miroslav; Šťastný, Ondřej; Haysak, Ivan; Holomb, Robert (EDP Sciences - France, 2018-04-18)
    Knowledge of neutron energy spectra is very important because neutrons with various energies have a different material impact or a biological tissue impact. This paper presents basic results of the neutron flux distribution ...

  • On Minimisation of Earthing System Touch Voltages 

    Vyčítal, Václav; Ptáček, Michal; Topolánek, David; Toman, Petr (MDPI, 2019-10-11)
    Finding cost efficient earthing system design with acceptable level of safety might be quite tedious work. Thus, many earthing system engineers try to find the most suitable design either by employing only their best ...

  • A Physical Calibrator for Partial Discharge Meters 

    Krbal, Michal; Pelikán, Luděk; Štěpánek, Jaroslav; Orságová, Jaroslava; Kolcunová, Iraida (MDPI, 2019-05-29)
    This article offers an alternative method of calibrating partial discharge meters for research and teaching purposes. Most current modern calibrators are implemented as precise voltage pulse sources with a coupling capacitor. ...

  • Techno-economic comparison of various renewable energy sources for hybrid system implementation 

    Černý, Tomáš; Ptáček, Michal (International Society for Science and Engineering, o. s., 2021-08-17)
    The current trends in electro-energetics indicate, that due to depletion of fossil fuels and the need of CO2 emission reduction, there is and will be a substantial development in the fields of renewable energy sources, ...

  • Two-Terminal Algorithm Analysis for Unsymmetrical Fault Location on 110 kV Lines 

    Bukvišová, Zuzana; Orságová, Jaroslava; Topolánek, David; Toman, Petr (MDPI, 2019-03-27)
    This work analyses a two-terminal algorithm designed to locate unsymmetrical faults on 110 kV power transmission lines. The algorithm processes synchronized voltage and current data obtained from both ends of the protected ...