Now showing items 1-8 of 8

    • Dynamic Modelling Approach to Assess Control Strategies of Distributed Energy Resources 

      Kopicka, Marek; Toman, Petr; Drápela, Jiří; Ptacek, Michal; Novak, Vojtech (AIM, 2019-06-03)
      Growing share of inverter-based power sources in distribution network brings new challenges to field of grid control, power management etc. This paper is focused on behavior of inverter-based power sources in loss-of-mains ...
    • E-mobility impact on supply in distribution grid 

      Kurfiřt, Martin; Kaspirek, Martin; Kouba, Daniel; Mezera, David; Hlavnicka, Jan (AIM, 2019-06-03)
      The paper evaluates the impact of chargers measured on the charger cable connection to the distribution grid.In the paper are described the characteristic places and methods of charging electric cars with AC and DC current. ...
    • Evaluation of the new method Vdip for an earth fault location 

      Topolanek, David; Toman, Petr; Jurak, Viktor; Jurík, Michal; Jiricka, Jan; Drápela, Jiří (AIM, 2019-06-03)
      The paper presents results from the first application of the new method "Vdip" for an earth fault location. The Vdip method is based on evaluation of the change of negative sequence voltage recorded on LV side of distribution ...
    • Experience from Deployment of Battery Storage in Czech Distribution Grid 

      Jurík, Michal; Kurfiřt, Martin; Vaculík, Petr (AIM, 2019-06-03)
      This paper presents results and findings from deployment and operation of a large-scale battery storage unit connected directly into a MV distribution grid in the Czech Republic.  Furthermore, it offers an input for ...
    • How Photovoltaic Inverter Firmware Could Affect PQ 

      Bilik, Petr; Martinek, Radek; Vanus, Jan; Kaspirek, Martin (AIM, 2019-06-03)
      This paper describes the impact of photovoltaic power plant inverter firmware on voltage quality parameters in low voltage distribution grids. The DSO identified the photovoltaic power plant with the power of 60kW as a ...
    • Phase Identification in smart metering pilot project Komorany 

      Vycital, Vaclav; Ptacek, Michal; Toman, Petr; Topolanek, David; Drápela, Jiří; Zamphiropolos, Juan (AIM, 2019-06-03)
      Residential households in low voltage systems in the Czech Republic are connected to the distribution network either by single phase or by three phases. It is a common practise for distribution system operators that the ...
    • Voltage dip assessment in context of voltage quality regulation 

      Tesarova, Miloslava; Kaspirek, Martin (AIM, 2019-06-03)
      Voltage events, namely voltage dips, are not as heavily regulated as continuity of supply, although they can have a similar economic impact on industrial customers as interruptions. Before setting limits of voltage dips ...
    • Voltage variation in MV distribution networks and its impact on selection of MV/LV transformation ratio 

      Broz, Filip; Prochazka, Karel; Kaspirek, Martin; Jiricka, Jan (AIM, 2019-06-03)
      Regarding the nominal voltage change from 380 V to 400 V in LV networks and increasing the maximum voltage from 400 V to 420 V, the distribution utilities started to take a different approach to the MV/LV transformation ...