Sökning: "reactor hunting"

Hittade 3 uppsatser innehållade orden reactor hunting.

  1. 1. Reactive power control during power system restoration and HVDC investigation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :André Petersson; Christian Bergstrand; [2014]
    Nyckelord :Power restoration; reactor hunting; reactive power control; VSC-HVDC; Technology and Engineering;

    Sammanfattning : As the society gets more and more dependent on electrical energy, it is highly desirable to ensurepower supply at all times. In case of events of natural disasters, simple technical faults or human mistakes, any power system or a large part of it can suffer a blackout. LÄS MER

  3. 2. Resultat av tjugofem års mätningar av Cs-137-halter i älg i Uppsala län

    Magister-uppsats, SLU/Dept. of Soil and Environment

    Författare :Robert Weimer; [2011]
    Nyckelord :cesium; älg; radioekologi; strålning; Tjernobylolyckan; älgkött; Heby;

    Sammanfattning : At the end of April 1986 reactor number 4 of the nuclear power plant at Chernobyl explod-ed and large amounts of radioactive particles were then released into the atmosphere due to both the explosion as well as the consecutive fire of the graphite core. A cloud of radioac-tivity was spread over the northern hemisphere, including Sweden, due to the prevailing wind directions. LÄS MER

  4. 3. Inställning av automatikermed spänningsreglerande verkani det sydsvenska 400-130 kV nätet

    Uppsats för yrkesexamina på avancerad nivå, KTH/Elektriska energisystem

    Författare :Dennis Sipovac; Teresa Gustafsson; [2005]
    Nyckelord :;

    Sammanfattning : The voltage level in the power grid varies due to variations in load and production. Normally these variations are manageable, but they may be excessively large during a disturbance. If the voltage is too high it may damage the equipment in the grid and too low voltages may cause problems like voltage instability. LÄS MER