Essays about: "Hanna Olofsson"

Found 3 essays containing the words Hanna Olofsson.

  1. 1. Transmission line protection performance in presence of power electronic-interfaced devices : Impact and needed countermeasures in the Swedish transmission system

    University essay from Uppsala universitet/Elektricitetslära

    Author : Hanna Olofsson; [2021]
    Keywords : ;

    Abstract : The penetration level of power electronic-interfaced devices (PEID:s) in power systems isincreasing, including wind- and solar power, HVDC and FACTS devices. Fault current injectedby PEID:s is lower in magnitude, may lack or contain a reduced negative sequence componentand can have a wide range of phase angles, as opposed to fault current supplied bysynchronous generators (SG:s). READ MORE

  3. 2. Dimensionering av Jumkils nya skolas energisystem : implementering av bergvärmepump, solcellsanläggning och batterilager

    University essay from SLU/Dept. of Energy and Technology

    Author : Frida Andersson; Johanna Carlsson; Linnéa Hane; Jesper Larsson; Josephine Lindén Magnusson; Hanna Olofsson; Richard Robertsson; Pontus Roos; Jessica Wänlund; [2018]
    Keywords : energikartläggning; miljöcertifiering; flödesbatteri; varvtalsstyrd värmepump; PVsyst; solcellsanläggning;

    Abstract : The purpose of this study is to develop a modern and energy efficient system solution for a school in Jumkil, combining solar power, battery storage and geothermal heat pump system. By using models, simulations and available literature the study examines the dimensions of the included components for optimal coverage of the schools energy demand. READ MORE

  4. 3. Fröodling av Raj- och rörsvingel i Sverige

    University essay from SLU/Agrosystems (until 121231)

    Author : Hanna Olofsson; Marcus Olsson; [2009]
    Keywords : rajsvingel; rörsvingel; försöksresultat; etablering; gödsling; växtreglering; skördeteknik;

    Abstract : Festulolium (Festulolium) and tall fescue (Festuca arundinacea) has not been grown inSweden over a longer period. So far there is no greater area cultivated, but the area isincreasing. Festulolium and tall fescue are expected to eventually replace meadowfescue in many leyseed mixtures to dairy cows in southern and central Sweden. READ MORE