Sökning: "Line differential protection"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Line differential protection.

  1. 1. Line Distance Protection in Power Grids with Variable Renewable Energy Sources : An Investigation on Time Domain Distance Protection via Parameter Estimation

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ludvig Ringaby; [2023]
    Nyckelord :Distance protection; Power system protection; Time domain distance protection; Differential Equation Algorithm; Variable renewable energy; IBR; Distansskydd; Skyddssystem i elkraftsystem; Tidsdomän distansskydd; Differentialekvationsalgoritm; Variabel förnybar energi;

    Sammanfattning : Variable renewable energy sources typically connect to the power grid through power electronic interfaces. Increased use of such sources can cause issues for conventional distance protection. LÄS MER

  3. 2. Wide-Angle Radome Design for Low-Cost Additive Manufacturing

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Martin Fajerberg; Mattias Nylander; [2022]
    Nyckelord :Radar; Radome; A-Sandwich; B-Sandwich; Multilayer; Polarization; Angle of Incidence; Finite Element Method; Differential Evolution Optimization; Transmission Line Theory; Honeycomb; Additive Manufacturing; Electromagnetic Theory; Technology and Engineering;

    Sammanfattning : The radome, a portmanteau of the words radar and dome, is a protective dielectric cover to protect a radar from its surrounding environment. The surrounding environment can be rain, wind, sand, dust and whatever else that might harm the radar. LÄS MER

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

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Hanna Olofsson; [2021]
    Nyckelord :;

    Sammanfattning : 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). LÄS MER

  5. 4. Implementation Av Reläskyddssamverkan : En studie om en effektiv reläskyddssamverkan med hjälp av längsdifferentialskyddets kommunikationskanaler

    Kandidat-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Khalid Husen; Fadi Imad Mousa; [2021]
    Nyckelord :Teleprotection scheme; distance protection; earth fault protection; protective relays.; Reläskyddssamverkan; reläskydd; teleskyddsschema; distansskydd; jordfelsskydd;

    Sammanfattning : En tranmissionsledning är delen av elsystemet som överför ström från kraftverk till slutanvändare. Därför är det av vikt att en transmissionslinje alltid ska vara skyddad. LÄS MER

  7. 5. Time Synchronization for Ethernet Communication based Line Differential Protection

    Master-uppsats, KTH/Elkraftteknik

    Författare :Surya Seetharaman; [2017]
    Nyckelord :;

    Sammanfattning : Most of the industrial manufactures and designers of Power Substation Automation ProtectionControl products are under pressure regarding the existing communication architecture ofthe Line Dierential Protection Application. Currently the widely used technologies includeSONET/SDH which are circuit switched networks, that are no longer predominant. LÄS MER