Essays about: "Mellanspänningsnät"

Found 3 essays containing the word Mellanspänningsnät.

  1. 1. Cross-Country Faults in Resonant-Earthed Networks

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Gabriel Miguel Gomes Guerreiro; [2020]
    Keywords : Cross- country fault; resonant earthing; compensated network; MV network; distance protection; fault analysis; RTDS EMTDC.; dubbla jordfel; spoljordning; jordfelskompenserade elnät; mellanspänningsnät; distansskydd; reläskydd; RTDS EMTDC.;

    Abstract : Reliability requirements for power systems have been constantly increasing, as customers of electric power desire high power availability. In order to improve continuity of supply in medium voltage (MV) networks, utilities in many countries in Europe, North/South America and Oceania use resonant earthing and allow the operation of the network during a single phasetoearth fault for periods from several seconds up to several hours, since the earthfault current at the fault point in such systems is considerably reduced and is unlikely to damage equipment or create hazardous voltages for people or livestock. READ MORE

  3. 2. Optimization of Section Points Locations in Electric Power Distribution Systems : Development of a Method for Improving the Reliability

    University essay from Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Author : Joakim Johansson; [2015]
    Keywords : Primary distribution system; Mälarenergi Elnät; loop structure; radially operated; section point locations; switches; power system reliability; optimization algorithm; analytical technique; FMEA; Mellanspänningsnät; Mälarenergi Elnät; slingnät; radialnät; sektioneringspunkt; frånskiljare; brytare; tillförlitlighet; optimerings algoritm; analytisk teknik; FMEA;

    Abstract : The power distribution system is the final link to transfer the electrical energy to the individual customers. It is distributed in a complex technical grid but is associated with the majority of all outages occurring. Improving its reliability is an efficient way to reduce the effects of outages. READ MORE

  4. 3. Potentialstyrning i mellanspänningsnät : kalibrering av restströmskompensering och isolationsprovning

    University essay from Ämnesavdelningen för elektronik

    Author : Tomas Winter; [2010]
    Keywords : restströmskompensering; mellanspänning; isolationsprovning;

    Abstract : The background to this work is the introduction of the RCC Ground Fault Neutralizer in countries that earlier have used solidly earthed medium voltage networks. The RCC Ground Fault Neutralizer is a protection system that is capable of handling earth faults without disconnecting the feeder. READ MORE