Sökning: "unintentional islanding"

Hittade 3 uppsatser innehållade orden unintentional islanding.

  1. 1. Relay settings for frequency derivative protection against islanding : Optimizing RoCoF-Hysteresis and Delay for the Swedish power grid: An investigation of relevant values

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Ahmad Safari; [2023]
    Nyckelord :Islanding; unintentional islanding; distributed energy resources; main grid; RoCoF; hysteresis; delay; Ödrift; oavsiktlig ödrift; distribuerade energiresurser; stamnät; RoCoF; hysteres; fördröjning;

    Sammanfattning : This report addresses the parameter settings for a protective relay designed to safeguard a 15 kW wind turbine located in Rimbo, Norrtälje municipality, against unintentional islanding. This type of situation arises when distributed energy resources continue to supply local loads, even if the main grid has been unintentionally disconnected. LÄS MER

  3. 2. Anti-Islanding Protection in Distribution Grids

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

    Författare :Jianan Zhang; [2019]
    Nyckelord :;

    Sammanfattning : The growing number of distributed generation in the electrical system increasesthe risk of unintentional islanding. Power system islanding is the eventthat a part of the grid is continuously powered by the distributed generation,while it is already electrically separated from the power grid[1]. LÄS MER

  4. 3. Gotland as a microgrid -  Energy storage systems frequency response in grids with high level of renewable energy penetration

    Master-uppsats, Uppsala universitet/Elektricitetslära

    Författare :Firas Daraiseh; [2018]
    Nyckelord :Energy Storage System; Frequency Response; Gotland; Microgrid; Wind Curtailment; PSS E;

    Sammanfattning : The Swedish island of Gotland , situated about 100 km from mainland Sweden in the Baltic Sea, represents a power system with a high wind power penetration. The island is connected to the mainland Sweden exclusively via two HVDC cables that provide the only source of active power and frequency control. LÄS MER