Sökning: "Högspänningsteknik"

Hittade 2 uppsatser innehållade ordet Högspänningsteknik.

  1. 1. Monitoring of Partial Discharges on Cable Terminations : An experimental approach to evaluate non-conventional online PD measurement techniques

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

    Författare :Tony Sibo; [2023]
    Nyckelord :Monitoring; Partial discharges; Medium-voltage cable terminations; Sensor performance; Reliability evaluation; Infrared camera IR-camera ; Ultrasonic emission sensor AE-sensor ; Temperature and relative humidity sensor TRH-sensor ; High frequency current transformer HFCT ; Transient earth voltage antenna TEV-antenna ; Conventional VS non-conventional PD measurement techniques; Övervakning; Partiella urladdningar; Mellanspänningskabelslut; Evaluering av sensorprestanda; Utvärdering av systemets tillförlitlighet; Infraröd kamera; Ultraljudssensor; Temperatur- och relativ fuktighetssensor; Högfrekvent strömtransformator; Transient jordspänningsantenn; Konventionella vs icke-konventionella mättekniker;

    Sammanfattning : The transmission of electric power over long distances has historically posed challenges. However, the advent of high-voltage engineering has not only addressed distance barriers and power losses in electricity transmission and distribution, but it has also significantly improved the efficiency and transmission capacity of power grids. LÄS MER

  3. 2. Modeling and OpenFOAM simulation of streamers in transformer oil

    Master-uppsats, Institutionen för fysik, kemi och biologi; Tekniska högskolan

    Författare :Jonathan Fors; [2012]
    Nyckelord :Computational Physics; High voltage; OpenFOAM; Streamer; Electric insulation; Electrodynamics; Finite Volume Method; Beräkningsfysik; Högspänningsteknik; OpenFOAM; Streamer; Elektrisk isolation; Elektrodynamik; Finita volymsmetoden;

    Sammanfattning : Electric breakdown in power transformers is preceded by pre-breakdown events such as streamers. The understanding of these phenomena is important in order to optimize liquid insulation systems. Earlier works have derived a model that describes streamers in transformer oil and utilized a finite element method to produce numerical solutions. LÄS MER