Sökning: "Transmission losses"

Visar resultat 1 - 5 av 210 uppsatser innehållade orden Transmission losses.

  1. 1. Förbikoppling av stationer vid reinvesteringsprojekt i transmissionsnätet

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Aron Johanson; [2023]
    Nyckelord :Mobile integrated gas-insulated switchgear; Elförsörjning; Förbikoppling; Kraftsystem; Ledningssäng; Nätstation; Nätutveckling; Reinvestering; Stationsförnyelse; Ställverk; Svenska kraftnät; Transmissionsnät;

    Sammanfattning : Svenska kraftnät is responsible for the operation and development of the Swedish transmission grid. A large number of substations in the transmission grid are approaching their expected service lifetime and must be renewed in the coming years. When renewing substations, total and partial outages in operation are often unavoidable. LÄS MER

  3. 2. Performance Evaluation of LoRa networks for Air-to-Ground Communications

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

    Författare :Kiana Khorsandi; Sareh Jalalizad; [2023]
    Nyckelord :IoT; LPWAN; LoRaWan; UAV; LAP; Bit error rate; Line of sight;

    Sammanfattning : The current focus on the Internet of Things (IoT) has led to the emergence of many network scenarios with unlimited use cases, including smart homes, smart cities, smart agriculture, and more. Unmanned aerial vehicles (UAVs), also known as drones, have become increasingly popular due to their versatility and ability to collect and transmit data through various sensors and cameras. LÄS MER

  4. 3. Energy audit of a single-family house in a city in the middle of Sweden

    Magister-uppsats, Högskolan i Gävle/Energisystem och byggnadsteknik

    Författare :Daniela Valentina García Gimeno; [2023]
    Nyckelord :energy audit; building energy efficiency; building envelope; renewable sources; windows efficiency; insulation of houses in Sweden;

    Sammanfattning : The world is currently submerged in two big problems: supply energy crisis and climate change. It is clear that society has to do its best to overcome these challenges, and one effective way to mitigate their effects is by conducting an energy audit, which helps to identify the weaknesses and strengths of the buildings, enabling improvements in their thermal efficiency. LÄS MER

  5. 4. 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

  7. 5. Påverkan av elbilar på Sveriges transmissionsnät 2030

    M1-uppsats, Linköpings universitet/Fordonssystem

    Författare :Najafi Omid; Rajabi Elias; [2023]
    Nyckelord :Elbilar; transmissionsnät; effektöverföring; elektroteknik;

    Sammanfattning : Antal nyregistrerade laddbara personbilarbilar ökar märkbart för varje år.Enligt en prognos kommer cirka 2.5 miljoner laddbara bilar vara i trafik iSverige år 2030. Detta motsvarar hälften av personbilsflottan idag. LÄS MER