Essays about: "spänningsvariationer"

Showing result 1 - 5 of 6 essays containing the word spänningsvariationer.

  1. 1. Analysis of Prerequisites for Connection of a Large-Scale Photovoltaic System to the Electric Power Grid

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

    Author : Fanny Lilja; [2021]
    Keywords : solar energy; large-scale photovoltaic system; PV; Swedish power system; power output fluctuations; voltage quality; voltage variations; reactive power compensation; PSS E; solenergi; storskalig solcellsanläggning; PV; Sveriges kraftsystem; effekförändringar; spänningskvalitet; spänningsvariationer; reaktiv effektkompensering; PSS E;

    Abstract : The deployment of large-scale photovoltaic (PV) systems is rising in the Swedish power system, both in quantity and in system size. However, the intermittent characteristics of the PV production raises questions concerning the stability in the electric power grid, and power output fluctuations from the PV systems can lead to voltage quality issues. READ MORE

  3. 2. Charge into the Future Grid : Optimizing Batteries to Support the Future Low-Voltage Electrical Grid

    University essay from Linköpings universitet/Fordonssystem

    Author : Mergim Dushku; Julius Kokko Ekholm; [2019]
    Keywords : Optimization; Electric Vehicle; EV; Stationary Battery System; SBS; LV-grid; Electrical Grid; Peak Load; Voltage Variations; fmincon; Future Grid; Vehicle-to-Grid; Vehicle-to-Home; Photovoltaic; PV; Control Theory; Battery; Smart Charging; Nonlinear Programming;

    Abstract : The increase in electric vehicles and photovoltaic power production may introduce problems to the low-voltage distribution grid. With a higher number of electric vehicles, their accumulated charging power might breach the lowest allowed voltage level of the grid. READ MORE

  4. 3. Grid Capacity and Upgrade Costs

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Samantha Chen; Pontus Jaldegren; [2018]
    Keywords : Grid capacity; upgrade costs; electrical power engineering; wind power; power flow; power loss; Nätkapacitet; uppgraderingskostnader; elkraftteknik; vindkraft; effektflöde; effektförlust;

    Abstract : The aim of the study is to analyze the possibility of how and where wind farms should be integrated on the electrical grid. The challenges mainly concern grid capacity and transmission losses. Economic factors will be regarded as well. To fulfill the aim, the Skellefteälven river in Sweden is selected as study object. READ MORE

  5. 4. Mönster-elektroretinografi (PERG) på häst

    University essay from SLU/Dept. of Clinical Sciences

    Author : Linnéa Viklund; [2015]
    Keywords : mönster-elektroretinografi; mönster-ERG; PERG; retina; häst;

    Abstract : Mönster-elektroretinografi (mönster-ERG, pattern-ERG, PERG) är en elektrofysiologisk mätmetod där retinas funktion utvärderas objektivt utifrån de spänningsvariationer som fås vid stimulering med ett mönster, oftast på en bildskärm. Mätningarna av dessa elektriska signaler används för att kunna diagnosticera avvikelser och att hitta var i synsinnet ett eventuellt problem är lokaliserat. READ MORE

  6. 5. Railway power supply system models for static calculations in a modular design implementation

    University essay from KTH/Elektriska energisystem

    Author : Ronny Skogberg; [2015]
    Keywords : ;

    Abstract : Several previous theses and reports have shown that voltage variations, and other types of supply changes, can influence the performance and movements of trains. As part of a modular software package for railway focused calculations, the need to take into account for the electrical behavior of the system was needed, to be used for both planning and operational uses. READ MORE