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Showing result 1 - 5 of 25 essays matching the above criteria.

  1. 1. Simulation Model - Grid Connection of a Marine Current Power Turbine

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Muhammad Farooq Mazhar; [2023]
    Keywords : Power electronics; Filters; Marine-current turbine; Grid connection; Damping;

    Abstract : Renewable energy is a reliable source of energy and can provide promising solution to the on-going energy crisis if harnessed properly. Some of the common energy sources in which a lot of research is invested include wind,solar, water and biofuels. READ MORE

  3. 2. Study on feasibility of small-scale pumped hydro storage- A case study in Sweden

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Prashant Niroula; [2023]
    Keywords : energy storage; pumped hydropower; electricity market; investment; new technologies; feasibility; Technology and Engineering;

    Abstract : The European union has been aggressively pushing forward with policies favoring renewable sources of energy. As a result, the share of intermittent renewables in the European power grid is rising and is expected to grow even more in the coming decade. The Swedish energy agency also forecast huge growth in wind power. READ MORE

  4. 3. Damping of sub-synchronous control interactions with a STATCOM : Wind farms & series compensated power lines

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Leonardo Alvarez Urrutia; [2022]
    Keywords : Sub-Synchronous Control Interactions; Power Systems; STATCOM; Network Stability; Doubly-Fed Induction Generator; Impedance-Based Stability Analysis;

    Abstract : The power converter is one of the key components in power system applications such as high voltage direct current (HVDC) systems and the grid connection of intermittent sources such as wind and solar power. However, the increased penetration of converter-based generation introduces challenges, such as sub-synchronous interaction between the converter control system and the grid. READ MORE

  5. 4. Inclusion of Wind Turbines into Frequency Support Services : Exploring frequency stability issues and comparing regulation power market products

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Oskar Andersson; [2021]
    Keywords : Frequency Containment Reserve; Frequency Restoration Reserve; Fast Frequency Restoration; Synthetic Inertia; Variable Speed Wind Turbine;

    Abstract : There is a trend in Sweden towards increasing the electricity production from renewable energy sources in the electric grid. The increased share of renewables could be seen as essential for Sweden to be able to meet the obligated climate goals. READ MORE

  6. 5. Verification of the local similarity theory above forests

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Yasmin Hubmann; [2021]
    Keywords : Forest Meteorology; Boundary Layer Meteorology; Wind Energy; Local Similarity Theory; Monin–Obukhov Similarity Theory; Flux-Gradient Formulation; Richardson Number Formulation; Turbulence Statistic; Rotor Equivalent Wind Speed; Grenzschicht-Meteorologie; Forstmeteorologie; Windenergie; Lokale Ähnlichkeitstheorie; Monin–Obukhov’sche Ähnlichkeitstheorie; Fluss-Gradient-Ähnlichkeit; Gradient-Richardson-Zahl Beziehung; Turbulenzcharakteristiken; Rotor-äquivalente Windgeschwindigkeit; Skogsmeteorologi; Gränsskiktsmeteorologi; Vindenergi; Lokal Similaritetsteori; Monin–Obukhov Similaritetsteori; Flöd-Gradient Relation; Richardson Gradienttal Relation;

    Abstract : In this study, the local similarity theory functions were calculated with two different approaches and on the other hand the mean hub height wind speed was compared with the rotor equivalent wind speed. Both calculations are based on two independent data-sets from measurement campaigns Hornamossen and Ryningsnäs which were conducted in the south of Sweden between May 2015 and June 2017, and November 2010 and February 2012. READ MORE