Essays about: "wind power"

Showing result 1 - 5 of 711 essays containing the words wind power.

  1. 1. Wind Forecasts Using Large Eddy Simulations for Stratospheric Balloon Applications

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Ludvig Sjöberg; [2019]
    Keywords : Weather Research and Forecasting Model; Large Eddy Simulation; Microscale Meteorology;

    Abstract : The launch of large stratospheric balloons is highly dependant on the meteorological conditions at ground level, including wind speed. The balloon launch base Esrange Space Center in northern Sweden currently uses forecasts delivered through the Swedish Meteorological and Hydrological Institute to predict opportunities for balloon launches. READ MORE

  2. 2. Production optimization for district heating : Short-term planning of district heating grid in Gävle, Sweden

    University essay from Mälardalens högskola/Akademin för ekonomi, samhälle och teknik; Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Author : Nicolas Lindgren; Karl Brogren; [2019]
    Keywords : Short-term planning; Optimization; District heating; Linear programming; Mixed integer non-linear programming; Branch and bound; Heat storage; MATLAB; TOMLAB;

    Abstract : Energy systems with a high portion of renewable energy from wind and solar power can suffer from fluctuations in production due to weak winds or cloudy weather, which may affect the electricity price. When producing heat and power in a combined heat and power plant, an additional heat storage tank can be used to store the heat surplus which is obtained when the power production is high, and the heat demand is low. READ MORE

  3. 3. Sound propagation modelling with applications to wind turbines

    University essay from KTH/Mekanik

    Author : Julius Fritzell; [2019]
    Keywords : Sound propagation; Wind turbines; Wave equation; Helmholtz equation; Fourier transform; Chebyshev polynomials.;

    Abstract : Wind power is a rapidly increasing resource of electrical power world-wide. With the increasing number of wind turbines installed one major concern is the noise they generate. Sometimes already built wind turbines have to be put down or down-regulated, when certain noise levels are exceeded, resulting in economical and environmental losses. READ MORE

  4. 4. The Impact of Voltage Dip Characteristics on Low Voltage Ride Through of DFIG-based Wind Turbines

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

    Author : Cheng Chen; [2019]
    Keywords : DFIG; wind power; low voltage ride through; power quality; voltage dip;

    Abstract : In last decade, there is a large increase in installed capacity of wind power. Asmore wind power is integrated into utility networks, related technologychallenges draw much attention. The doubly fed induction generator (DFIG) isthe mainstream choice for wind turbine generator (WTG) in current market andthe object of this thesis. READ MORE

  5. 5. Power System Protection Modelling with IEC 61850 and IEC 61499

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

    Author : Francisco De Lima; [2019]
    Keywords : ;

    Abstract : The nature of the power system is changing; what was once a clearlydened generation-transmission-distribution-consumer power ow is nowshifting towards a distributed infrastructure, with great amounts of variablerenewable sources in the system. The penetration of alternative energieslike solar and wind have represented a game changer for the electricpower industry, diminishing the traditional dominance of fossil fuel basedsources, and moving towards a more renewable mixture. READ MORE