Sökning: "Grid Code"

Visar resultat 1 - 5 av 46 avhandlingar innehållade orden Grid Code.

  1. 1. Grid Code Testing of Wind Turbines by Voltage Source Converter Based Test Equipment

    Författare :Nicolas Espinoza; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grid Code; Low Voltage Ride Through LVRT ; Discrete Control; Wind Power; Voltage Source Converter VSC ; Grid Emulation.;

    Sammanfattning : Wind energy is expected to play a crucial role in the energy mix in the future society with limited access to fossil fuels. Wind turbines with larger power rating are being installed every year, making possible to extract more energy from wind. LÄS MER

  2. 2. Wind Turbine Characterization by Voltage Source Converter Based Test Equipment

    Detta är en avhandling från Gothenburg : Chalmers tekniska högskola

    Författare :Nicolas Espinoza; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grid Integration; Frequency Scan; Discrete Control; Wind Power; Grid Emulation; Voltage Source Converter VSC ; Grid Code; Low Voltage Ride Through LVRT ;

    Sammanfattning : In countries where wind power has become a relevant part of the total generated electrical power, transmission system operators (TSOs) have included in their Grid Codes specific technical requirements for interconnection of wind power plants. Some Grid Codes demand specific testing procedures in order to verify the fulfilment for their requirements. LÄS MER

  3. 3. Input Calibration, Code Validation and Surrogate Model Development for Analysis of Two-phase Circulation Instability and Core Relocation Phenomena

    Detta är en avhandling från Stockholm : Kungliga Tekniska högskolan

    Författare :Viet-Anh Phung; KTH.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Reactor system code; input calibration; code validation; surrogate model; two-phase circulation flow instability; in-vessel core relocation; genetic algorithm; artificial neural network; Reaktorsystemkod; indata kalibrering; kodvalidering; surrogatmodell; två-fas cirkulationsflöde; instabilitet; härdrelokering i reaktortanken; genetisk algoritm; artificiella neurala nätverk; Physics; Fysik;

    Sammanfattning : Code validation and uncertainty quantification are important tasks in nuclear reactor safety analysis. Code users have to deal with large number of uncertain parameters, complex multi-physics, multi-dimensional and multi-scale phenomena. LÄS MER

  4. 4. Voltage stability issues related to implementation of large wind farms

    Detta är en avhandling från Stockholm : Kungliga Tekniska högskolan

    Författare :Marcia Martins; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; grid code; voltage collapse; fixed speed wind turbine; voltage dip; short-term voltage stability; long-term voltage stability; wind park; voltage drop; wind farm; voltage stability;

    Sammanfattning : .... LÄS MER

  5. 5. Fault Behavior of Wind Turbines

    Detta är en avhandling från Stockholm : Kungliga Tekniska högskolan

    Författare :Francesco Sulla; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind Turbines; Short-Circuit Currents; Doubly-Fed Induction Generator; Grid Fault Ride-Through; Voltage Support; Weak Grid;

    Sammanfattning : Synchronous generators have always been the dominant generation type in the grid. This fact affected both planning and operation of power systems. With the fast increase of wind power share in the grid in the last decade, the situation is changing. In some countries wind power represents already a consistent amount of the total generation. LÄS MER