Transient Stability of Multi-Machine Wind Turbine Generators System Connected to the Grid

Abstract

Today, all the world direct towards renewable sources, because it is considered a safe energy. As a result, now the studies concentrate about the reliability and continuity of the renewable energy. Though, this thesis presents a recovery strategy that enables the system of HVDC transmission systems based on voltage source converter, which transfer electrical power from the wind turbines to the grid, to ride-through different positions of AC faults with minimum current and voltage stresses on the converter switching devices. Issue such as control strategies for a VSC-HVDC transmission system connecting offshore wind farms to the power network is discussed. A reduced network model has been implemented in MATLAB/ SIMULINK to assess control performance during the fault.