Steady-state and transient analyses of wind farm connected to an electric grid with varying stiffness

AbstractThis paper is aimed at investigating the steady state and transient analysis behaviour of a squirrel cage induction generator of wind farm connected to a variable stiffness grid using MATLAB/SIMULINK. Different types of faults including three-phase-to-ground, double-line-toground, line-line and single-line-to-ground are studied. The calculated temporal variations of speed, voltage, active power and reactive power of the generator agreed reasonably with those obtained using PSCAD for threephase and single-line-to-ground faults. The three-phase-toground is the most severe fault as expressed by the time required for the voltage to recover to its pre-fault value and the maximum current drawn by the faulted bus.