Performance Analysis of Grid Connected Wind Turbine Generators under System Disturbances Using MATLAB
Chuks Emu *
Department of Electrical Engineering, Niger Delta University, Bayelsa, Nigeria.
Adebayo D. Adeniyi
Department of Electrical Engineering, Niger Delta University, Bayelsa, Nigeria.
Kenneth Ainah
Department of Electrical Engineering, Niger Delta University, Bayelsa, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Wind energy is considered a promising clean energy source of power generation leading to rapid development of wind turbine generators as well as large scale grid integrations. The grid penetrations come with challenges associated with stable power system operations. In this study, the stability of 11kV, 50Hz, grid-connected, 30 MW wind energy conversion system using permanent magnet synchronous generator (PMSG) and doubly fed induction generator (DFIG) wind turbines were examined under steady state and transient operating conditions by MATLAB simulations and the results under the studied conditions were compared for the two wind turbine generator types, for better performances under similar conditions. The introduction of system disturbances on the PMSG and DFIG system led to output power, voltage and current distortions on both turbines network with the DFIG showing more significant impacts. The PMSG was able to recover post fault, but the DFIG did not recover fully. The results indicated that PMSG systems provide better fault ride-through (FRT) capability and voltage stability than the DFIG, making it more robust against grid disturbances.
Keywords: MATLAB, PMSG, DFIG, FACTS