PQ for the Grid Supported with Wind Turbines

Abstract

Wind energy is considered as one of the clean and renewable energy sources that can be used in the extraction of electric energy. This draws attention to increase the usage of such energy for electricity generation. The operation of Wind Energy Conversion System (WECS) introduces power quality challenges. These challenges motivate many researchers to overcome these power quality issues especially total harmonic distortion. In this work, the impact of connecting wind farms with different conversion systems on the quality of the produced power was studied. In the first part of the thesis, the power quality criteria will be presented focusing on the harmonics emissions, then the international standard IEEE519-2014, IEC 61400-21 and the national Egyptian wind farm grid connection code are presented. The Second part discusses wind energy conversion systems in details. The various types of wind turbines are studied. The different technologies of the commonly used generators in converting rotational energy of the wind to electrical power energy are also discussed showing the merits and demerits of each.