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Nowadays, researchers all around the world are looking for alternative option for fossil energy resources by renewable and sustainable energies. Wind energy as one of the cheapest and sustainable energy sources has drawn attentions among energy decision makers and researchers. In this paper, we studied the wind energy potentiality of the Kuala Terengganu, Malaysia by means of statistical analysis of 2008 and 2009 wind data set and developed of site power curve. The maximum achievable energy production in this area is 12.8MW/year and the capacity factor is 9.16%. In conclusion, this site could not be considered as the proper site for large scale wind harnessing.

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With growing electricity demand and environmental concerns, renewable energy especially wind energy has been moved into the center of concentration recently. The wind energy conversion (WECS) system has connected to the power grid to provide the consumer electricity demand. The various area where researchers have underwritten could be classified in various methods. The main unease of many previous researches related to power quality improvement for instance reactive power compensation, voltage regulation, total harmonic distortion reduction and stability of the system. Various proposed control schemes and techniques are reviewed in this paper which focused on grid integration of large wind turbines to preserve the power quality in acceptable limit.

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