“…It is becoming increasingly important to fully utilize the existing transmission system assets due to environmental legislation, rights-of-way issues, costs of construction and deregulation policies that introduced in recent years. A number of Flexible AC Transmission System (FACTS) controllers, based on the rapid development of power electronics technology, have been proposed for better utilization of the existing transmission systems (Magaji and Mustafa, 2009;Prechanon, 2010;Zarate-Minano et al, 2010;Omar et al, 2010;Padma and Rajaram, 2011).…”