The rapid development of power electronics technology provides exciting opportunities to develop new power system equipment for better utilization of existing systems. Such as enhancing the security, capacity and flexibility of power transmission systems. FACTS solutions enable power grid owners to increase existing transmission network capacity while maintaining or improving the operating margins necessary for grid stability. Supply of reliable, high-quality electrical energy at a reasonable cost is at the heart of the nation's economy.
Several advanced methods are developed for maintaining a high degree of power quality and reliability under a deregulated environment. At the distribution level, flexible control strategies involve computerized automation of system control devices such as capacitor banks; under load tap changing transformers (Ultc’s) and voltage regulators. In the transmission system, a new method of achieving this control is through the use of power electronics based Flexible AC Transmission System
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