Facts - Flexible AC Transmission System

Flexible AC Transmission Systems (FACTS) are power-electronic based devices used on alternating current power grids to increase power transfer capacity, improve stability, and dynamically control voltage. Types - series, shunt, combined series-series, and combined series-shunt controllers. 1. Series Connected Controllers & Function: TCSC (Thyristor-Controlled Series Compensator): SSSC (Static Synchronous Series Compensator): 2. Shunt Connected Controllers & Function: SVC (Static Var Compensator): STATCOM (Static Synchronous Compensator):