Improving the Voltage Stability and Performance of FACTS Controller in Transmission Line Network

Abstract

Conventionally Shunt Compensation is used to increase the transfer capability of a transmission line. By using FACT'S controllers one can manage the variables such as voltage magnitude and phase angle at selected bus and line impedance. Objective of this paper is to recover dynamic voltage control and consequently increasing system load ability for 50 Hz Frequency. Now a day, five well known FACT'S devices generally used for this purpose. These FACT'S devices are (SVC) Static VAR Compensator, (TCSC) Thyristor Controlled Series Capacitor, (STATCOM) Static Synchronous Compensator, and (UPFC) Unified Power Flow Controller and (SSSC) Static Synchronous Series Compensator. The voltage drop occurs when a system is loaded beyond its highest load ability point, then many investigation methods have been projected for the study of this difficulty. Mainly of These techniques are based on the classification of system stability. These stable points are typically referred as points of voltage collapse. This paper present modeling and simulation of STATCOM & SVC in Matlab Simulink for dynamic voltage performance of transmission line network