Instantaneous Reactive Power Compensation and Voltage Stability with Thyristor Switch Capacitor (TSC) and Static Var Compensator (SVC)

Abstract

Modern Electrical power transmission system is developing and load demands are increasing, problems of voltage flicker and voltage stability has become important subjects in Power System. Now-a-days Flexible AC Transmission System (FACTS) has become a subject of interest for power System Engineers. In this paper, effects of Thyristor Switch Capacitor (TSC), which is one of FACTS Devices, on load voltage are estimated and checked. By this Technology large and slow, old operating Circuit Breakers are eliminated. The modeling and Simulation of TSC are verified using MATLAB 7.8, SimPower system Block set. Proposed technology allows the steady state and dynamic performance of TSC on transmission system by regulating Voltage through generating or absorbing reactive power and accordingly Compensation is carried out.

IndexTerms: receiving  end voltage (Vr); SVC;  gate pulse; sending end voltage(Vs) and Thyristor Switched Capacitor(TSC); SVC  Controller; Voltage regulator; MATLAB