FUNCTIONAL REVIEW OF THE OPERATIONAL CHARACTERISTICS OF THYRISTOR SWITCHED CAPACITOR (TSC) IN ELECTRIC POWER SYSTEM IN ELECTRIC POWER SYSTEM

Abstract

This work is aimed at revealing the operational characteristics of thyristor switched capacitor in electric power network. The FACTS device is modeled to show the various parameters that compose the equipment and whose availability in the device immensely constitutes the proficiency of the system component for power system capacitive and inductive compensation. The steady state functional condition of the Facts controller is considered, examining the behavior of the device when the thyristors are switched on and current assumed to flow into the component with the device terminals connected to source. The capacitor voltage is discovered in this state to be a direct function of the product of ac source voltage and ratio of its impedance to difference of its own potential difference and the connected reactor’s impedance. The dynamism in its functionality is technically evaluated with attention on the effect of the off state of its thyristor component on the capacitor at zero crossing point of power quantity. At this point, the full capacity charged capacitor is discussed, taking a look at the zero to peak varying ac voltage on the thyristor switches. There are enough theoretically self-explanatory graphical illustrations that sufficiently give some narrative explications within the brim capacity of this work. A thorough discussion of transient effect as generated by the TSC in the system through the combined operation of the capacitor, limiting reactor and the component damper is reflected in this work