SVC and STATCOM as a Voltage stability Improvement

Abstract

The study of shunt connected FACTS devices is a connected field with the problem of reactive power compensation
and better mitigation of transmission related problems in today’s world. In this paper we study the shunt operation of FACTS
controller, the STATCOM, and how it helps in the better utilization of a network operating under normal conditions. First we
carry out a literature review of many papers related to FACTS and STATCOM, along with reactive power control. With the
effect of restrictions on building new linesandgrowing demand, Transmission networks of modern power systems are
becoming more stressed. One of the solutions of such a stressed system is the Flexible actransmission system (FACTS)
devices.From the family of flexible AC transmission systems (FACTS), the static synchronous compensato r (STATCOM) is a
shunt device of this family.By the controlling an amount of reactivepower absorbed from or injected into power system, the
STATCOM regulates its terminal voltage.STATCOM absorbs reactive power,when the voltage of system is high and it
generates reactive power,when the voltage of system is low.In this paper,performance of SVC and STATCOM is done. The
simulation result proves the effectiveness of these devices in improving Voltage stability.