Enhancing Power System Stability Using Static Var Compensator

Abstract

The most common problem in a heavily loaded electrical network is voltage disparity, due to continuous load variations. The continuous increase in energy demand requires that a methodology be developed to be able to meet the energy demand. Therefore, such devices are needed, which can minimize energy loss and voltage drop in the power supply network. FACTS devices are a valuable option for improving voltage drop and reactive power in place of capacitors and shunt reactors. This article investigates the effects of the Static Variation Compensator (SVC) on the voltage stability of a power system. This paper will discuss and demonstrate how SVC has been successfully applied to the power system to effectively regulate the system voltage. One of the main reasons for installing an SVC is to improve dynamic voltage control and thus increase the load capacity of the system. This article introduces SVC modeling and simulation in MATLAB / Simulink. In this article, an SVC is used to regulate the voltage in a power system. When the system voltage is low, the SVC generates reactive power (capacitive SVC). When the system voltage is high, it absorbs reactive power (inductive SVC). SVC is rated +100 Mvar capacitive and 50 Mvar inductive. SVC more effectively improves voltage stability and increases transmission capacity in a power system.