Analysis of facts devices for dynamic loads using Matlab

Abstract

The modern power system is a complex dynamic system consisting of a large number of different dynamic devices, such as synchronous machines and loads. The system is continually subjected to sudden small disturbance in load. Load parameters are generally uncertain and loads often exhibit some dynamic response. This paper investigates the effect of dynamic loads on Thyristor Controlled Series Capacitors (TCSC) and Static Var Compensator (SVC) devices. In this paper, a PI controller is used to control of SVC and TCSC using Matlab Simulink and Power System Blockset. The graphic interface of Simulink provides a user-friendly environment where the power circuit and control system are represented in the same diagram. The design and testing of Flexible AC Transmission Systems (FACTS) devices are verified using Matlab. The studied power system is a simple two buses system with the 100 km distributed parameter line. For different load levels, we examine the effects of SVC and TCSC on the load voltages.