A Modified Techniques of Transmission System by Static Var Compensation (SVC) for Voltage Control

Static Var Compensation (SVC) is consists of power electronics circuits to be used with the electric power system for voltage control. SVC is considered as one of the most important and famous modules from the Flexible AC Transmission System (FACTS) devices. SVC is the economic constraints to affect the real network under variation of system operating conditions to maintain the voltage levels and to control the active and reactive power flows. The controlling system by the thyristors into the SVCs modules is more effective to provide fast-acting reactive power compensation. This paper discusses the optimum voltage control techniques using the SVC module with the transmission line to overcome the drop and the influence factors for the voltage in the power system. This paper uses the MATLAB/Simulink software to introduce the thyristors operation steps at coupling the shunt SVC module with the power system to reach the optimal compensation at the voltage drop in the power system. The simulation in this paper has been carried with IEEE-9 busbar distribution system as an example to shows the difference voltage and the power losses without and with SVC installation with the power system.