Dynamic Reactive Power Compensation for voltage support using Static VAR Compensator (SVC) In Saudi Arabia

Abstract

The Saudi Electricity Company (SEC) intends to improve the rapid reactive power voltage support in the Kingdom by installing several Static VAR Compensator systems in the transmission network as a part of the Dynamic Reactive Power Compensation (DRPC) project. This article relates to the 450 MVAr (capacitive) to 150 MVAr (inductive) DRPC to be installed at the Qaisumah substation at 115kV level. The requirement for SVC in the Qaisumah region is based on the reactive power support to maintain the post fault voltages at the pre-fault values and prevent from voltage collapse due to the contingency conditions and SLG fault. The proposed DRPC must provide reactive power support during different network disturbances and accelerate the voltage recovery process. The machine model available in the PSS/E library will be used in this article as a SVC model. In this article, the power system and SVC model is constructed in Power System Simulator for Engineers (PSS/E) environment. The result of this article shows that the use of SVC make good impact on damping the system oscillations and provide the good voltage profile as compare to without SVC.