Description of the new RAS to be installed in the power system of Uruguay

This paper describes the mechanism by which the new Remedial Action Scheme (RAS) to be installed in Uruguay determines corrective actions for major single and multiple contingencies in the 500kV system. The general mechanism is divided into 8 logics that calculate automatically without operator intervention necessary load shedding to balance demand with generation or eliminate overloads. Also determines the disconnection of stations to achieve the load shedding, lines to separate systems or isolate small zones and shunt capacitive compensation for voltage control. The system also calculates the required change in the power exchange in the HVDC link between Uruguay and Brazil.