Voltage Stability Improvement Using Load Shedding and Static VAR Compensator (SVC): Study Case of Senayan-Sambas Power System

Disturbances in the power system may lead to voltage instability in the system. This paper discussed voltage stability when anticipating disturbance by load shedding operation combined with Static VAR Compensator (SVC). Load shedding scheme with voltage relay is used when there is disturbance such as loss of generation. In the case of the load shedding is forbidden due to the existence of high priority loads, then it is required to install the SVC to overcome the disturbance. SVC can be used to minimize load shedding for power system disturbance anticipation. In the simulation, it is shown that the combination of the load shedding operation and the utilization of SVC with 30 MVAR capacitive rating can save the high priority load of 15 MVA.