Power stability improvement of power utility grid using a new advanced static VAr compensator

This paper deals with the study on the application of the advanced static VAr compensator (ASVC) for the improvement of the stability margin of the power utility grid seen as a large electrical network. The ASVC is connected to the busbar before the main transformer in order to maximize the power transit with large stability margin by compensating the reactive losses. A PI controller is applied to the ASVC to compensate the reactive losses induced by the reactive elements of the electrical network. Digital simulations studies reveal the technical feasibility of using such ASVC to improve the stability of the system.