Enhancement of Egyptian Power System Stability Using Adaptive Fuzzy Logic Control For Power System Stabilizers And For Flexible AC Transmission Systems (FACTS)

摘要

Egyptian power system consists of two distinctrnpower pools connected by a long 500 kV line suffersrnfrom some stability problems which was led to tworncomplete blackouts. Enhancement of stability of thatrnsystem is attained by using power system stabilizersrncontrolled by local control signals. Feasibility andrnbenefits of using the new adaptive Neuro-Fuzzy logicrncontrols to create new control signals for thosernconventional power system stabilizers or for anrnappropriately sized, Judiciously located static VARrncompensator (FACT) are studied in this paper. Effectsrnof using such new adaptive controls on increasingrncritical clearing time and on transmitted power and onrnextra added energy are discussed. Influence of suchrnadaptive controls on required SVC rating for powerrnsystem stabilization is highlighted. Extra loads to bernconnected suddenly to the system without loosingrnstability are quantified.