Fuzzy expert system using load shedding for voltage instability control

Abstract

Application of a fuzzy expert system to the power system gives a common goal in the management of power systems specially for managing the system against voltage instability. Attempts are made in this paper to control voltage instability by load shedding using a fuzzy technique as a fuzzy controller. The fuzzy logic and fuzzy set theory are applied to the problem formulated in the study system. The results of applying the proposed technique to the test system verifies its robustness and feasibility to calculate the optimum and minimum ratio of load shedding as a control to depress the voltage instability problem.