Enhancement of Transient Stability Based on the Critical Energy Sensitivity

Abstract

This paper presents a sensitivity-based approach for structural control of electric power networks using FACTS (Flexible AC Transmission System) devices in order to improve transient stability margin. It is based on the sensitivity analysis of critical energy of TEF (Transient Energy Function). The control strategy problems are formulated as optimization problems. Also, techniques employing Neural Network to compute the sensitivity, and using Genetic Algorithms to sovle the optimization problems are presented. A related practical application to a 39-bus test system follows and shows that the structural control of power networks is effective for the enhancement of power system transient stability.