Voltage Stability Analysis Using the Variable Gradient Method

Abstract

Power system stability is usually the situation that a power system is in an acceptable operation state and that it is capable of returning to the normal equilibrium state after a disturbance. Voltage stability and collapses began to play a significant role in power system analysis and control as a result of energy system collapses in various places of the world. In this paper, by applying the variable gradient method to a four-bus system, the system's energy function is created and thus the system's energy level changes' effects on the system's stability is shown by using Macsyma program. Copyright (C) 2011 Praise Worthy Prize S.r.l. - All rights reserved.