Abstract
Voltage stability is indeed a dynamic problem. Dynamic analysis isimportant for a better understanding of voltage instability process. In this workan analysis of voltage stability from bifurcation and voltage collapse point ofview based on a center manifold voltage collapse model. A static and dynamicload models were used to explain voltage collapse. The basic equations of asimple power system and load used to demonstrate voltage collapse dynamicsand bifurcation theory. These equations are also developed in a manner, which issuitable for the Matlab-Simulink application. As a result detection of voltagecollapse before it reach the critical collapse point was obtained as original point.
