Direct Detection of Voltage Collapse in Electrical Power System

Abstract

Voltage stability is indeed a dynamic problem. Dynamic analysis is important forbetter understanding of voltage instability process. In this work an analysis for voltagestability from bifurcation and voltage collapse point of view based on a centermanifold voltage collapse model. A static and dynamic load models were used toexplain voltage collapse. The basic equations of simple power system and load areused to demonstrate voltage collapse dynamics and bifurcation theory. Theseequations are also developed in a manner, which is suitable for the Matlab-Simulinkapplication. Detection of voltage collapse before it reaches the critical collapse pointwas obtained in simulation results.