A review on voltage stability analysis

The present scenario of electrical power system worldwide shows that electrical load demand is increasing day by day and in order to meet the growing electrical load demand utility companies are operating their plants at their maximum capacity. As the operating points are close to their steady state stability limits the risk of voltage collapse events throughout the world were experienced. Preventing voltage collapse occurrences in power system is a challenging task. This paper provides a review on different techniques used for determining the voltage stability margin. This study aims at revealing the basic research methodology used area of problem and the requirement of new technique. The review study covers the articles coming from major journals related with the topic including a taxonomy study and detailed investigation as to the methodologies approaches and findings of these works. The methodology followed during the conduct of this research includes a broad base of articles lying at the voltage collapse phenomenon.