Location for stability enhancement in power systems based on voltage stability analysis and contingency ranking

Abstract

In the last few years, voltage collapse problems in power systems have been of permanent concern for electric utilities: several major blackouts throughout the world have been directly associated to this phenomenon. Voltage instability is one phenomenon that could happen in power system due to its stressed condition. The result would be the occurrence of voltage collapse which leads to total blackout to the whole system Investigation and online monitoring of power system stability have become vital factors to electric utility suppliers. Suitable preventive control actions can be implemented considering contingencies that are likely to affect the power system performance. In this paper by conducting Voltage stability and Line outage Contingency analysis the suitable location for voltage stability enhancement in a 9 bus Test systems is determined. © 2011 Springer-Verlag.