Fuzzy Logic Control Application to Enhance Voltage Stability of the Electric Power Systems

This paper develops an integrated strategy for maintaining voltage stability for online applications. The proposed strategy employs real time data in the computation of a voltage stability index for voltage stability monitoring and control. The index chosen allows for the fast evaluation of the voltage stability margin for real-time assessment. A fast control operation based on fuzzy logic control is used to determine the VAr compensation required for the mitigation of occurrences of voltage instability.