A novel approach for the voltage stability assessment and reactive power planning

In the present work, reactive power planning problem along with voltage stability margin is addressed by effective co-ordination of reactive power sources. Modal analysis and L-index methods are used to detect weak nodes of the system accordingly. GA (Genetic Algorithm) based optimization technique is applied for the proper co-ordination of Var sources under base and increased loading conditions maintaining voltage stability of the system. The problem is multi-objective and IEEE 30 bus system is taken as the standard system.