Voltage Stability by Reactive Power Rescheduling Using PSO Algorithm

AbstractVoltage stability is a major issue in a power system and in this paper, generator reactive power rescheduling is used for voltage stability enhancement without additional installation cost. Due to system disturbances the active power as well as reactive power flows changes. Generators being always connected to the system reactive power rescheduling of generators can be effectively done. The optimum values of rescheduling is found using Particle Swarm Optimization (PSO) algorithm. The procedure is simulated with an objective of minimizing total reactive power lost in the system with constraints of load balance, bus voltages with suitable limits, and real and reactive power outputs of generators within the maximum and minimum load. The simulations are done using MATLAB