Optimal load shedding strategy based on particle swarm optimization

This paper proposed a new optimization model to minimize power loss and the load curtailments necessary to restore the equilibrium of operating point. The solution algorithm is based on the particle swarm optimization (PSO) method in which the load shedding would be considered as the penalty in the optimization cost function. The aim function would be optimized for minimum power loss under normal operating conditions and minimum load shedding during emergency conditions. In contrary to the other load shedding strategies, there is no limitation in where the load could be shedding and how much could be shedding. Furthermore, this algorithm has the advantages of PSO method. That is this algorithm doesn´t require the gradient information, and has better global search ability. The effectiveness of this model is verified by the simulation results concerning the IEEE 30-bus system.