A modified pso algorithm for optimal protection capacity in optical network

A new approach based on the modified particle swarm optimization (PSO) algorithm is presented for the protection capacity optimization problem. The modified PSO algorithm combines the elitist strategy and mutation operation of the genetic algorithm (GA) which avoids premature convergence of standard PSO algorithm. The efficiency of the new method is higher than the GA owning to its simpler structure, higher speed of solution and hunting efficiency. Simulated results indicate that the near global optimal solution is easily obtained with this new method which facilitates the practical engineering realization of the algorithm.