Abstract

In this paper a new particle swarm search algorithm is proposed to solve the optimal reactive power dispatch ORPD Problem The ORPD problem is formulated as a nonlinear constrained single-objective optimization problem where the real power loss and the bus voltage deviations are to be minimized separately As an optimization technique particle swarm optimization PSO has obtained much attention during the past decade It is gaining popularity especially because of the speed of convergence and the fact that it is easy to realize To enhance the performance of PSO an improved hybrid particle swarm optimization IHPSO is proposed to solve complex optimization problems more efficiently accurately and reliably It provides a new way of producing new individuals through organically merges the harmony search HS method into particle swarm optimization PSO During the course of evolvement harmony search is used to generate new solutions and this makes IHPSO algorithm have more powerful exploitation capabilities In order to evaluate the performance of the proposed algorithm it has been tested on IEEE 30 bus system