Optimal reactive power dispatch using an adaptive genetic algorithm

This paper presents an adaptive genetic algorithm (AGA)for optimal reactive power dispatch and voltage control of power systems. In the adaptive genetic algorithm the probabilities of crossover and mutation, p(c) and p(m), are varied depending on the fitness values of the solutions and the normalized fitness distances between the solutions in the evolution process to prevent premature convergence and refine the convergence performance of genetic algorithms. The AGA applied for optimal power system reactive power dispatch is evaluated on an IEEE 30-bus power system in which the control of bus voltages, tap position of transformers and reactive power sources are involved to minimize the transmission loss of the power system. (C) 1998 Elsevier Science Ltd. All rights reserved.