A self-adaptive chaotic particle swarm algorithm for short term hydroelectric system scheduling in deregulated environment

This paper proposes a short term hydroelectric plant dispatch model based on the, rule. of maximizing the benefit. For the optimal dispatch model, which is a large scale nonlinear planning problem with multiconstraints and multi-variables, this paper proposes a novel self-adaptive chaotic particle swarm optimization algorithm to solve the short term generation scheduling of a hydro-system better in a deregulated environment. Since chaotic mapping enjoys certainty, ergodicity and the stochastic property, the proposed approach introduces chaos mapping and an adaptive scaling term into the particle swarm optimization algorithm, which increases its convergence rate and resulting precision. The new method has been examined and tested on a practical hydro-system. The results are promising and show the effectiveness and robustness of the proposed approach in comparison with the traditional particle swarm optimization algorithm. (c) 2005 Elsevier Ltd. All rights reserved.