Quantum-behaved particle swarm optimization algorithm for economic load dispatch of power system

Quantum-behaved particle swarm optimization algorithm is firstly used in economic load dispatch of power system in this paper. Quantum-behaved particle swarm optimization algorithm is the integration of particle swarm optimization algorithm and quantum computing theory The superposition characteristic and probability representation of quantum methodology are combined into particle swarm optimization algorithm This can make a single particle be expressed by several certain probability states. And the quantum rotation gates are used to realize update operation of particles. The algorithm is simulated by two cases, which validates it can effectively solve economic load dispatch problem. Though performance comparison, it is obvious the solution is superior to that of improved particle swarm optimization algorithm and other optimization algorithms. (C) 2009 Elsevier Ltd. All rights reserved.