Optimal reactive power allocation using PSO-DV hybrid algorithm

The reactive power allocation aspect has received considerable attention in present day power system operation and control. At heavy/light load periods, voltage control is provided by the controllable reactive sources, which are scattered throughout the transmission network, function in co-ordination. Reactive power dispatch problem can be formulated as a nonlinear constrained optimization problem. This paper presents a Particle Swarm with Differentially perturbed Velocity (PSO-DV) hybrid algorithm for optimal reactive power dispatch and voltage control of power systems. The PSO-DV is applied for optimal power system reactive power dispatch on an IEEE 30-bus 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. The simulation results show the effectiveness and robustness of the proposed approach.