A local search strategy for power system voltage control

A new local search technique based on control information searched by multiobjective optimization is developed for the bus voltage recovery of power systems. The order of priority that is assigned to the control devices and their movements are extracted from non-dominated solutions. On the basis of the optimized order of control devices, a new local search can then be applied to yield a feasible control solution. This is a very effective and practical way for coping voltage instability problems of large scale power systems. The proposed optimization scheme was implemented and verified by simulation of a realistic 6-bus power system.