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Wide-area PSS (power system stabilizer) and HVDC (High voltage direct current) modulation are effective damping controllers in power system. With conventional parameter tuning method, the damping of the non-dominate modes would be impaired or new poor damping mode would be triggered. In this paper, the CPSO (chaotic particle swarm optimization) algorithm is used to tune the parameters of damping controller. The aim of the optimization is to provide desired damping ratio for all oscillation modes. A case study verifies the effectiveness of the proposed parameter optimization method.

CPSO algorithm based parameter optimization for power system damping controllers