Abstract
The performance optimization of the load frequency control problem for two-area interconnected power system is investigated by employing the gravitational search algorithm based linear active disturbance rejection control approach. Firstly, the load frequency control problem of a two-area power system with two identical non-reheated turbine units is formulated, taking into account the external step disturbance and parameters perturbation. Then, the essentials of the second order process oriented linear active disturbance rejection control approach are presented, where the parameters optimization procedure based on the gravitation search algorithm is proposed. Finally, the effectiveness of the proposed approach in the load frequency control problem is validated by the given extensive simulation examples. The disturbance rejection ability and the robustness with respect to the parameter perturbation of the proposed approach are also demonstrated.
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