To mitigate the adverse effects of wind power output fluctuations
low-frequency oscillations
and multi-controller coupling in power systems
this paper proposes a coordinated optimization strategy for multi-controller parameters under diverse operating conditions. Firstly
a Simulink model of the wind-PV-thermal bundled power transmission system and its controllers is established. Typical wind power output scenarios are generated using the Voronoi partition sampling method. Subsequently
the objective function for the optimization problem is formulated based on probabilistic methods
and critical controller parameters for optimization are identified via random forest regression analysis. Finally
an improved hybrid dung beetle optimizer is employed to coordinately optimize these key controller parameters across multiple operating scenarios. Simulation results on the IEEE 4-machine 2-area system and the 16-machine 5-area system demonstrate that optimizing the extracted controller parameters effectively enhances system damping. This significantly suppresses fluctuations in active power
power angles
and other system variables caused by low-frequency oscillations
thereby validating the efficacy of the proposed probabilistic optimization approach.
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