Abstract
A supplementary subsynchronous damping controller is proposed for the static synchronous series compensator (SSSC) device to damp out subsynchronous oscillations in power systems with series compensated transmission lines. The design problem of the proposed controller is formulated as an optimization problem, and real coded genetic algorithm is employed to search for the optimal controller parameters. It is shown that the controller is able to stabilize all unstable modes. The IEEE Second Benchmark Model is considered as the system under study. All the simulations are carried out in MATLAB/SIMULINK environment.KeywordsSubsynchronous resonancetorsional oscillationsstatic synchronous series compensatorreal coded genetic algorithm
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