Abstract
AbstractExcitation system, an integral part of the synchronous generator, performs control and protection functions that include control of voltage and reactive power. Power system stability can also be enhanced by supplying additional signal through the excitation system. This function is performed by the power system stabilizer (PSS) that generates a control signal introduced as a supplementary input into the excitation system. Due to the nonlinear characteristics, wide operating conditions, and unpredictability of perturbations in a power system, the conventional fixed parameterPSSgenerally cannot maintain the same quality of performance under all operating conditions. To improve power system performance and stability, various approaches have been proposed. An overview of the development and successful implementation of various approaches, including adaptive PSSs based on analytical and artificial intelligence techniques, is provided.
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