Abstract
Concerns the on-line evaluation of an auto-tuning optimal PID automatic voltage regulator for a synchronous generator. The design of the regulator is performed directly on a non-linear laboratory model turbogenerator, using optimization techniques, and the control strategy combines automatic voltage regulation with the functions of a power system stabilizer. The PID and stabilizing signal parameters are optimized on-line in real time, using a search procedure, with linear quadratic performance index, and only impulse responses of the system are required. Appropriate hardward and software systems have been developed, and the regulator has been extensively tested on a micromachine. Results obtained for long-term operation show that the controller can provide good performance during varying operating conditions, with a wide range of disturbances. The results have been compared with those obtained under the same operating conditions using a conventional automatic voltage regulator and stabilizer.
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