A discrete-time coordinated adaptive stabilizer for multimachine power systems

A digital PSS design technique for a multimachine power system suitable for easy integration into the power system control hierarchy at the generating plant level is presented in the paper. The adaptive inputs are obtained at each unit as feedback from local measurements, and the reference models in the proposed PSS scheme are designed to reflect the dynamic interaction between each generating unit (GU) and the multimachine system. The effectiveness of the proposed technique is demonstrated on a multimachine power system using computer simulation studies.