A BILINEAR SELF-TUNING CONTROLLER FOR MULTIMACHINE TRANSIENT STABILITY

Bilinear time-series model-based self-tuning control is proposed for a multimachine power system, controlled by a single variable series cap acitor. When the faults of concern are large and de-stabilizing, it is proposed that nonlinear model-based controllers can enhance the regio n of stability of the power system, and return the states to their sta ble equilibrium. A simple predictive nonlinear self-tuning controller using local measurements of relative rotor angles is examined. It is s hown to perform well in stabilizing different faults on a 45-bus, 17-g enerator low order model with the dynamic characteristics of the Weste rn System Coordinating Council (WSCC) system.