Performance up gradation of static VAR compensator with thyristor binary switched capacitor and reactor using model reference adaptive controller

There are various static var compensator configurations available and listed in the literature. Their performances evaluated based on their voltage support, dynamic response, losses, cost, additional filter requirement, if any. In this paper, efforts made to improve performance parameter such as rise time, settling peak overshoots. A new topology with an adaptive controller is presented, which capacitor reactor banks divided binary values connected shunt. Capacitor operated by thyristorised switches. Both these closed-loop form a cascade control. Amongst these, bank operates coarse control, acts fine For enhancement, model reference used. The system identification toolbox used evaluate mathematical of plant Matlab. model's was analyzed deeply different models critical, under, overdamped. parameters overshoot reactive power swings, plotted for gains using MIT rules.Abbreviations: mp: Peak overshoot; QC: Reactive capacitor; QL: inductor; QTBSC: TBSC bank; QTBSR: TBSR tr: Rise time; ts: Settling e: Error; Gc(s): Transfer function plant; Gl(s): Disturbance Gr(s): SVC: Static VAR Compensator; t:time; TBSC: Thyristor switched TBSR: reactor; TSC: TSR: u(t): System input; v(t): disturbance; y(t): output; Ym: Reference Yp: Plant γ: Adaptive gain; θ: Theta