Stability and power quality enhancement using a coordinated capacitive compensation and tuned arm filter

This paper presents a nonlinear dynamic error driven scaled error-controller for coordinated static series capacitor compensator SSCC and tuned arm filter TAF, for the enhancement of voltage, transient stability, capacity of tie line power transfer and the power quality. The proposed self adjusting Tri-loop error scaled controller is based on the load voltage, RMS source current and the dynamic current ripple deviation signals. The proposed study system is a three phase source, a frequency dependent transmission line model, a nonlinear load comprising an induction motor and the 6 pulse thyrister converter load. The digital simulation is carried out in time domain as well as in frequency domain using the special simulation software PSCAD/EMTDC.