A novel FACTS hybrid modulated filter/capacitor compensator

In this paper, a novel Switched/Modulated C type Filter/Capacitive-Compensator developed by the First Author is presented and digitally validated for smart grid applications. The proposed FACTS filter/compensation device comprises a hybrid series and shunt switched capacitor banks installed in series with the transmission line and in shunt at Generator bus. This hybrid filter/compensator scheme is controlled by a novel dynamic time-scaled and multi-regulator/ multi-loop error driven inter-coupled weighted modified PID controller. The effectiveness of the proposed FACTS hybrid series-parallel device for a Single Machine-infinite bus SMIB-study system, with pulse width modulated switching strategy is validated using the MATLAB-Simulink digital simulation software environment. The coordinated, inter-coupled dynamic controller scheme ensures the FACTS filter/compensation device effectiveness in reducing inrush current conditions, transient voltage excursions, improving voltage stabilization, regulating feeder voltage, reducing total harmonic distortion, and improving power factor at both generator and load buses. The unified SMIB-study system with the inserted FACTS device is validated for normal operating conditions, open circuit and short circuit fault conditions, load-excursions, and load rejections.