Development of real time digital simulator for self-commutated SVC to suppress voltage flicker

This paper deals with real-time simulation of a self-commutated static var compensator (SVC) system for steel plants with electric arc furnaces (EAFs). A voltage flicker often occurs due to the unsteady current and changes in reactive power. Simulation of the flicker suppression system is quite complicated, and new simulation techniques should be developed. We constructed a main circuit and control system models of an SVC for real-time simulation with RT-LAB^®. The real-time simulation results were compared with actual operational data of a steel plant system equipped with two furnaces. Finally, we showed that we successfully developed a real-time simulation system for SVC systems.