Suppression of flickers in an arc-furnace supply system by an active capacitance-a novel voltage stabilizer in power systems

Recently, attention has been paid to a series active filter (SAF) as an isolator between source and load to avoid antiresonance or series resonance. Here, the authors propose a novel control strategy to stabilize a power system voltage in which an SAF operates as an active capacitance and compensates voltage drops due to a source impedance. The authors have implemented a simulation and an experiment based on the strategy. They showed satisfactory results and the strategy will be applicable to flexible AC transmission system (FACTS).<>