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

Recently, a good deal of attention has been paid to series active filters (SAF) as an isolator between source and load as a means of avoiding an anti-resonance, or series resonance. Here, the authors propose a novel control strategy to stabilize power system voltage in which an SAF operates as an active capacitor and compensates for voltage drops due to a source impedance. The authors have conducted a simulation and an experiment based on the strategy. The research showed satisfactory results and the authors conclude that the strategy could be applied to flexible AC transmission systems (FACTS)