A discrete frequency tuning active filter for power system harmonics

摘要: Severe voltage distortion due to power system harmonic resonance has been reported in recent years. The termination installation active filter was presented resolve this problem. It operates as similar conductance for all frequencies whether a fixed command or an automatic gain adjustment control. Therefore, its filtering capability is impeded by mismatching between the and radial line, may still be significant throughout line. Distributed of filters previously can address issue effectively, but practical application limited their cost-ineffectiveness. This paper proposes discrete frequency tuning suppress harmonics. various individual frequency. Each dynamically adjusted according corresponding point response increase decrease nonlinear loads, variation resonant system. problem feeder avoided effectively. maintained at allowable level with lower peak current rms consumption, loads installed receive more uniform waveform. Operation principles are explained detail, computer simulations experimental results validate effectiveness proposed approach.