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. This issue becomes more significant high penetration of a photovoltaic (PV) network. A conventional detection active filter operates as similar conductance for all frequencies resolve this problem whether fixed command or an automatic gain adjustment control. However, its filtering capability is impeded by the mismatch between and radial line, distortion may still be significant. paper proposes discrete frequency tuning suppress harmonics. The variable each individual frequency. Each dynamically adjusted according corresponding installation point response increase decrease nonlinear loads, variation resonant system. mismatching feeder impedance can avoided effectively. Therefore, maintained at allowable level throughout with lower peak current rms filter, loads installed various locations receive uniform waveform.