Study on a control method of PAPF for resonance damping and harmonics compensation in power system

In power system, capacitors are widely used to compensate reactive power, which generally cause resonance problems in harmonic distorted network. In this paper, a method of using a parallel active power filter (PAPF) to damp the resonances is proposed. The proposed method is compound with traditional method, it shows that whether the capacitor current is included in the detecting current of PAPF or not. Also the PAPF with proposed method has strong ability in harmonic compensation. Finally, the experiment results are presented to verify the analysis.