Tracking harmonic filter performance using aggregated harmonic phasors

Abstract

Harmonic filter bank performance could be affected by network configuration changes. Assessment of filter performance in a distribution network with different distortion sources and dynamic configuration states is needed for evaluation of contractual obligations on harmonic emission. By using aggregated harmonic phasors and identifying the range of harmonic phase angles where the filter causes secondary cancellation of the harmonic voltage phasor, a practical methodology that track harmonic filter performance is proposed. Application is demonstrated by means of field data.