Reactance one-port compensator and modular active filter for voltage and current harmonic reduction in nonlinear distribution systems: A comparative study

Harmonic distortion levels in electrical distribution systems have escalate d recently due to the increasing presence of nonlinear and electronically-s witched loads. This paper presents a comparative study between two differen t approaches to cancel harmonic distortion in nonlinear distribution system s. A modular active filter based on linear adaptive neuron (ADALINE) extrac tion technique and a reactance one-port compensator, that is in current res onance with the load, were designed and tested utilizing a secondary distri bution feeder. Both attenuation and diversity effects have been taken into consideration during the design procedure. Filter sensitivity to elements' values deviation and operating point variation were examined. The harmonic analysis was carried out in the time-domain using the EMTDC package. (C) 19 99 Elsevier Science S.A. All rights reserved.