Combined compensation structure of a static Var compensator and an active filter for unbalanced three-phase distribution feeders with harmonic distortion |
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| Affiliation: | 1. Department of Electrical Engineering, Kuang Wu Institute of Technology and Commerce, Yi-Te Street, Peitow-Taipei, 112, Taiwan, ROC;2. Department of Electrical Engineering, National Taiwan University of Science and Technology, PO Box 14-56, Peitow-Taipei, 112, Taiwan, ROC;1. MySpace Lab., Department of Clinical Neurosciences, University Hospital, Lausanne, Switzerland;2. Laboratory of Cognitive Neuroscience, Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Switzerland;3. MindMaze SA, Lausanne, Switzerland;1. Oxford Centre for Computational Neuroscience, Oxford, UK;2. University of Warwick, Department of Computer Science, Coventry, UK;3. Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, CNRS, France;4. University of Lyon, Bron, France;1. Universidade Federal de Uberlândia, Instituto de Química, 38400–902 Uberlândia, MG, Brazil;2. Serviço Distrital de Educação Juventude e Tecnologia, 1202 Macia, Mozambique;1. Division of Vascular and Endovascular Surgery, Department of Surgery, Oregon Health and Science University, Portland, OR;2. Division of Vascular Surgery, Department of Surgery, University of Washington School of Medicine, Seattle, WA;3. Department of Surgery, University of Washington School of Medicine, Seattle, WA;4. Division of Interventional Radiology, University of Washington Department of Radiology, University of Washington School of Medicine, Seattle, WA;5. Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA;1. Mechanical Working Research Section Materials Research Laboratory, KOBE STEEL,LTD.,1 5-5, Takatsukadai, Nishi-ku, Kobe, 651-2271, Japan;2. Research & Development Section Technical Development Department Steel Casing & Forging Division, KOBE STEEL,LTD.,2 3-1, Shinhama, Arai-cho, Takasago, 676-8670, Japan |
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| Abstract: | A combined reactive power compensation method of a static Var compensator (SVC) and an active filter is described in this paper for unbalanced three-phase distribution feeders with harmonic distortion. The SVC acts as a classic reactive power compensator for load balancing and power factor correction. The small rating active filter is used to improve filtering characteristics of the passive filter in SVC and suppress possible resonance between the system impedance and the passive filter. The control signals are derived from the calculation of instantaneous active and reactive powers of the distribution feeder. Simulation results carried out by the electromagnetic transients program (EMTP) show that the proposed reactive power compensation configurations can effectively balance currents, correct power factor, and eliminate harmonic currents. |
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