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Modeling Compact Flourescent Lamps and Investigation of Their Effects from Distribution Point of View

Ghorbani, Mohammad Javad | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41275 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Mokhtari, Hossein
  7. Abstract:
  8. This research presents a new harmonic model for compact fluorescent lamps and other nonlinear loads. In recent years, nonlinear loads have gained widespread acceptance due to their characteristics. Although CFLs consume less energy, they draw extremely distorted current waveforms resulting in harmonic losses in distribution networks. The presented harmonic Norton models in this work are simple and accurate models which can consider the impact of supply voltage harmonics as well. The parameters of non linear appliances model are determined based on measurements. The characteristics of the proposed models make it suitable for analyzing the impacts of large number of CFLs or other non-linear loads on the electric power networks. The models are verified by comparison with the measurement results. This research also presents harmonic models for residential, commercial and office loads. The models are obtained by combining Norton equivalent models of corresponding appliances which are used in each type of load. Based on the developed individual loads, estimation for the harmonic content of a 20 kv/400v feeder is also obtained. Two new indices for power quality deterioration of different appliances are also introduced, and the loads are ranked based on this index. The power loss in a sample power distribution network is estimated, and the share of harmonics in the total loss is also estimated. Finally, the effects of nonlinear load harmonics on a transformer loss and capacity are determined
  9. Keywords:
  10. Power Quality ; Harmonics ; Nonlinear Load ; Harmonic Losses ; Compact Fluorescent Lamp ; Norton Law

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