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Identification of transformer core vibrations and the effect of third harmonic in the electricity grid

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Abstract
In this work, an experimental technique is applied for the measurements of the vibrations and deformation of a test transformer core. Since the grid voltage contains some higher harmonics, in addition to a purely sinusoidal magnetisation of the core the presence of third harmonic is also studied. The vibrations of the transformer core for points as well as the surface scan of the leg show more deformation in the corners of the leg than the middle of the leg. The influence of the higher harmonic of the magnetisation on the core deformation is also more significant in the corners of the leg. The core deformation shape under a sinusoidal magnetisation with a higher harmonic is more wavy and fluctuating than that under a purely sinusoidal magnetisation.
Keywords
transformers, Vibrations and noise, laser vibrometer, harmonics, vibration measurements

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Please use this url to cite or link to this publication:

Chicago
Gorji Ghalamestani, Setareh, Lieven Vandevelde, and Jan Melkebeek. 2014. “Identification of Transformer Core Vibrations and the Effect of Third Harmonic in the Electricity Grid.” International JOURNAL OF ELECTRICAL, COMPUTER, ELECTRONICS AND COMMUNICATION ENGINEERING 8 (6): 871–874.
APA
Gorji Ghalamestani, S., Vandevelde, L., & Melkebeek, J. (2014). Identification of transformer core vibrations and the effect of third harmonic in the electricity grid. International JOURNAL OF ELECTRICAL, COMPUTER, ELECTRONICS AND COMMUNICATION ENGINEERING, 8(6), 871–874.
Vancouver
1.
Gorji Ghalamestani S, Vandevelde L, Melkebeek J. Identification of transformer core vibrations and the effect of third harmonic in the electricity grid. International JOURNAL OF ELECTRICAL, COMPUTER, ELECTRONICS AND COMMUNICATION ENGINEERING. World Academy of Science, Engineering and Technology; 2014;8(6):871–4.
MLA
Gorji Ghalamestani, Setareh, Lieven Vandevelde, and Jan Melkebeek. “Identification of Transformer Core Vibrations and the Effect of Third Harmonic in the Electricity Grid.” International JOURNAL OF ELECTRICAL, COMPUTER, ELECTRONICS AND COMMUNICATION ENGINEERING 8.6 (2014): 871–874. Print.
@article{6837794,
  abstract     = {In this work, an experimental technique is applied for the measurements of the vibrations and deformation of a test transformer core. Since the grid voltage contains some higher harmonics, in addition to a purely sinusoidal magnetisation of the core the presence of third harmonic is also studied. The vibrations of the transformer core for points as well as the surface scan of the leg show more deformation in the corners of the leg than the middle of the leg. The influence of the higher harmonic of the magnetisation on the core deformation is also more significant in the corners of the leg. The core deformation shape under a sinusoidal magnetisation with a higher harmonic is more wavy and fluctuating than that under a purely sinusoidal magnetisation.},
  author       = {Gorji Ghalamestani, Setareh and Vandevelde, Lieven and Melkebeek, Jan},
  issn         = {1307-6892},
  journal      = {International JOURNAL OF ELECTRICAL, COMPUTER, ELECTRONICS AND COMMUNICATION ENGINEERING},
  keywords     = {transformers,Vibrations and noise,laser vibrometer,harmonics,vibration measurements},
  language     = {eng},
  number       = {6},
  pages        = {871--874},
  publisher    = {World Academy of Science, Engineering and Technology},
  title        = {Identification of transformer core vibrations and the effect of third harmonic in the electricity grid},
  url          = {http://waset.org/Publications/identification-of-transformer-core-vibrations-and-the-effect-of-third-harmonic-in-the-electricity-grid/9998518},
  volume       = {8},
  year         = {2014},
}