Title page for etd-0626106-105628


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URN etd-0626106-105628
Author Feng-chi Su
Author's Email Address mei777.su888@msa.hinet.net
Statistics This thesis had been viewed 4686 times. Download 2059 times.
Department Electrical Engineering
Year 2005
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title An Analysis of the Magnetic Field of Transmission Lines and its Suppression Approaches
Date of Defense 2006-06-13
Page Count 108
Keyword
  • transmission line
  • magnetic field
  • underground
  • near field
  • overhead
  • Abstract This thesis presents a computational analysis of the magnetic field of low-frequency power transmission lines, and the approaches to its suppression. First, according to the structure of Taiwan's three-phase A.C. transmission network, this research calculated the distribution of conducting wires' magnetic field under specific configuration by applying the theories of Near-field effect, Biot Savart's law, and double complex number. Second, this research explored the features of various approaches to magnetic field suppression with magnetic-field vector analyses and Matlab simulations. Finally, two magnetic-field cancellation methods, the “circuit space arrangement” and “time phase permutations” were adopted to investigate their magnetic effects under various structures and combinations of transmission lines. This study reveals that the magnetic field can be effectively suppressed by using appropriate configuration of transmission lines in space and phase. By applying the result to the design and construction of transmission lines, we can meet not only the requirements of magnetic field reduction, but also the needs of the least cost.
    Advisory Committee
  • Fu-sheng Cheng - chair
  • Ta-peng Taso - co-chair
  • Shi-Jaw Chen - co-chair
  • Whei-min Lin - advisor
  • Files
  • etd-0626106-105628.pdf
  • indicate access worldwide
    Date of Submission 2006-06-26

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