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Magnetic nondestructive detection of distribution-line deterioration

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5 Author(s)
Nonaka, Takashi ; Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai, Japan ; Yoshimi, H. ; Sato, Fumihiro ; Matsuki, H.
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A major problem in the electric power industry is distribution-line degradation. Nondestructive detection of cracks in a distribution line may be possible through eddy-current testing or measurement of the magnetic field around the distribution line when it is energized. We have examined each of these methods, eddy-current testing and distribution of the magnetic field around a conducting wire and around a distribution line, through laboratory experiments. Our results indicate that both methods provide an effective means of detecting distribution-line deterioration.

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Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 5 )