Detection of DC Current and Three—Phase Ground Fault Current Using a Ferromagnetic Pipe

M. Yamaguchi; A. Hayasaka; K. Murakami; H. Hojo

doi:10.1109/TJMJ.1989.4564027

Detection of DC Current and Three—Phase Ground Fault Current Using a Ferromagnetic Pipe

M. Yamaguchi, A. Hayasaka, K. Murakami, H. Hojo

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

Abstract

New methods for detecting DC current and ground fault current in a three-phase power line system are described. Two detectors both utilize the skin effect of conducting current in a ferromagnetic pipe. The detectors have no windings. The DC current detector outputs almost sinusoidal voltage whose amplitude corresponds well to the DC current. The detector has a simplified circuit configuration and short response time. There are no contacts between the DC line and the sense circuit. The ground fault detector breaks down the three-phase power line within three drive-frequency cycles, This paper summarizes those results.

Original language	English
Pages (from-to)	456-463
Number of pages	8
Journal	IEEE Translation Journal on Magnetics in Japan
Volume	4
Issue number	7
DOIs	https://doi.org/10.1109/TJMJ.1989.4564027
Publication status	Published - 1989 Jul

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10.1109/TJMJ.1989.4564027

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abstract = "New methods for detecting DC current and ground fault current in a three-phase power line system are described. Two detectors both utilize the skin effect of conducting current in a ferromagnetic pipe. The detectors have no windings. The DC current detector outputs almost sinusoidal voltage whose amplitude corresponds well to the DC current. The detector has a simplified circuit configuration and short response time. There are no contacts between the DC line and the sense circuit. The ground fault detector breaks down the three-phase power line within three drive-frequency cycles, This paper summarizes those results.",

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AU - Hojo, H.

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AB - New methods for detecting DC current and ground fault current in a three-phase power line system are described. Two detectors both utilize the skin effect of conducting current in a ferromagnetic pipe. The detectors have no windings. The DC current detector outputs almost sinusoidal voltage whose amplitude corresponds well to the DC current. The detector has a simplified circuit configuration and short response time. There are no contacts between the DC line and the sense circuit. The ground fault detector breaks down the three-phase power line within three drive-frequency cycles, This paper summarizes those results.

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Detection of DC Current and Three—Phase Ground Fault Current Using a Ferromagnetic Pipe

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