The Relationship between the Current through the Transformer Neutral Point and Natural Phenomena
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- Izutsu Jun
- Earthquake Prediction Research Center, Tokai University
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- Ochi Takashi
- Electric Power Substrate R&D Department (System), Power Engineering R&D Center, Kansai Electric Power Co., Inc.
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- Uetake Tomiichi
- Seismic Design Group, R&D Center, Tokyo Electric Power Co., Inc.
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- Mutakamihigashi Tatsuya
- Kanden Engineering Co., Inc.
Bibliographic Information
- Other Title
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- Relationship between the Current through the Transformer Neutral Point and Natural Phenomena
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Abstract
The neutral points of the transformers in substations are grounded and connected by the power lines. By measuring the current which flows through the neutral points, the telluric current between substations could be measured. We have monitored this current in order to detect anomalies before and after earthquakes since 1996. Although the neutral current is theoretically zero, it is generated by various factors, such as temperature and geomagnetic changes, and artificial noises. A very large change of the neutral current, unexplainable by these factors, was observed before and after the M3.0 earthquake which occurred under the power lines on September 22, 1999. However, so far, we have never observed any anomalies for other earthquakes.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 126 (4), 233-237, 2006
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204593712384
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- NII Article ID
- 10017541592
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 7910717
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed