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- 穂積 直裕
- 愛知工業大学電気学科電気工学専攻
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- 内田 克己
- 中部電力(株)電力技術研究所
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- 村上 義信
- 豊橋技術科学大学電気電子工学系
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- 長尾 雅行
- 豊橋技術科学大学電気電子工学系
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- Teyssedre Gilbert
- CNRS, Paul Sabatier University
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- Laurent Christian
- CNRS, Paul Sabatier University
書誌事項
- タイトル別名
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- Study on Space Charge Behavior Related to the Residual Charge Method for Diagnosing Water Tree Degradation of Polymer Insulated Power Cables
- デンリョク ケーブル ノ ミズ トリー レッカ シンダン ノ タメノ ザンリュウ デンカホウ ニ カンレンスル クウカン デンカ キョドウ
この論文をさがす
抄録
The residual charge method is expected to be a powerful tool to detect the water tree degradation of polymer insulated power cables. In this method, DC voltage is firstly applied to electrify the degraded region. Some of the charges would be deeply trapped and stayed stably, even after the DC voltage is removed and the system is short circuited. AC voltage is subsequently applied in order to release the trapped charges. The DC component current, or the integration of it, is considered to have a correlation with the degree of degradation. This paper discusses the detail of the mechanism by which the DC component signal appears. The specimen was carefully prepared so that it contained water trees with uniform length. Space charge measurement was performed by pulsed electroacoustic method. The decay process of charges under AC voltages was interpreted into the energy depth at which the charge had been trapped, assuming that the charges were detrapped by the process of Poole-Frenkel type. It was suggested that the charges trapped between 0.8-1.2 eV can be detected as the DC component current. The shallower would be released by thermal energy at ambient temperature while the system was short circuited. The deeper would not be released by realistic AC voltages. The result showed that the transition of DC component current in the residual charge method represents the behavior of space charges having been trapped at deferent energy levels. It is believed that the results give useful information to apply the method to power cables.
収録刊行物
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- 電気学会論文誌. A
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電気学会論文誌. A 128 (2), 67-74, 2008
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204593358592
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- NII論文ID
- 10021129352
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- NII書誌ID
- AN10136312
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- BIBCODE
- 2008IJTFM.128...67H
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- ISSN
- 13475533
- 03854205
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- NDL書誌ID
- 9361094
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可