著者

今給黎 明大 徳永 英明 田邊 隼翔 小迫 雅裕 匹田 政幸

出版者

電気・情報関係学会九州支部連合大会委員会

雑誌

電気関係学会九州支部連合大会講演論文集

巻号頁・発行日

vol.2016, pp.111, 2016

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自動車運搬船は,自動車が積み込まれている収納区間は危険区域とよばれコンセントを設けることができない。また,船内の居住区や船外の電気使用のためのコンセントについても設置スペース確保の問題と潮風による腐食の問題がある。非接触給電は,電力を伝送する際に接点がないため安全であり,金属部が外気に触れない構造を取れるため,腐食の問題も解決できる可能性がある。 本稿では,使用したい場合に自由にコンセントを取り外しできる非接触給電構造を提案し,システムの回路構成と各部動作についてシミュレーションにより検討した。また,船内の高調波規格を満たすため高調波低減方法についても検討したので報告する。

著者

古森 郁尊 西口 法明 匹田 政幸 水谷 照吉

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.113, no.8, pp.586-593, 1993-08-20 (Released:2008-07-15)

参考文献数

12

被引用文献数

1 5

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We have constructed a prototype of partial discharge (PD) pulse measurement and degradation diagnosis expert system (PDM/ES-I) using a personal computer for insulation degradation diagnosis of materials suffering from PDs. For 0.1 mm-thick low density polyethylene (LDPE) with CIGRE Method II electrode system, temporal change of phase-angle-resolved PD pulse occurrence distribution was measured with PDM/ES- I. We applied the so-called "pattern recognition" of the PD pulse distribution to diagnosis of insulation degradation and assessment of residual life. Experimental results revealed that in spite of large scattering of time to breakdown, i. e. life, from 5 to 43 hours, all the tested samples exhibited similar evolution of the profile of PD pulse occurrence distribution with increasing aging time. The PD pattern measured at a given aging time was compared with five standard normalized PD patterns which had been registered in advance as five representative degradation stages from initial degradation category to final one. The degradation stage determined by the pattern recognition (PR) method proved to vary from the initial degradation category to final one in a correct turn. Consequently, the PR method permitted an exact determination of the degree of degradation at a given aging time. In other words, the PR method was capable of predicting the residual life of LDPE with a CM-II electrode system.

著者

匹田 政幸

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌B(電力・エネルギー部門誌) (ISSN:03854213)

巻号頁・発行日

vol.122, no.4, pp.482-485, 2002-04-01 (Released:2008-12-19)

参考文献数

42

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This article deals with trend of sensing, monitoring, diagnostics and maintenance technology in electric power apparatus, especially, gas insulated switchgear (GIS). Partial discharge measurement is one of key technology and the most promising method for developing highly reliable diagnostics for insulation performance of the high voltage apparatus. The review is made by focusing UHF sensors and acoustic method for detecting electromagnetic and ultrasonic waves caused by partial discharges in GIS, respectively.