Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Cho Hiroaki"'
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Hiromasa Yoshizumi, Masayuki Hikita, Masahiro Kozako, Cho Hiroaki, Nakamura Yusuke, Yuuki Fujii
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 139:154-160
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2ff00b391344a501da7fbb6c3b1e81b
https://doi.org/10.1541/ieejfms.139.154
https://doi.org/10.1541/ieejfms.139.154
Publikováno v:
2020 8th International Conference on Condition Monitoring and Diagnosis (CMD).
In this paper, a non-destructive inspection method by using THz waves will be discussed to detect defects in epoxy resin, which is widely used as an insulating material in power equipment. Fundamental data were obtained, such as the absorption rate o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c421f8f91eee159d05ebc93b38582fcb
https://doi.org/10.1109/cmd48350.2020.9287268
https://doi.org/10.1109/cmd48350.2020.9287268
Publikováno v:
Lecture Notes in Electrical Engineering ISBN: 9783030316754
Partial Discharge (PD) is one of the most harmful phenomenon in high voltage electrical equipment. While measurement of PD is widely accepted to examine whether insulation performance of the equipment is deteriorated or not, external noise interferen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ae648160cc768f52271b2afcce9fbbf
https://doi.org/10.1007/978-3-030-31676-1_47
https://doi.org/10.1007/978-3-030-31676-1_47
Autor:
Hiromasa Yoshizumi, Masahiro Kozako, Masayuki Hikita, Cho Hiroaki, Nakamura Yusuke, Yusuke Nakano, Yuuki Fujii
Publikováno v:
2018 Condition Monitoring and Diagnosis (CMD).
Transient earth voltage (TEV) detection method is drawing attention for its readiness to be installed just on the outer wall of existing equipment, and is useful for partial discharge (PD) detection. The purpose of this research is to establish relia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e06cae718df1ed1c58d3d54e316da1b
https://doi.org/10.1109/cmd.2018.8535989
https://doi.org/10.1109/cmd.2018.8535989
Publikováno v:
2017 4th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST).
Partial discharge detection is useful for insulation diagnosis of switchgear. Since a partial discharge can be easily measured by attaching a sensor to a metal casing, we have been studying practical applications of the transient earth voltage (TEV)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2f36e3d819c27cc09997c740c5618a9
https://doi.org/10.1109/icepe-st.2017.8188957
https://doi.org/10.1109/icepe-st.2017.8188957
Autor:
Yuuki Fujii, Masahiro Kozako, Masayuki Hikita, Takaaki Koga, Nakamura Yusuke, Hiromasa Yoshizumi, Cho Hiroaki
Publikováno v:
2017 International Symposium on Electrical Insulating Materials (ISEIM).
This paper deals with advancement of insulation diagnosis technology for high voltage equipment by partial discharge (PD) detection using transient earth voltage (TEV) detection method. Our previous study showed that detected TEV signal contains both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::929aae434d1f81f297caa6a7ad6c35d6
https://doi.org/10.23919/iseim.2017.8166549
https://doi.org/10.23919/iseim.2017.8166549
Publikováno v:
2016 IEEE International Conference on Dielectrics (ICD).
This paper discusses the influence of pressure in a defect on time evolution of Partial discharge (PD) characteristics and lifetime characteristics of an insulation model of a molded transformer. Experimental results show that the time evolution of P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1137de7d9d6a6bf3dd1d3b4a08fa63a
https://doi.org/10.1109/icd.2016.7547713
https://doi.org/10.1109/icd.2016.7547713
Autor:
Takeuchi Miwa, Cho Hiroaki, Takahiro Imai, Hiroki Sekiya, Motofumi Tanaka, Masahiro Asayama, Kenichi Yamazaki, Tamon Ozaki, Toshiki Osako
Publikováno v:
2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.
Nanocomposite techniques are used to improve the electrical properties of epoxy materials, for example, insulation breakdown strength and partial discharge resistance. In the first step, we prepared epoxy-based nanocomposites by using hydrophobic epo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4d80838be18dc5c3026c900738c0773
https://doi.org/10.1109/ceidp.2012.6378776
https://doi.org/10.1109/ceidp.2012.6378776
Autor:
Toshiki Osako, Hiroki Sekiya, Cho Hiroaki, Kenichi Yamazaki, Takahiro Imai, Masahiro Asayama, Tamon Ozaki, Motofumi Tanaka
Publikováno v:
2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98ce1a192727d0ba66056d3c4f76f852
https://doi.org/10.1109/ceidp.2011.6232745
https://doi.org/10.1109/ceidp.2011.6232745