Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Fumihiro Endo"'
Autor:
Uwe Schichler, S. Meijer, A. Girodet, C. Neumann, J. Pearson, J. Lopez-Roldan, A. Giboulet, Stefan Tenbohlen, Lars E. Lundgaard, Uwe Riechert, W. Koltunowicz, B. Hampton, H.-G Kranz, R. Pietsch, Fumihiro Endo, H. Hama, K. Feser, S. Okabe
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 20:2165-2172
The paper, prepared by CIGRE WG D1.03 (TF 09), presents the guidelines for risk assessment procedure on defects in GIS based on PD diagnostics. The procedure, described in detail in CIGRE Technical Brochure 525, starts with sensitive PD measurement t
Publikováno v:
ResearcherID
The partial discharge - current pulse waveform analyzing (PD-CPWA) system can measure partial discharge (PD) current pulses continuously in high speed, and is being used for the study of PD mechanisms in SF6 gas in a laboratory. On the other hand, th
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 17:1214-1220
From the viewpoints of less flammability and environment protection, a new type of electrical insulating liquid for power transformers is strongly required. Low viscosity silicone liquid (20 cSt) is suitable for the requirements owing to the followin
Publikováno v:
ResearcherID
For accurate detection and diagnosis of Partial Discharges (PDs) in Gas Insulated Switchgears (GISs), there is a need for better understanding of the physical mechanisms for the PD activity. Accordingly, we have been investigating the PD characterist
Autor:
Fumihiro Endo, Hitoshi Okubo, Diaa-Eldin A. Mansour, Naoki Hayakawa, Hiroki Kojima, K. Nishizawa
Publikováno v:
ResearcherID
The partial discharge (PD) measurements are considered as the most important tool for condition monitoring of Gas Insulated Switchgears (GISs). However, if spacer surface is involved in PD activity, charge accumulation process greatly affects the tim
Autor:
Y. Hatta, Fumihiro Endo, A. Yamazaki, T. Nara, Hidenobu Koide, Tomoyuki Hikosaka, Katsumi Kato, Hitoshi Okubo
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 16:1566-1573
For power transformer insulating oil, we focused on palm oil fatty acid ester (PFAE). It has satisfactory insulating performance, excellent cooling ability and superior biodegradability. Recently, investigations for application of PFAE to environment
Publikováno v:
IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP '09). :11-14
Partial Discharge (PD) measurements are very promising for insulation condition monitoring in Gas Insulated Switchgears (GISs). However, for accurate PD detection and diagnosis, there is a need for better understanding of physical mechanisms behind P
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 16:1150-1157
The electrical insulation reliability of solid spacers in gas insulated switchgears (GISs) is an important issue to achieve a safe operation of such equipment. Among different phenomena, charge accumulation represents the most important matter that c
Publikováno v:
IEEE Transactions on Applied Superconductivity. 19(3):1880-1883
We have been developing superconducting fault current limiting transformer (SFCLT) as a superconducting transformer with current limiting function. As the step-5 of the SFCLT project for the up-graded ratings of current and voltage, in this paper, we
Publikováno v:
IEEE Transactions on Applied Superconductivity. 19(3):2036-2039
In this paper, we investigate the thermal runaway characteristics of a BSCCO HTS single pancake coil conduction-cooled with a 4 K-GM cryo-cooler system. We also evaluate the static and dynamic characteristics of the HTS coil by measuring the temporal