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| 1 | Analysis of alternative parameters of dynamic resistance measurement in high voltage circuit breakers显示文摘Throughout its lifetime,high-voltage circuit breaker(HVCB)contacts suffer from inevitable degradation processes,especially during the formation of electric arcs.Highly degraded contacts can reduce the current interruption capacity and increase the chances of operational faults,which might lead to considerable financial losses.Therefore,the use of efficient evaluating techniques is a key factor to achieve systems reliability.The dynamic resistance measurement(DRM)is a technique that can be used to evaluate the degradation level of HVCB'contacts.It stands out from the usual technique,static resistance measurement,by allowing the assessment of both the main contacts and the arcing contacts(ACs).Usually,the mean resistance or the area under the DRM curve is used to estimate the AC degradation.However,DRM is a non-standardised technique and there are no specified parameters to evaluate the real wear conditions.Therefore,an analysis of alternative parameters extractible from the DRM technique is presented in this study,such as amplitude and variance of the DRM curve.The results attest the possible use of more than one parameter for the continuous evaluation of HVCB ACs,characterising the DRM as a more complete and precise diagnosis tool. | Herbet Filipe dos Santos Sousa Adriano Costa de Oliveira George Victor Rocha Xavier Henrique Nunes de Santana Edson Guedes da Costa Tarso Vilela Ferreira | 2019 | High Voltage2019，4，3： | 1 |
| 2 | Rapid manufacturing of metal components by laser forming 显示文摘 | Edson Costa Santos Masanari Shiomi | 2006 | International Journals of Machine Tools and Manufacture2006，46，： | 1 |
| 3 | Rapid manufacturing of metal components by laser forming显示文摘 | Edson Costa Santos | 2006 | International Journal of Machine Tools & Manufacture2006，46，1213： | 1 |
| 4 | Rapid manufacturing of metal components by laser forming显示文摘 | Edson Costa Santos Masanari Shiomi Kozo Osakada et d | 2006 | International Journal of Machine Tools and Manufacture2006，46，1213： | 1 |
| 5 | Rapid Manufacturing of Metal components by laser forming显示文摘 | Edson Costa Santos Masanari Shiomi Kozo Osakada | 2006 | International Journal of MaehineTools& Manufacture2006，46，： | 1 |
| 6 | Rapid manufacturing of metal components by laser forming显示文摘 | Edson Costa Santos Masanari Shiomi Kozo Osakada | 2006 | International Journal of Machine Tools and Manufacture2006，46，1213： | 1 |
| 7 | Rapid manufacturing of metal components by laser forming显示文摘 | Santos Edson Costa Shiomi Masanari Osakada Kozo | 2006 | International Journal of Machine Tools & Manufacture2006，46，： | 1 |
| 8 | Rapid manufacturing of metal components by laser forming 显示文摘 | Edson Costa Santos Masanari Shiomi Kozo Osakada | 2006 | International Journal of Machine Tools and Manufacture2006，46，1213： | 1 |
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