Institution
Hydro-Québec
Government•Montreal, Quebec, Canada•
About: Hydro-Québec is a government organization based out in Montreal, Quebec, Canada. It is known for research contribution in the topics: Electric power system & Dielectric. The organization has 2596 authors who have published 4433 publications receiving 100878 citations.
Topics: Electric power system, Dielectric, Electrolyte, Electrode, Lithium
Papers published on a yearly basis
Papers
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Hydro-Québec1, National Research Council2, École de technologie supérieure3, École Normale Supérieure4, Paul Sabatier University5, Delft University of Technology6, University of Southampton7, University of Montpellier8, University of Bologna9, Chalmers University of Technology10, Technische Universität München11, University of Leicester12, University of Genoa13, Laval University14
TL;DR: This text summarizes the keynote presentation that is based on the full-length paper of the “Brainstorm paper”, and a glance at some major accomplishments, hinrances and still remaining questions relative to nanodielectrics.
Abstract: This is an extended abstract. The corresponding conference paper can be accessed at the following Web address: https://lra.le.ac.uk/handle/2381/10000
37 citations
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TL;DR: A convolutional variational autoencoder has been used to help experts to visually select the best training data set in order to improve the performances of the PD source classifier with a minimum of labeled data.
Abstract: Hydrogenerators are strategic assets for power utilities. Their reliability and availability can lead to significant benefits. For decades, monitoring and diagnosis of hydrogenerators have been at the core of maintenance strategies. A significant part of generator diagnosis relies on Partial Discharge (PD) measurements, because the main cause of hydrogenerator breakdown comes from failure of its high voltage stator, which is a major component of hydrogenerators. A study of all stator failure mechanisms reveals that more than 85% of them involve the presence of PD activity. PD signal can be detected from the lead of the hydrogenerator while it is running, thus allowing for on-line diagnosis. Hydro-Quebec has been collecting more than 33 000 unlabeled PD measurement files over the last decades. Up to now, this diagnostic technique has been quantified based on global PD amplitudes and integrated PD energy irrespective of the source of the PD signal. Several PD sources exist and they all have different relative risk, but in order to recognize the nature of the PD, or its source, the judgement of experts is required. In this paper, we propose a new method based on visual data analysis to build a PD source classifier with a minimum of labeled data. A convolutional variational autoencoder has been used to help experts to visually select the best training data set in order to improve the performances of the PD source classifier.
37 citations
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TL;DR: In this article, a photomultiplier was used to scan the high voltage rod simultaneously with current measurement technique, and the basic properties of streamers, namely the onset voltage, leakage current, mean propagation velocity and breakdown voltage, have been measured and compared with propagation from a metal rod as a reference.
Abstract: Electric discharge between the tip of an icicle and a plane electrode has been studied because of its relevance to the flashover of high voltage ice-covered insulators. A photomultiplier was used to scan the high voltage rod simultaneously with current measurement technique. The basic properties of streamers, namely the onset voltage, leakage current, mean propagation velocity and breakdown voltage, have been measured and compared with propagation from a metal rod as a reference. The effects of several experimental parameters such as freezing water conductivity, surrounding temperature and air gap length on the discharge characteristics have been examined. Possible mechanisms, which control discharges from ice points, have also been discussed and empirical relationships to predict breakdown voltage have been derived.
37 citations
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TL;DR: In this article, nano-size non-carbon coated amorphous FePO4·2H2O can be used as the anode for an aqueous sodium-ion battery.
37 citations
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TL;DR: In this paper, the influence of carbon addition on the characteristics of MgNi alloy prepared by mechanical alloying and used as metal hydride electrode has been studied, and the results indicate that carbon addition has a major deleterious effect on the electrode performance, i.e. the initial discharge capacity decreases exponentially from 522 to 332 mA h g −1 with carbon content increasing from 0 to 3.5 wt.
37 citations
Authors
Showing all 2603 results
Name | H-index | Papers | Citations |
---|---|---|---|
John B. Goodenough | 151 | 1064 | 113741 |
Mark Sutton | 128 | 1009 | 78703 |
Pierre Legendre | 98 | 366 | 82995 |
Jackie Y. Ying | 89 | 587 | 35694 |
Karim Zaghib | 69 | 533 | 16785 |
Geza Joos | 67 | 514 | 15880 |
M. V. Reddy | 66 | 254 | 15772 |
Kamal Al-Haddad | 61 | 828 | 21017 |
Jean-Pol Dodelet | 59 | 164 | 18473 |
Taha B. M. J. Ouarda | 58 | 349 | 12230 |
Michael R. Wertheimer | 54 | 320 | 11003 |
Richard Martin | 54 | 339 | 11465 |
Michel Armand | 54 | 152 | 44873 |
Marc Lucotte | 50 | 169 | 8088 |
Abdelbast Guerfi | 49 | 215 | 6739 |