scispace - formally typeset
Search or ask a question
Institution

Hydro-Québec

GovernmentMontreal, 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.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a dual-ascent approach for the multicommodity location-allocation problem with balancing requirements is presented, which may be used either to obtain a good heuristic solution, or to compare sharp bounds in a branch-and-bound scheme.
Abstract: The multicommodity location-allocation problem with balancing requirements is related to one of the major logistics issues faced by distribution and transportation firms: the management of the fleet of vehicles over a medium to long-term planning horizon. We present a dual-ascent approach for this formulation which may be used either to obtain a good heuristic solution, or to compare sharp bounds in a branch-and-bound scheme. We present and compare two variants of this approach, and analyze their performances both on a large number of randomly generated problems and on a large-scale application to the strategic/tactical planning of the land operations of an international maritime container shipping firm. Our results demonstrate that a dual-ascent approach is highly effective in this context.

55 citations

Patent
Couture Pierre1
24 May 2002
TL;DR: In this paper, the authors proposed a switching apparatus for a segment of an electric power line having several phase lines, where the conductors of each phase line are short-circuited among them at two extremities of the segment.
Abstract: The switching apparatus is intended to be used with a segment of an electric power line having several phase lines. Each of the phase lines has several conductors electrically insulated one from the other and connected in parallel. The conductors of each phase line are short-circuited among them at two extremities of the segment. The apparatus comprises pairs of switches connected in parallel, for selectively opening and closing the conductors of each phase line, a detecting device for detecting current operating conditions of the segment, and a controlling device for controlling the pairs of switches according to the current operating conditions of the segment. The present invention also relates to a switching method.

55 citations

Journal ArticleDOI
TL;DR: In this article, a method for evaluating the performance of demodulation-based frequency measurement algorithms in the presence of additive interfering sinusoids is presented, where the error induced by a single interfering tone is easily computed using the cascade algorithm's frequency response magnitude.
Abstract: This paper presents a method for evaluating the performance of demodulation-based frequency measurement algorithms in the presence of additive interfering sinusoids. Determination of the performance of amplitude measurement schemes under such conditions is straightforward once the frequency responses of the filters involved in the process are known, since the error induced by a single interfering tone is easily computed using the cascade algorithm's frequency response magnitude. This paper presents a similar method for predicting the worst error of frequency measurement schemes with respect to sinusoidal interference. Once acquainted with the proposed error prediction formula, the only difficulty in designing effective frequency measurement algorithms is the appropriate selection of output filters to achieve the specified performance. The method has been used successfully in designing frequency measurement algorithms currently used in Hydro-Que/spl acute/bec's special protection schemes.

55 citations

Journal ArticleDOI
Ray Bartnikas1
TL;DR: In this paper, the development of various partial-discharge test methods as applied to cables, capacitors transformers, and rotating machines is examined in an historical context, with special emphasis placed on various discharge pulse analysis techniques, although it is pointed out that integrated charge measurements should receive greater attention, in particular as concerns their capability to respond to glow and pseudoglow discharges.
Abstract: The development of the various partial-discharge test methods as applied to cables, capacitors transformers, and rotating machines is examined in an historical context. Special emphasis is placed on various discharge pulse analysis techniques, although it is pointed out that integrated charge measurements should receive greater attention, in particular as concerns their capability to respond to glow and pseudoglow discharges. >

55 citations

Journal ArticleDOI
TL;DR: In this article, a multi-layer perceptron approach has been applied to distinguish between power cable insulation partial discharge pulse shapes that are characteristic of cavities and electrical trees, and the neural network was found to be capable of recognizing the differences in PD pulses produced by single cavity and electrical tree discharge sources.
Abstract: A neural network system, utilizing the multi-layer perceptron approach has been applied to distinguish between power cable insulation partial discharge pulse shapes that are characteristic of cavities and electrical trees. The neural network was found to be capable of recognizing the differences in PD pulses produced by single cavity and electrical tree discharge sources. It also could differentiate between the discharge pulse forms emanating from electrical trees of different lengths; likewise, it was able to recognize changes in the shape of the discharge pulses with time due to aging effects. However, as these recognition capabilities relate only to comparisons of single discharge sources on a one-to-one basis, the application of neural networks to PD pulse shape recognition on actual power cables, where a number of different discharge sources may be discharging simultaneously, is quite premature at this time without more detailed exploratory work on complex discharge patterns. >

55 citations


Authors

Showing all 2603 results

NameH-indexPapersCitations
John B. Goodenough1511064113741
Mark Sutton128100978703
Pierre Legendre9836682995
Jackie Y. Ying8958735694
Karim Zaghib6953316785
Geza Joos6751415880
M. V. Reddy6625415772
Kamal Al-Haddad6182821017
Jean-Pol Dodelet5916418473
Taha B. M. J. Ouarda5834912230
Michael R. Wertheimer5432011003
Richard Martin5433911465
Michel Armand5415244873
Marc Lucotte501698088
Abdelbast Guerfi492156739
Network Information
Related Institutions (5)
Westinghouse Electric
38K papers, 523.3K citations

82% related

École Polytechnique de Montréal
18.3K papers, 494.3K citations

82% related

General Electric
110.5K papers, 1.8M citations

80% related

United States Department of Energy
14.1K papers, 556.9K citations

79% related

Polytechnic University of Milan
58.4K papers, 1.2M citations

79% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
202256
2021115
2020173
2019162
2018156