Hydro-Québec

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.

Plasma atomization: A new process for the production of fine, spherical powders

Abstract: A new atomization process, plasma atomization (P.A.), has been developed to produce fine, spherical powders. Unlike conventional high-pressure atomizers, PA utilizes multiple nontransferred direct-current arc plasmas to accelerate the atomization gas. In the P.A. process, metal wires are fed into the apex of the multiple plasmas, where they melt and are atomized in a single step. This process offers the unique ability to produce spherical powders of reactive metals with a typical average particle size of 40 μm.

Voltage and lamp flicker issues: should the IEEE adopt the IEC approach?

Abstract: This paper is intended to provide an overview of the IEC flicker measurement and assessment procedures. The IEC procedures are correlated with existing IEEE flicker standards to show the benefits of the IEC methodology. Application issues, such as customer impact assessment, are also discussed. Three case studies, two field tests, and one EMTP analysis are provided to show the correlation of IEC flickermeter output values with documented customer complaints. The case studies also provide areas where modifications to the IEC flicker standards may be necessary when developing a new IEEE flicker standard.

Modeling and closed-loop validation of a new PSS concept, the multi-band PSS

Abstract: This paper describes the characteristics of a new power system stabilizer, the multi-band PSS. Its model, IEEE PSS4B, is presented to explain its basic principles and functions. This Delta-Omega PSS makes use of three distinct working bands to process the whole spectrum of oscillating modes present in power systems. To illustrate the PSS performance, a simple setting technique, specially developed for this PSS, is presented and used to validate the closed-loop performance of the MB-PSS either in stability simulation or field testing conditions. Presented results are for Hydro-Quebec LG2 power plant.

Composite electrode material

Abstract: The invention relates to a composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which comprises co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers.