Les turbines hydrauliques dans les barrages sont fabriquées en acier inoxydable martensitique. Cet acier contient du Chrome, du Nickel et moins de 0.06% de Carbone. Notre étude se concentrera sur trois types de cet acier avec différente teneur carbone. Afin de ne mettre en valeur que l’effet du carbone, on leur fait subir des traitements thermiques pour avoir la même microstructure. Par la suite on fait des essais de traction et de résilience pour les trois aciers suivie par des mesures fractographique pour expliquer l’effet de carbone sur les propriétés monotone du matériau.
Smart grid (SG) aims at modernizing the current power grid which can better manage the electricity through the grid and react to the system faults quicker. To realize this goal, many sensors are attached to different points of the power grid infrastructure. These sensors collect data and can be used for controlling, protecting, and monitoring the status of the grid by receiving comands from the utility control center. Hence, a two-way communication infrastructure seen to be required for smart grid realization.
The project objective is to design and manufacture ultrasonic sensors capable of operating at temperatures up to 800 oC. Such transducers can be affixed to hot piping systems and pressure vessels in petrochemical plants, electrical power generating stations, and manufacturing plants. These sensors can then provide continuous information to the plant operator regarding the onset of cracks or corrosion in the pipe wall. In addition information related to fluids flowing in the pipe can also be gathered, such as flow rate, fluid temperature, turbulence.
Integration of renewable energy systems into grid is an effective solution to the electric energy shortage and environmental pollution. A number of technical challenges may arise with increased grid-connected renewable energy systems. One of the most important issues is how to achieve the islanding protection. Many anti-islanding detection methods have been reported for single renewable energy systems in the last decades. In practice, however, the multi-unit systems are distributed in different feeders. Consequently, all of the existing methods might fail in this case.
High Voltage DC Transmission (HVDC) is used for bulk power transfer over long distances. Manitoba Hydro system involves collection of AC power in the north where it is converted to DC and then transferred to southern Manitoba (approx 900km) where it is converted back to AC to feed consumers. Recently the problems of inter area oscillations have been reported in the system. Manitoba Hydro uses feedback signals such as frequency from the converter stations as control input to modulate power through HVDC links to damp these oscillations.
The future of energy supply in Ontario is uncertain. We are faced with an aging nuclear fleet and pressure to avoid future energy generation near communities. Building demands are a strain on energy supplies. A solution is to reduce building energy needs while providing sufficient distributed energy generation on a community-scale. A net-zero energy (NZE) community creates as much energy as it requires. The impetus behind this research is a community under development in London, ON, which aims to achieve NZE.
Osmotic power or salinity gradient energy is one type of the renewable energies which is produced by mixing fresh water with salt water. This new environmental friendly energy based on the advantages such as carbon dioxide free and generating power continuously seems to be a good option in which to invest as it will be highly beneficial to Quebec. This project looks to develop expertise related to osmotic power. A pressure retarded osmosis (PRO) power test unit will be designed and installed in Quebec. This will be the first osmotic power system in North America.
BC Hydro purchases power from four independent wind farms in British Columbia to supplement their hydropower. But wind is not steady, so BC Hydro must compensate for shortfalls or excesses in wind power to provide steady, reliable, economical power to its customers. To achieve this reliability, BC Hydro uses wind forecasts provided by the University of British Columbia (UBC). These forecasts are made with computer codes called Numerical Weather Prediction models that describe atmospheric airflow, but each model has a range of options.
The aim of the internship is to develop strategies for commercialization of radical, generic technologies developed by Exro in the area of clean technology. They have developed and patented. a variable input electrical generator that could be very efficiently used in producing electricity for undetermined electricity generation levels from clean tech sources like wind turbine and wave turbines. This internship will apply technology management techniques to inform the commercialization strategy of Exro Technologies.
Over the past several decades, the scope of decision-making in the public domain has changed from a focus on unilateral regulatory verdicts to a more comprehensive process that engages all stakeholders. Consequently, there has been a distinct increase in public participation in the environmental decision-making process. While the potential benefits of public engagement are substantial in terms of identifying synergies between public and industry stakeholders that encourage project development, this participation does not come without its challenges.