3.1 INTRODUCTION The transmission system is the electricity “superhighway.” The Role of Transmission Electricity transmission is the process of transporting electricity from often remote areas where it is generated—usually over long distances—to the populated areas where local electricity distribution grids will deliver it to customers. Electricity travels across the transmission grid at high voltages—above 100 kilovolts—for efficiency. Transmission lines typically consist of overhead power lines; however, some comparatively short distances are covered with underground transmission lines, usually within densely populated areas. Transmission can also occur through submarine power cables.
Reference Documents To facilitate your understanding of terminology used in this course, please download the glossary of electrical terms. If you are not using a mouse or touchscreen to navigate the course, please download the keyboard navigation instructions.
Transmission in Canada The transmission system serves as a bridge between where bulk electricity is generated and where it is used. It moves electricity efficiently and safely across long distances and connects provincial, regional, and national grids. It is the generation system that converts mechanical energy to electricity and the distribution system that transports lower-voltage electricity.
The Transmission Grid The electricity grid as a whole is the network through which electricity is generated, transmitted, and distributed. In this module, we will focus on the transmission system, which includes the control centre, transmission towers, and transmission lines.
Electricity Canada | Electricity Fundamental in Canada: Student Handbook
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