COURSE DESCRIPTION

This course explains, in general terms, how transmission and distribution systems deliver power from a power plant to customers. The course describes the major components of a typical T&D system, how they function, and how electricity flows through these components on its journey from the power plant to customers.

COURSE GOALS

• Describe how transmission and distribution systems generally operate.
• Identify the basic components of a transmission and distribution system and explain their functions.
• Describe the flow path of electricity from a power plant, through a typical T&D system, to the customer.

SUBJECTS AND OBJECTIVES

T&D System Overview

• Explain how power grids help ensure a continuous flow of power to customers.
• State the purpose of a T&D system.
• Describe the major components of a T&D system.

Power Plants

• State the function of a power plant.
• Describe the general characteristics of atypical power plant.

Switchyards

• State the general function of switchyard.
• Describe the major components of a typical switchyard.
• Describe how the electrical flow path through a switchyard can be altered to isolate certain equipment.

Transmission Lines

• Explain the function of transmission lines in a typical T&D system.
• Describe the major components of transmission lines.

Substations

• Explain the function of a substation.
• Describe the components of a typical substation.
• Describe how the electrical flow path through a substation can be altered to isolate certain equipment.

Distribution

• Explain the function of a distribution system.
• Describe the major components of a typical distribution system.
• Explain how electricity travels through a typical distribution system to reach customers.