Description

The introduction explains the basic structure of an electric power distribution system and prepares the reader for mathematical and computer modeling of distribution networks.

1. What is a distribution system?

A distribution system is the part of the electric power system that delivers electrical energy to customers.

The basic path is:

Generating station → Transmission system → Distribution substation → Distribution feeders → Consumers

2. Distribution substations

A distribution substation connects the higher-voltage power system to the local distribution network. It reduces voltage to levels appropriate for distribution feeders and customers.

3. Radial feeders

A radial feeder is a distribution circuit supplied from one source, normally a substation.

Power generally flows: