Electrical Overhead Primary Distribution System

The primary distribution circuit delivers power to various substations called distribution substations.

Electrical overhead primary distribution system.

The main function of an electrical power distribution system is to provide power to individual consumer premises. The secondary distribution employs 400 230 v 3 phase 4 wire system. The most common distribution system consists of simple radial circuits feeders that can be overhead underground or a combination. Electric power distribution is the final stage in the delivery of electric power.

Over long transmission lines. The system of lines and circuits supplying energy to the secondary distribution system at a higher voltage is the primary distribution system. Hello friends welcome in learn eee. From the distribution substation feeders carry the power to the end customers forming the medium voltage or primary network operated at a medium voltage level typically 5 35 kv.

Primary distribution lines carry this medium voltage power to distribution transformers located near the customer s premises. Distribution transformers again lower the. How distribution systems are different than transmission systems 1. An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy across large distances.

Overhead topology e g. Distribution substations connect to the transmission system and lower the transmission voltage to medium voltage ranging between 2 kv and 35 kv with the use of transformers. It consists of one or more uninsulated electrical cables commonly multiples of three for three phase power suspended by towers or poles. Radial loop network sectionalizing options circuit length load density.

Opacity some distribution feeder attributes. Typical electrical distribution system. Since most of the insulation is provided by the surrounding air overhead power lines are generally the least. It carries electricity from the transmission system to individual consumers.

It is that part of ac distribution system which includes the range of voltages at which the ultimate consumer utilizes the electrical energy delivered to him. Energy transmitted at the voltage at which it is used is known as secondary distribution. Overhead electric line construction with details.