Electrical Power Distribution By Shaun Bannon

981 Words Jun 22nd, 2015 4 Pages
Electrical Power Distribution
By Shaun Bannon


1.1 Introduction
1.2 Overview
1.3 Hydro Power Stations
1.4 Thermal Power Stations
1.5 Nuclear Power Stations
1.6 Diesel Power Stations
1.7 Bibliography

1.1 Introduction
A power station consists of several generating stations and transmissions and distribution networks interconnect consumers. The purpose of any power system is to generate electrical energy in sufficient quantities at the best-suited locations, to transmit it to various load centres and then distribute to various consumers and to maintain the quality and reliability of transmission at an economic price.

1.2 Overview
Electrical power is normally generated at 11-21kV in a power station. So in order to transmit this power over long distances, the electrical power is stepped up to 132kV, 220kV or 400kV where required. Power transmission is carried through a transmission network of high voltage lines that usually run into hundreds of kilometres and deliver power into a common pool called the “grid”. The grid is connected to load centres through a sub-transmission network of 132kV or 33kV lines that terminate at 33kV substations, this is where the voltage is stepped down to 11kV for distribution of power to load points through distribution network lines at 11kV and lower. The power network from a consumer perspective is generally the distribution network of 11kV lines or feeders, downstream to 33kV substations. Each 11kV than emanates from a 33kV…

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