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Technology in Australia 1788-1988Australian Academy of Technological Sciences and Engineering
Table of Contents

Chapter 11

I The Present Energy Economy

II Australian Energy Consumption

III Research And Development

IV Coal

V Oil And Natural Gas

VI Solar Energy

VII Nuclear Energy

VIII Bagasse Firewood And Other Biomass

IX Electric Power Generation And Distribution electric Power Generation And Distribution
i Types of generating stations
ii Transmission and distribution
iii System load control
iv Australian manufacturing in the power industry
v Queensland
vi New South Wales
vii Victoria
viii Tasmania
ix South Australia
x Western Australia
xi Northern Territory
xii Australian Capital Territory
xiii The Snowy Mountains Scheme

X Manufactured Gas

XI Industrial Process Heat



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Transmission and distribution

The multitude of small generating plants that were progressively built has now been largely replaced by a few large plants interconnected with the various load centres by transmission lines operating at voltages up to 500 kV. The transmission lines terminate at 'bulk supply' substations adjacent to load centres, where transformers provide output at the nominated 'sub-transmission' voltage, of 132, 66, 33, 22 or 11 kV.

'Distribution' is the term applied to the process of delivering power at a subtransmission voltage to 'zone sub-stations' and thence to consumers via 'high voltage' lines (usually 22 or 11 kV) to 'distribution sub-stations' for further transformation to 'low voltage' (standard at 415/240 volts) for the consumers service connections.

Organisations in Australian Science at Work - Snowy Mountains Scheme

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© 1988 Print Edition page 824, Online Edition 2000
Published by Australian Science and Technology Heritage Centre, using the Web Academic Resource Publisher