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Topic Title: Voltage Level for Power Distribution
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Created On: 02 May 2013 03:07 AM
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 02 May 2013 03:07 AM
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wave

Posts: 3
Joined: 18 March 2013

How to choose the voltage level for power distribution in urban area?

Except the cost, what is the critical factors for planner to choose 11kV or 22kV voltage level in distribution network?
 03 May 2013 05:05 PM
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Zuiko

Posts: 521
Joined: 14 September 2010

The voltage level will largely depend on the power that is being distributed.

The greater the power, the higher the voltage used. This is due to the efficiency gained at higher voltages; both from a reduction in voltage drop, and power losses (I^2 R losses).

Some back-of-the-envelope calculations will quickly show you what voltage levels are required as the power increases.

It is common to distrubute power around primary grid sites at 33 kV; then at 11 kV to primary substations where it is then distributed at LV to consumers.

Edited: 03 May 2013 at 05:35 PM by Zuiko
 03 May 2013 05:43 PM
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ArthurHall

Posts: 735
Joined: 25 July 2008

The rule of thumb is 1kv per mile rounded off to a standard voltage.
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