posted on Oct, 3 2012 @ 01:10 PM
reply to post by watchitburn
The problem is a high voltage environment is very harsh. There is few insulating substances that age well when exposed to it. The main four are OIL,
GLASS, CERAMIC, and AIR.
Oil filled HV cables are very reliable. They use them in most large cities for the primary underground transmission and distribution systems. But they
are expensive and do not scale well to field deployed local systems.
So, without oil, what do you have left to work with? Glass, ceramic, and air. Hence the overhead lines that everyone loves to hate.
Even with solar and other power sources, the energy density of the load, and the bad disposition of the weather will require that large sums of power
be moved large distances to move power from the wide open spaces where it’s generated, to the dense population areas where it’s most heavily
consumed. In the world of renewable energy, we will be needing more long distance power lines, not less.