OT: UPS for FreeBSD
matt at gsicomp.on.ca
Sat Nov 29 21:06:08 UTC 2014
> On 11/29/2014 12:56 PM, Darren Pilgrim wrote:
> > On 11/28/2014 8:12 PM, Erich Dollansky wrote:
> >> Real high voltage transmission
> >> lines using DC make sense.
> > Someone already tried that. It doesn't work. The conductors have to
> > be impractically large to get a useful amount of current, and the
> > distance loss is so high you can't build even a metro grid with it,
> > let alone a regional grid or the long-distance transmission systems we
> > use now.
> That is correct Darren - Long distance transmission, even for a scan few
miles is impractical with DC.
You might be interested to learn that many electrical utilities across the
world use DC transmission systems over hundreds or thousands of kilometers.
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