On Apr 7, 2:46*pm, harry wrote:
On Apr 7, 4:34 pm, "Iowna Uass" wrote:

HOWEVER,
I read recently that research into high-voltage transmission was
suggesting that very high voltage DC transmission was more efficient that
AC -- proly due to lack of capacitance/inductive effects et al, or some
other wizardry -- and that with the advent of solid state inverters,
transforming DC to AC would be less problematic, rendering DC transmission
ultimately viable.

MB Hydro uses DC for transmission from generator sites to converter stations
over hundreds of miles.

http://www.hydro.mb.ca/corporate/fac...s_nelson.shtml

There are numerous high voltage DC links in the world including one
lnking the UK with continental Europe. The reason is difficulties in
synchronising the AC systems.

That's not the only reason for DC links. DC transmission losses are
less than AC, as well. For long distances these losses are greater
than the expense of conversion.

The plan was to take advantage of differing peak load times in France
and the UK.